# Patent

## Title
Organic light-emitting device

## Abstract

An organic light-emitting device includes a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, wherein the organic layer includes at least one first material represented by Formula 1 below, and at least one second material represented by Formula 2 below:

## Background
CROSS-REFERENCE TO RELATED APPLICATION
This application claims priority to and the benefit of Korean Patent Application No. 10-2014-0071076, filed on 11 Jun. 2014, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference.
BACKGROUND
1. Field
One or more embodiments of the present invention relate to organic light-emitting devices.
2. Description of the Related Art
Organic light-emitting devices (OLEDs) are self-emitting devices that can provide multicolored images and have desired characteristics such as wide viewing angles, excellent contrast, quick response time, excellent brightness, low driving voltage, and excellent response speed.
An OLED has a structure including a first electrode disposed on a substrate, and a hole transport region, an emission layer (EML), an electron transport region, and a second electrode sequentially formed on the first electrode. Holes injected from the first electrode move to the EML via the hole transport region, and electrons injected from the second electrode move to the EML via the electron transport region. Thus, excitons are generated when carriers, such as holes and electrons, recombine in the EML. When the excitons drop from an excited state to a ground state, light is emitted.
SUMMARY
One or more aspects according to one or more embodiments of the present invention are directed toward organic light-emitting devices.
Additional aspects will be set forth in part in the description which follows and, in part, will be apparent from the description, or may be learned by practice of the presented embodiments.
According to an embodiment of the present invention, an organic light-emitting device includes a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, wherein the organic layer includes at least one first material represented by Formula 1 below, and at least one second material represented by Formula 2 below:




In Formulae 1 and 2,
X21 is CR21 or a nitrogen atom (N); X22 is CR22 or N; X23 is CR23 or N;
L11 and L21 to L24 are each independently selected from a substituted or unsubstituted C6-C60 arylene group, and a substituted or unsubstituted C1-C60 heteroarylene group;
a11 and a21 to a24 are each independently 0 or 1;
R11, R12 and R24 to R27 are each independently selected from a substituted or unsubstituted C6-C60 aryl group, a substituted or unsubstituted C1-C60 heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, and a substituted or unsubstituted monovalent non-aromatic condensed hetero-polycyclic group;
b11 and b12 are each independently selected from 1, 2, and 3;
R13, R14, R21 to R23, and R28 are each independently selected from hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a substituted or unsubstituted C1-C60 alkyl group, a substituted or unsubstituted. C1-C60 alkoxy group, a substituted or unsubstituted C3-C10 cycloalkyl group, a substituted or unsubstituted C6-C60 aryl group, a substituted or unsubstituted C6-C60 aryloxy group, a substituted or unsubstituted C1-C60 heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic condensed hetero-polycyclic group, and —Si(Q1)(Q2)(Q3);
b13 and b14 are each independently selected from 1, 2, 3, and 4;
b28 is selected from 1, 2, and 3;
at least one substituent of the substituted C6-C60 arylene group, substituted C1-C60 heteroarylene group, substituted C6-C60 aryl group, substituted C1-C60 heteroaryl group, substituted monovalent non-aromatic condensed polycyclic group, substituted monovalent non-aromatic condensed hetero-polycyclic group, substituted C1-C60 alkyl group, substituted C1-C60 alkoxy group, substituted C3-C10 cycloalkyl group, and substituted C6-C60 aryloxy group is selected from:
deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, and a C1-C60 alkoxy group;
a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, and a C1-C60 alkoxy group, each substituted with at least one selected from deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C3-C10 cycloalkyl group, a C2-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C2-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arythio group, a C1-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed hetero-polycyclic group, and —Si(Q11)(Q12)(Q13);
a C3-C10 cycloalkyl group, a C2-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C2-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arythio group, a C1-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic condensed hetero-polycyclic group;
a C3-C10 cycloalkyl group, a C2-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C2-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arythio group, a C1-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic condensed hetero-polycyclic group, each substituted with at least one selected from deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, a C1-C60 alkoxy group, a C3-C10 cycloalkyl group, a C2-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C2-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arythio group, a C1-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed hetero-polycyclic group, and —Si(Q21)(Q22)(Q23); and
—Si(Q31)(Q32)(Q33); wherein,
Q1 to Q3, Q11 to Q13, Q21 to Q23 and Q31 to Q33 are each independently selected from a C1-C60 alkyl group, a C6-C60 aryl group, a C1-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic condensed hetero-polycyclic group.



BRIEF DESCRIPTION OF THE DRAWING
These and/or other aspects will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawing in which the drawing shows a structure of an organic light-emitting device according to an embodiment of the present invention.



DETAILED DESCRIPTION
Reference will now be made in more detail to embodiments, examples of which are illustrated in the accompanying drawing, wherein like reference numerals refer to like elements throughout and repetitive descriptions thereof are omitted herein. In this regard, the present embodiments may have different forms and should not be construed as being limited to the descriptions set forth herein. Accordingly, the embodiments are merely described below, by referring to the FIGURE, to explain aspects of the present description. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items. Expressions such as “at least one of,” when preceding a list of elements, modify the entire list of elements and do not modify the individual elements of the list.
As the invention allows for various changes and numerous embodiments, example embodiments will be illustrated in the drawing and described in detail in the written description. The effects and properties of the present invention and methods of achieving the same will become clear with reference to the drawing and the embodiments described below. However, the present invention is not limited to the example embodiments set forth herein and may have various forms.
The terms used in the present specification are merely used to describe example embodiments, and are not intended to limit the present invention. An expression used in the singular encompasses the expression of the plural, unless it has a clearly different meaning in the context.
In the present specification, it is to be understood that the terms such as “including”, “having”, and “comprising” are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof disclosed in the specification, and are not intended to preclude the possibility that one or more other features, numbers, steps, actions, components, parts, or combinations thereof may exist or may be added.
It will be understood that when a layer, region, or component is referred to as being “formed on” another layer, region, or component, it can be directly or indirectly formed on the other layer, region, or component. That is, for example, intervening layers, regions, or components may be present.
Sizes of components in the drawing may be exaggerated for convenience of explanation. In other words, since sizes and thicknesses of components in the drawing are arbitrarily illustrated for convenience of explanation, the following embodiments are not limited thereto.
As used herein, the expression an “(organic layer) includes at least one first material (represented by Formula 1)” may be construed as an “(organic layer) may include one first material (represented by Formula 1), or two or more different first materials (represented by Formula 1)”.
As used herein, the expression, the “organic layer” is a term that refers to a single layer or a multi-layer disposed between the first electrode and the second electrode in the organic light-emitting device. Materials included in the “organic layer” are not limited to organic materials.
A substrate may be additionally disposed under the first electrode 110 or on the second electrode 190 in the drawing. The substrate may be a glass substrate or a transparent plastic substrate with excellent mechanical strength, thermal stability, transparency, surface smoothness, ease of handling, and water resistance.
The first electrode 110 may be formed by, for example, depositing or sputtering a material for the first electrode 110 on the substrate. When the first electrode 110 is an anode, the material for the first electrode 110 may be selected from materials with a high work function to enable ease of hole injection. The first electrode 110 may be a reflective electrode, a semi-transmission electrode, or a transmission electrode. The material for forming the first electrode 110 may be a transparent material with high conductivity, and examples of such a material are indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO2), and zinc oxide (ZnO). To manufacture the first electrode 110, which is a semi-transmission electrode or a transmission electrode, at least one of magnesium (Mg), aluminum (Al), aluminum-lithium (Al—Li), calcium (Ca), magnesium-indium (Mg—In), magnesium-silver (Mg—Ag), and the like may be used (utilized).
The first electrode 110 may have a single-layer structure or a multi-layer structure. For example, the first electrode 110 may have a three-layered structure of ITO/Ag/ITO, but is not limited thereto.
The organic layer 150 may be disposed on the first electrode 110. The organic layer 150 includes an EML.
The organic layer 150 may include at least one first material represented by Formula 1 below, and at least one second material represented by Formula 2 below:




In Formulae 1 and 2,
X21 is CR21 or a nitrogen atom (N); X22 is CR22 or N; and X23 is CR23 or N;
L11, and L21 to L24 are each independently selected from a substituted or unsubstituted C6-C60 arylene group and a substituted or unsubstituted C1-C60 heteroarylene group;
a11, and a21 to a24 are each independently 0 or 1;
R11, R12, and R24 to R27 are each independently selected from a substituted or unsubstituted C6-C60 aryl group, a substituted or unsubstituted C1-C60 heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, and a substituted or unsubstituted monovalent non-aromatic condensed hetero-polycyclic group;
b11 and b12 are each independently selected from 1, 2, and 3;
R13, R14, R21 to R23, and R28 are each independently selected from hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a substituted or unsubstituted C1-C60 alkyl group, a substituted or unsubstituted C1-C60 alkoxy group, a substituted or unsubstituted C3-C10 cycloalkyl group, a substituted or unsubstituted C6-C60 aryl group, a substituted or unsubstituted C6-C60 aryloxy group, a substituted or unsubstituted C1-C60 heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic condensed hetero-polycyclic group, and —Si(Q1)(Q2)(Q3);
b13 and b14 are each independently selected from 1, 2, 3, and 4;
b28 is selected from 1, 2, and 3;
at least one substituent of the substituted C6-C60 arylene group, substituted C1-C60 heteroarylene group, substituted C6-C60 aryl group, substituted C1-C60 heteroaryl group, substituted monovalent non-aromatic condensed polycyclic group, substituted monovalent non-aromatic condensed hetero-polycyclic group, substituted C1-C60 alkyl group, substituted C1-C60 alkoxy group, substituted C3-C10 cycloalkyl group, and substituted C6-C60 aryloxy group may be selected from:
deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, and a C1-C60 alkoxy group;
a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, and a C1-C60 alkoxy group, each substituted with at least one selected from deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C3-C10 cycloalkyl group, a C2-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C2-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arythio group, a C1-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed hetero-polycyclic group, and —Si(Q11)(Q12)(Q13);
a C3-C10 cycloalkyl group, a C2-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C2-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arythio group, a C1-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic condensed hetero-polycyclic group;
a C3-C10 cycloalkyl group, a C2-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C2-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arythio group, a C1-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic condensed hetero-polycyclic group, each substituted with at least one selected from deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, a C1-C60 alkoxy group, a C3-C10 cycloalkyl group, a C2-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C2-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arythio group, a C1-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed hetero-polycyclic group, and —Si(Q21)(Q22)(Q23); and
—Si(Q31)(Q32)(Q33); wherein
Q1 to Q3, Q11 to Q13, Q21 to Q23 and Q31 to Q33 are each independently selected from a C1-C60 alkyl group, a C6-C60 aryl group, a C1-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic condensed hetero-polycyclic group.
For example, in Formula 2, at least one of X21, X22 and X23 may be N. In another embodiment, in Formula 2, X21 may be CR21, X22 may be CR22, and X23 may be N. In another embodiment, in Formula 2, X21 may be N, X22 may be N, and X23 may be CR23. In another embodiment, in Formula 2, X21 may be N, X22 may be N, and X23 may be N.
For example, in Formulae 1 and 2, L11, L21 to L24 are each independently selected from a phenylene group, a naphthylene group, a phenanthrenylene group, an anthracenylene group, a triphenylenylene group, a pyrenylene group, a chrysenylene group, a pyrrolylene group, a thiophenylene group, a furanylene group, an imidazolylene group, a pyridinylene group, a pyrazinylene group, a pyrimidinylene group, a pyridazinylene group, an indolylene group, a quinolinylene group, an isoquinolinylene group, a benzoquinolinylene group, a phenanthridinylene group, an acridinylene group, a phenanthrolinylene group, a benzofuranylene group, a benzothiophenylene group, a triazolylene group, a tetrazolylene group, a triazinylene group, a dibenzofuranylene group, and a dibenzothiophenylene group; and
a phenylene group, a naphthylene group, a phenanthrenylene group, an anthracenylene group, a triphenylenylene group, a pyrenylene group, a chrysenylene group, a pyrrolylene group, a thiophenylene group, a furanylene group, an imidazolylene group, a pyridinylene group, a pyrazinylene group, a pyrimidinylene group, a pyridazinylene group, an indolylene group, a quinolinylene group, an isoquinolinylene group, a benzoquinolinylene group, a phenanthridinylene group, an acridinylene group, a phenanthrolinylene group, a benzofuranylene group, a benzothiophenylene group, a triazolylene group, a tetrazolylene group, a triazinylene group, a dibenzofuranylene group, and a dibenzothiophenylene group, each substituted with at least one selected from deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C20 alkyl group, a C1-C20 alkoxy group, a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclopentenyl group, a cyclohexenyl group, a phenyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, a heptalenyl group, an indacenyl group, an acenaphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group, a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenyl group, a rubicenyl group, a coronenyl group, an ovalenyl group, a pyrrolyl group, a thiophenyl group, a furanyl group, an imidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, an indazolyl group, a purinyl group, a quinolinyl group, an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a carbazolyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolyl group, a dibenzocarbazolyl group, a thiadiazolyl group, and an imidazopyridinyl group, but they are not limited thereto.
In another embodiment, in Formulae 1 and 2, L11, and L21 to L24 are each independently selected from a phenylene group, a naphthylene group, a pyridinylene group, a quinolinylene group, and an isoquinolinylene group; and
a phenylene group, a naphthylene group, a pyridinylene group, a quinolinylene group, and an isoquinolinylene group, each substituted with at least one selected from deuterium, —F, —Cl, —Br, —I, a cyano group, a nitro group, a C1-C20 alkyl group, a phenyl group, and a naphthyl group, but they are not limited thereto.
In another embodiment, in Formulae 1 and 2, L11, and L21 to L24 may be each independently groups selected from Formulae 3-1 to 3-6 below, but they are not limited thereto:




In Formulae 3-1 to 3-6,
* and *′ are each a binding site to a neighboring atom.
In Formula 1, a11 represents the number of L11s and when a11 is 0, (L11)a11 may represent a direct bonding.
In Formula 1, a21 represents the number of L21s and when a21 is 0, (L21)a21 may represent a direct bonding.
In Formula 1, a22 represents the number of L22s and when a22 is 0, (L22)a22 may represent a direct bonding.
In Formula 1, a23 represents the number of L23s and when a23 is 0, (L23)a23 may represent a direct bonding.
In Formula 1, a24 represents the number of L24s and when a24 is 0, (L24)a24 may represent a direct bonding.
For example, in Formulae 1 and 2, R11, R12 and R24 to R27 may be each independently selected from a phenyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, a heptalenyl group, an indacenyl group, an acenaphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group, a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenyl group, a rubicenyl group, a coronenyl group, an ovalenyl group, a pyrrolyl group, a thiophenyl group, a furanyl group, an imidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, an indazolyl group, a purinyl group, a quinolinyl group, an isoquinolinyl group, a carbazolyl group, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, a benzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzosilolyl group, a benzocarbazolyl group, and a dibenzocarbazolyl group; and
a phenyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, a heptalenyl group, an indacenyl group, an acenaphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group, a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenyl group, a rubicenyl group, a coronenyl group, an ovalenyl group, a pyrrolyl group, a thiophenyl group, a furanyl group, an imidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, an indazolyl group, a purinyl group, a quinolinyl group, an isoquinolinyl group, a carbazolyl group, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, a benzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzosilolyl group, a benzocarbazolyl group, and a dibenzocarbazolyl group, each substituted with at least one selected from deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C20 alkyl group, a C1-C20 alkoxy group, a phenyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, a heptalenyl group, an indacenyl group, an acenaphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group, a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenyl group, a rubicenyl group, a coronenyl group, an ovalenyl group, a pyrrolyl group, a thiophenyl group, a furanyl group, an imidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, an indazolyl group, a purinyl group, a quinolinyl group, an isoquinolinyl group, a carbazolyl group, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a carbazolyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, a benzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolyl group, and a dibenzocarbazolyl group.
In another embodiment, in Formulae 1 and 2, R11, R12 and R24 to R27 may be each independently selected from a phenyl group, a naphthyl group, a fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a pyrrolyl group, a thiophenyl group, a furanyl group, an imidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, an indazolyl group, a quinolinyl group, an isoquinolinyl group, a carbazolyl group, a benzoquinolinyl group, a phthalazinyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, a benzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzosilolyl group, a benzocarbazolyl group, and a dibenzocarbazolyl group; and
a phenyl group, a naphthyl group, a fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a pyrrolyl group, a thiophenyl group, a furanyl group, an imidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, an indazolyl group, a quinolinyl group, an isoquinolinyl group, a carbazolyl group, a benzoquinolinyl group, a phthalazinyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, a benzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzosilolyl group, a benzocarbazolyl group, and a dibenzocarbazolyl group, each substituted with at least one selected from deuterium, —F, —Cl, —Br, —I, a cyano group, a nitro group, a C1-C20 alkyl group, a phenyl group, a naphthyl group, a pyridinyl group, a quinolinyl group, and an isoquinolinyl group.
In another embodiment, in Formulae 1 and 2, R11, R12 and R24 to R27 may be each independently selected from a phenyl group, a naphthyl group, a fluorenyl group, a pyridinyl group, a quinolinyl group, and an isoquinolinyl group; and
a phenyl group, a naphthyl group, a fluorenyl group, a pyridinyl group, a quinolinyl group, and an isoquinolinyl group, each substituted with at least one selected from deuterium, —F, —Cl, —Br, —I, a cyano group, a nitro group, a C1-C20 alkyl group, a phenyl group, a naphthyl group, a pyridinyl group, a quinolinyl group, and an isoquinolinyl group.
In another embodiment, in Formula 1, R11 and R12 may be each independently groups selected from Formulae 4-1 to 4-5, 4-23, and 4-24 below, but they are not limited thereto:




In Formulae 4-1 to 4-5, 4-23, and 4-24,
* is a binding site to a neighboring atom.
In another embodiment, in Formula 2, R24 to R27 may be each independently groups selected from Formulae 4-1 to 4-3 and 4-6 to 4-30 below, but they are not limited thereto:













In Formulae 4-1 to 4-3 and 4-6 to 4-30,
* is a binding site to a neighboring atom.
In Formulae 1 and 2, b11 and b12 may respectively represent the number of R11 and R12, and when b11 and/or b12 is 2 or 3, a plurality of R11 and/or R12 may be the same as or different from each other.
For example, in Formulae 1 and 2, R13, R14, R21 to R23, and R28 may be each independently selected from hydrogen, deuterium, —F, —Cl, —Br, —I, a cyano group, a nitro group, a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, a sec-butyl group, an iso-butyl group, a tert-butyl group, an n-pentyl group, an n-hexyl group, an n-heptyl group, an n-octyl group, a phenyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, a heptalenyl group, an indacenyl group, an acenaphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group, a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenyl group, a rubicenyl group, a coronenyl group, an ovalenyl group, a pyrrolyl group, a thiophenyl group, a furanyl group, an imidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, an indazolyl group, a purinyl group, a quinolinyl group, an isoquinolinyl group, a carbazolyl group, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, a benzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzosilolyl group, a benzocarbazolyl group, and a dibenzocarbazolyl group, but they are not limited thereto.
In another embodiment, in Formulae 1 and 2, R13, R14, R21 to R23, and R28 may be each independently selected from hydrogen, deuterium, —F, —Cl, —Br, —I, a cyano group, a nitro group, a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, a sec-butyl group, an iso-butyl group, a tert-butyl group, an n-pentyl group, an n-hexyl group, an n-heptyl group, an n-octyl group, and groups represented by Formulae 4-1 to 4-30 below, but they are not limited thereto:













In Formulae 4-1 to 4-30,
* is a binding site to a neighboring atom.
In Formulae 1 and 2, b13 and b14 may respectively represent the number of R13 and R14, and when b13 and/or b14 is selected from 2, 3, and 4, a plurality of R13 and/or R14 may be the same as or different from each other.
For example, the first material may be represented by any one of Formulae 1A and 1B, and the second material may be represented by any one of Formulae 2A to 2C, but they are not limited thereto:







In Formulae 1A, 1B, 2A, 2B, and 2C,
L11, a11, R11 to R14, b11 to b14, L21 to L24, a21 to a24, and R21 to R27 are the same as described below.
In another embodiment, the first material may be represented by any one of Formulae 1A-1, 1A-2, 1B-1, and 1B-2 below, and the second material may be represented by any one of Formulae 2A to 2C below, but they are not limited thereto:







In Formula 1A-1, 1A-2, 1B-1, 1B-2, 2A, 2B and 2C,
R11 to R14, b13, b14, L21 to L24, a21 to a24, and R21 to R27 are the same as described above.
In another embodiment, the first material may be represented by any one of Formulae 1A-1, 1A-2, 1B-1, and 1B-2 below, and the second material may be represented by any one of Formulae 2A-1 to 2C-1 below, but they are not limited thereto:







In Formula 1A-1, 1A-2, 1B-1, 1B-2, 2A-1, 2B-1, and 2C-1 above,
R11 to R14, b13, b14, and R24 to R27 may be the same as described above.
In another embodiment, the first material may be selected from Compounds 100 to 201, and the second material may be selected from Compounds 300 to 544, but they are not limited thereto:




































































































































































































































































































































Generally, an anthracene-based compound having a symmetrical structure and high crystallinity is known to have low film formability. However, the first material represented by Formula 1 above has an asymmetrical structure and thus, film formability of the first material may be improved. The first material represented by Formula 1 may have a bulky substituent having greater steric hindrance than a phenyl group at the tenth carbon of anthracene, which leads to reduced association with a dopant, and thus, efficiency and lifespan of an organic light-emitting device may be improved.
The second material represented by Formula 2 may have great electron transporting ability.
Accordingly, an organic light-emitting device including the first material and the second material may have high efficiency and a long lifespan.
The organic layer 150 may further include a hole transport region 130 disposed between the first electrode 110 and the EML. The organic layer 150 may further include an electron transport region disposed between the EML and the second electrode.
The hole transport region may include at least one selected from a hole injection layer (HIL), a hole transport layer (HTL), a buffer layer, and an electron blocking layer (EBL); and the electron transport region may include at last one selected from a hole blocking layer (HBL), an electron transport layer (ETL), and an electron injection layer (EIL), but each of the hole transport region and the electron transport region is not limited thereto.
The hole transport region may include a single layer formed of a single material, a single layer formed of a plurality of different materials, or a multi-layered structure including a plurality of layers formed of a plurality of different materials.
For example, the hole transport region may have a single-layered structure formed of a plurality of different materials or a structure in which HIL/HTL, HIL/HTL/buffer layer, HIL/buffer layer, HTL/buffer layer, or HIL/HTL/EBL are sequentially layered on the first electrode 110, but it is not limited thereto.
When the hole transport region includes the HIL, the HIL may be formed on the first electrode 110 by using (utilizing) various suitable methods, such as vacuum deposition, spin coating, casting, Langmuir-Blodgett (LB) deposition, inkjet printing, laser printing, or laser-induced thermal imaging (LITI).
When the HIL is formed by using (utilizing) vacuum deposition, vacuum deposition conditions may vary according to the compound that is used (utilized) to form the HIL and the desired structure of the HIL to be formed. For example, vacuum deposition may be performed at a temperature of about 100° C. to about 500° C., a pressure of about 10−8 torr to about 10−3 torr, and a deposition rate of about 0.01 to about 100 Å/sec, depending on the s
When the HIL is formed by using (utilizing) spin coating, the coating conditions may vary according to the compound that is used (utilized) to form the HIL and the desired structure of the HIL to be formed. For example, the coating rate may be in the range of about 2000 rpm to about 5000 rpm, and a temperature at which a heat treatment is performed may be in the range of about 80° C. to about 200° C.
When the hole transport region includes the HTL, the HTL may be formed on the first electrode 110 or on the HIL by using (utilizing) various suitable methods, such as vacuum deposition, spin coating, casting, LB deposition, inkjet printing, laser printing, or LITI. When the HTL is formed by vacuum deposition or spin coating, the vacuum deposition conditions and coating conditions may be the same as the vacuum deposition conditions and the coating conditions of the HIL.
The hole transport region may include at least one selected from m-MTDATA, TDATA, 2-TNATA, NPB, β-NPB, TPD, Spiro-TPD, Spiro-NPB, α-NPB, TAPC, HMTPD, 4,4′,4′′-tris(N-carbazolyl)triphenylamine(4,4′,4′′-tris(N-carbazolyl)triphenylamine) (TCTA), polyaniline/dodecylbenzenesulfonic acid (Pani/DBSA), Poly(3,4-ethylenedioxythiophene)/Poly(4-styrenesulfonate) (PEDOT/PSS), polyaniline/camphor sulfonic acid (pani/CSA), or (polyaniline)/poly(4-styrenesulfonate) (PANI/PSS), a compound represented by Formula 201 below, and a compound represented by Formula 202 below.










In Formulae 201 and 202,
L201 to L205 may be each independently selected from a substituted or unsubstituted C3-C10 cycloalkylene, a substituted or unsubstituted C3-C10 heterocycloalkylene, a substituted or unsubstituted C3-C10 cycloalkenylene, a substituted or unsubstituted C3-C10 heterocycloalkenylene, a substituted or unsubstituted C6-C60 arylene, a substituted or unsubstituted C2-C60 heteroarylene, a substituted or unsubstituted divalent non-aromatic condensed polycyclic group, and a substituted or unsubstituted divalent non-aromatic hetero-condensed polycyclic group;
at least one substituent of the substituted C3-C10 cycloalkylene, substituted C3-C10 heterocycloalkylene, substituted C3-C10 cycloalkenylene, substituted C3-C10 heterocycloalkenylene, substituted C6-C60 arylene, substituted C2-C60 heteroarylene, substituted divalent non-aromatic condensed polycyclic group, and substituted divalent non-aromatic hetero-condensed polycyclic group may be selected from:
deuterium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, and a C1-C60 alkoxy group;
a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, and a C1-C60 alkoxy group, each substituted with at least one selected from a deuterium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C3-C10 cycloalkyl group, a C3-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C3-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arylthio group, a C2-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed hetero-polycyclic group, —N(Q201)(Q202), —Si(Q203)(Q204)(Q205), and —B(Q206)(Q207);
a C3-C10 cycloalkyl group, a C3-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C3-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arylthio group, a C2-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic condensed hetero-polycyclic group;
a C3-C10 cycloalkyl group, a C3-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C3-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C50 aryloxy group, a C6-C60 arylthio group, a C2-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic condensed hetero-polycyclic group, each substituted with at least one selected from a deuterium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, a C1-C60 alkoxy group, a C3-C10 cycloalkyl group, a C3-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C3-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arylthio group, a C2-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed hetero-polycyclic group, —N(Q211)(Q212), —Si(Q213)(Q214)(Q215), and —B(Q216)(Q217); and
—N(Q221)(Q222), —Si(Q223)(Q224)(Q225), and —B(Q226)(Q227);
xa1 to xa4 may be each independently selected from 0, 1, 2, and 3;
xa5 may be selected from 1, 2, 3, 4, and 5;
R201 to R204 may be each independently selected from a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, and a C1-C60 alkoxy group;
a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, and a C1-C60 alkoxy group, each substituted with at least one selected from a deuterium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C3-C10 cycloalkyl group, a C3-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C3-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arylthio group, a C2-C60 heteroaryl group, a non-aromatic condensed polycyclic group, —N(Q231)(Q232), —Si(Q233)(Q234)(Q235), and —B(Q236)(Q237);
a C3-C10 cycloalkyl group, a C3-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C3-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C50 aryloxy group, a C6-C60 arylthio group, a C2-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic condensed hetero-polycyclic group; and
a C3-C10 cycloalkyl group, a C3-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C3-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arylthio group, a C2-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic condensed hetero-polycyclic group, each substituted with at least one selected from a deuterium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, a C1-C60 alkoxy group, a C3-C10 cycloalkyl group, a C3-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C3-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arylthio group, a C2-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed hetero-polycyclic group, —N(Q241)(Q242), —Si(Q243)(Q244)(Q245), and —B(Q246)(Q247); wherein,
Q201 to Q207, Q211 to Q217, Q221 to Q227, Q231 to Q237, and Q241 to Q247 may be each independently selected from:
hydrogen, deuterium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, and a C1-C60 alkoxy group;
a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, and a C1-C60 alkoxy group, each substituted with at least one selected from a deuterium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C3-C10 cycloalkyl group, a C3-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C3-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arylthio group, a C2-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic condensed hetero-polycyclic group;
C3-C10 cycloalkyl group, a C3-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C3-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arylthio group, a C2-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic condensed hetero-polycyclic group; and
a C3-C10 cycloalkyl group, a C3-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C3-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arylthio group, a C2-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic condensed hetero-polycyclic group, each substituted with at least one selected from a deuterium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, a C1-C60 alkoxy group, a C3-C10 cycloalkyl group, a C3-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C3-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C50 aryloxy group, a C6-C60 arylthio group, a C2-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic condensed hetero-polycyclic group.
For example, in Formulae 201 and 202,
L201 to L205 may be each independently selected from:
a phenylene group, a naphthylenylene group, a fluorenylene group, a spiro-fluorenylene group, a benzofluorenylene group, a dibenzofluorenylene group, a phenanthrenylene group, an anthracenylene group, a pyrenylene group, a chrysenylene group, a pyridinylene group, a pyrazinylene group, a pyrimidinylene group, a pyridazinylene group, a quinolinylene group, an isoquinolinylene group, a quinoxalinylene group, a quinazolinylene group, a carbazolylene group, and a triazinylene group; and
a phenylene group, a naphthylenylene group, a fluorenylene group, a spiro-fluorenylene group, a benzofluorenylene group, a dibenzofluorenylene group, a phenanthrenylene group, an anthracenylene group, a pyrenylene group, a chrysenylene group, a pyridinylene group, a pyrazinylene group, a pyrimidinylene group, a pyridazinylene group, a quinolinylene group, an isoquinolinylene group, a quinoxalinylene group, a quinazolinylene group, a carbazolylene group, and a triazinylene group, each substituted with at least one selected from a deuterium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C20 alkyl group, a C1-C20 alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and a triazinyl group;
xa1 to xa4 may be each independently 0, 1, or 2;
xa5 may be 1, 2, or 3;
R201 to R205 may be each independently selected from a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and a triazinyl group; and
a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and a triazinyl group, each substituted with at least one selected from a deuterium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C20 alkyl group, a C1-C20 alkoxy group, a phenyl group, a naphthyl group, an azulenyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and a triazinyl group.
The compound represented by Formula 201 above may be represented by Formula 201A below:




For example, the compound represented by Formula 201 may be represented by Formula 201A-1 below, but it is not limited thereto:




The compound represented by Formula 202 above may be represented by Formula 202A below, but it is not limited thereto:




In Formulae 201A, 201A-1 and 202A, descriptions of L201 to L203; xa1 to xa3, xa5, and R202 to R204 may be the same as the descriptions herein; R211 and R212 may be understood by referring to R203; and R213 to R216 may be each independently selected from hydrogen, deuterium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, a C1-C60 alkoxy group, a C3-C10 cycloalkyl group, a C3-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C3-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arylthio group, a C2-C60 heteroaryl group, and a non-aromatic condensed polycyclic group.
For example, in Formulae 201A, 201A-1, and 202A above,
L201 to L203 may be each independently selected from a phenylene group, a naphthylenylene group, a fluorenylene group, a spiro-fluorenylene group, a benzofluorenylene group, a dibenzofluorenylene group, a phenanthrenylene group, an anthracenylene group, a pyrenylene group, a chrysenylene group, a pyridinylene group, a pyrazinylene group, a pyrimidinylene group, a pyridazinylene group, a quinolinylene group, an isoquinolinylene group, a quinoxalinylene group, a quinazolinylene group, a carbazolylene group, and a triazinylene group; and
a phenylene group, a naphthylenylene group, a fluorenylene group, a spiro-fluorenylene group, a benzofluorenylene group, a dibenzofluorenylene group, a phenanthrenylene group, an anthracenylene group, a pyrenylene group, a chrysenylene group, a pyridinylene group, a pyrazinylene group, a pyrimidinylene group, a pyridazinylene group, a quinolinylene group, an isoquinolinylene group, a quinoxalinylene group, a quinazolinylene group, a carbazolylene group, and a triazinylene group, each substituted with at least one selected from a deuterium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C20 alkyl group, a C1-C20 alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and a triazinyl group;
xa1 to xa3 may be each independently 0 or 1;
R203, R211 and R212 may be each independently selected from a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and a triazinyl group; and
a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a chrysenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and a triazinyl group, each substituted with at least one selected from a deuterium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C20 alkyl group, a C1-C20 alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and a triazinyl group;
R213 and R214 may be each independently selected from a C1-C20 alkyl group, and a C1-C20 alkoxy group;
a C1-C20 alkyl group, and a C1-C20 alkoxy group, each substituted with at least one selected from a deuterium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and a triazinyl group;
a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and a triazinyl group; and
a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and a triazinyl group, each substituted with at least one selected from a deuterium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C20 alkyl group, a C1-C20 alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and a triazinyl group;
R215 and R216 may be each independently selected from a hydrogen, a deuterium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid, group or a salt thereof,
a C1-C20 alkyl group, and a C1-C20 alkoxy group;
a C1-C20 alkyl group, and a C1-C20 alkoxy group, each substituted with at least one selected from a deuterium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and a triazinyl group;
a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, and a triazinyl group; and
a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and a triazinyl group, each substituted with at least one selected from a deuterium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C20 alkyl group, a C1-C20 alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and a triazinyl group; and
xa5 is 1 or 2.
In Formulae 201A and 201A-1, R213 and R214 may bind to each other to form a saturated ring or an unsaturated ring.
The compound represented by Formula 201 above and the compound represented by Formula 202 above may include Compounds HT1 to HT20, but they are not limited thereto.



















A thickness of the hole transport region may be about 100 Å to about 10000 Å, for example, about 100 Å to about 1000 Å. When the hole transport region includes both of the HIL and the HTL, a thickness of the HIL may be about 100 Å to about 10000 Å, for example, about 100 Å to about 1000 Å, and a thickness of the HTL may be about 50 Å to about 2000 Å, for example, about 100 Å to about 1500 Å. In one embodiment, when the thicknesses of the hole transport region, the HIL, and the HTL satisfy the ranges described above, satisfactory hole injection characteristics are obtained without a substantial increase in a driving voltage.
The hole transport region may further include a charge-generating material, in addition to the material described above. The charge-generating material may be uniformly or non-uniformly dispersed in the hole transport region.
The charge-generating material may be, for example, a p-dopant. The p-dopant may be selected from quinone derivatives, metal oxides, and CN-containing compounds, but it is not limited thereto. For example, non-limiting examples of the p-dopant are quinone derivatives (such as tetracyanoquinodimethane (TCNQ), or 2,3,5,6-tetrafluoro-tetracyano-1,4-benzoquinodimethane (F4-TCNQ)); metal oxides (such as tungsten oxides or molybdenym oxides); and Compound HT-D1 below.




The hole transport region may include at least one selected from the buffer layer and the EBL, in addition to the HIL and the HTL. The buffer layer may compensate for an optical resonance distance of light according to a wavelength of the light emitted from the emission layer (EML), and thus may increase the efficiency of light emission. The buffer layer may include any suitable material that may be used (utilized) in the hole transport region. The EBL may reduce or prevent the injection of electrons from the electron transport region.
Then, the EML may be formed on the first electrode 110 or the hole transport region by vacuum deposition, spin coating, casting, LB deposition, inkjet printing, laser printing, LITI, or the like. When the EML is formed using (utilizing) vacuum deposition or spin coating, the deposition and coating conditions may be similar to those for the formation of the HIL.
When the organic light-emitting device 10 is a full color organic light-emitting device, the organic light-emitting device 10 may be patterned into red EML, green EML, and blue EML, according to different EMLs and individual sub-pixels. Alternatively, the EML may have a structure in which the red EML, the green EML, and the blue EML are layered, or a structure in which a red light emission material, a green light emission material, and a blue light emission material are mixed without separation of layers and emit white light. Alternatively, the EML is a white light EML, which includes a color filter or a color converting layer that converts white light into light of desired color.
The EML may include a host and a dopant.
The EML may include the at least one first material represented by Formula 1 above. For example, the host may include the at least one first material represented by Formula 1 above.
When the EML includes the at least one first material represented by Formula 1 above, the ETL may include the at least one second material represented by Formula 2 above, but each of the EML and ETL is not limited thereto. When the EML includes the at least one first material represented by Formula 1 and the ETL includes the at least one second material represented by Formula 2, the EML and the ETL may be adjacent to each other.
The dopant may be at least one of a fluorescent dopant and a phosphorescent dopant.
The fluorescent dopant may include a compound represented by Formula 501 below:




In Formula 501,
Ar501 may be selected from a naphthalene group, a heptalene group, a fluorene group, a spiro-fluorene group, a benzofluorene group, a dibenzofluorene group, a phenalene group, a phenanthrene group, an anthracene group, a fluoranthene group, a triphenylene group, a pyrene group, a chrysene group, a naphthacene group, a picene group, a perylene group, a pentaphene group, and an indenoanthracene group;
a naphthalene group, a heptalene group, a fluorene group, a spiro-fluorene group, a benzofluorene group, a dibenzofluorene group, a phenalene group, a phenanthrene group, an anthracene group, a fluoranthene group, a triphenylene group, a pyrene group, a chrysene group, a naphthacene group, a picene group, a perylene group, a pentaphene group, and an indenoanthracene group, each substituted with at least one selected from deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, a C1-C60 alkoxy group, a C3-C10 cycloalkyl group, a C3-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C3-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arylthio group, a C2-C50 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed hetero-polycyclic group, and —Si(Q501)(Q502)(Q503) (wherein Q501 to Q503 may be each independently selected from a hydrogen, a C1-C60 alkyl group, a C2-C60 alkenyl group, a C6-C60 aryl group, and a C2-C60 heteroaryl group);
descriptions of L501 to L503 may be understood by referring to the description of L201 above;
R501 and R502 may be each independently selected from a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, carbazole, a triazinyl group, a dibenzofuranyl group, and a dibenzothiophenyl group; and
a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, a triazinyl group, and a dibenzofuranyl group, and a dibenzothiophenyl group, each substituted with at least one selected from a deuterium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C20 alkyl group, a C1-C20 alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, a triazinyl group, a dibenzofuranyl group, and a dibenzothiophenyl group;
xd1 to xd3 may be each independently selected from 0, 1, 2, and 3;
xd4 may be selected from 1, 2, 3, and 4.
The fluorescent dopant may include at least one selected from Compounds FD1 to FD8:










In the EML, an amount of the dopant may generally be about 0.01 parts by weight to about 15 parts by weight based on 100 parts by weight of the host, but it is not limited thereto.
A thickness of the EML may be about 100 Å to about 1000 Å, for example, about 200 Å to about 600 Å. In one embodiment, when the thickness of the EML is in the range described above, the EML has excellent light-emitting ability without a substantial increase in driving voltage.
The electron transport region may be disposed on the EML.
The electron transport region may include at least one of the HBL, the ETL, and the EIL, but it is not limited thereto.
For example, the electron transport region may have a structure in which the ETL, the ETL/EIL, or the HBL/ETL/EIL is sequentially layered on the EML, but it is not limited thereto.
The electron transport region may include an HBL. When the EML includes a phosphorescent dopant, the HBL may be formed to reduce or prevent diffusion of triplet excitons or holes into the ETL.
The HBL may include the at least one first material represented by Formula 1. When the hole blocking layer includes the at least one first material represented by Formula 1, the ETL may include the at least one second material represented by Formula 2, but it is not limited thereto. When the HBL includes the at least one first material represented by Formula 1 and the ETL includes the at least one second material represented by Formula 2, the HBL and the ETL may be adjacent to each other.
When the electron transport region includes the HBL, the HBL may be formed on the EML by using (utilizing) various suitable methods such as vacuum deposition, spin coating, casting, LB, inkjet printing, laser printing, or LITI. When the HBL is formed by vacuum deposition or spin coating, the deposition and coating conditions may be similar to those for forming the HIL, though the deposition and coating conditions may vary according to a compound that is used (utilized) to form the HBL.
The HBL may include, for example, the at least one second material represented by Formula 2 above.
A thickness of the HBL may be from about 20 Å to about 1,000 Å, and in some embodiments, may be from about 30 Å to about 300 Å. In one embodiment, when the thickness of the HBL is within these ranges, the HBL has a hole blocking transporting ability without a substantial increase in driving voltage. The electron transport region may include an ETL. The ETL may be formed on the EML or the HBL by using (utilizing) various suitable methods such as vacuum deposition, spin coating, casting, LB, inkjet printing, laser printing, or LITI. When the ETL is formed by vacuum deposition or spin coating, the deposition and coating conditions may be similar to those for forming the HIL, though the deposition and coating conditions may vary according to a compound that is used (utilized) to form the ETL.
The ETL may include at least one selected from the second material represented by Formula 2 above, BCP and Bphen above, and Alq3, Balq, TAZ, and NTAZ below, and a compound represented by Formula 601 below.




In Formula 601,
Ar601 is at least one selected from a naphthalene group, a heptalene group, a fluorene group, a spiro-fluorene group, a benzofluorene group, a dibenzofluorene group, a phenalene group, a phenanthrene group, an anthracene group, a fluoranthene group, a triphenylene group, a pyrene group, a chrysene group, a naphthacene group, a picene group, a perylene group, a pentaphene group, and an indenoanthracene group;
a naphthalene group, a heptalene group, a fluorene group, a spiro-fluorene group, a benzofluorene group, a dibenzofluorene group, a phenalene group, a phenanthrene group, an anthracene group, a fluoranthene group, a triphenylene group, a pyrene group, a chrysene group, a naphthacene group, a picene group, a perylene group, a pentaphene group, and an indenoanthracene group, each substituted with at least one selected from deuterium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, a C1-C60 alkoxy group, a C3-C10 cycloalkyl group, a C3-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C3-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arylthio group, a C2-C60 heteroaryl group, a non-aromatic condensed polycyclic group, and —Si(Q301)(Q302)(Q303) (wherein, Q301 to Q303 may be each independently selected from hydrogen, a C1-C50 alkyl group, a C2-C60 alkenyl group, a C6-C60 aryl group, and a C2-C60 heteroaryl group);
description of L601 may be the same as and understood by referring to the description of L201 above;
E601 may be selected from a pyrrolyl group, a thiophenyl group, a furanyl group, an imidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, an indazolyl group, a purinyl group, a quinolinyl group, an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, a naphthridinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a carbazolyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolyl group, and a dibenzocarbazolyl group; and
a pyrrolyl group, a thiophenyl group, a furanyl group, an imidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, an indazolyl group, a purinyl group, a quinolinyl group, an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, a naphthridinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a carbazolyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolyl group, and a dibenzocarbazolyl group, each substituted with at least one selected from a deuterium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C20 alkyl group, a C1-C20 alkoxy group, a phenyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, a heptalenyl group, an indacenyl group, an acenaphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group, a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenyl group, a rubicenyl group, a coroneryl group, an ovalenyl group, a pyrrolyl group, a thiophenyl group, a furanyl group, an imidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, an indazolyl group, a purinyl group, a quinolinyl group, an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, a naphthridinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a carbazolyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolyl group, and a dibenzocarbazolyl group;
xe1 may be selected from 0, 1, 2, and 3; and
xe2 may be selected from 1, 2, 3, and 4.
Alternatively, the ETL may include at least one second material represented by Formula 2 above and/or at least one compound represented by Formula 602 below:




In Formula 602 above,
X611 may be N or C-(L611)xe611-R611; X612 may be N or C-(L612)xe612-R612; X613 may be N or C-(L613)xe613-R613, and at least one of X611 to X613 may be N;
description for each of L611 to L616 may be understood by referring to the description of L201 herein;
R611 to R616 may be each independently selected from a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and a triazinyl group; and
a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and a triazinyl group, each substituted with at least one selected from a deuterium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C20 alkyl group, a C1-C20 alkoxy group, a phenyl group, a naphthyl group, an azulenyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and a triazinyl group; and
xe611 to xe616 may be each independently selected from 0, 1, 2, and 3.
The compound represented by Formula 601 and the compound represented by Formula 602 above may include at least one selected from Compounds ET1 to ET15.
















A thickness of the ETL may be about 100 Å to about 1000 Å, for example, about 150 Å to about 500 Å. In one embodiment, when the thickness of the ETL is within the range described above, the ETL has satisfactory electron transport characteristics without a substantial increase in driving voltage.
The ETL may further include a metal-containing material in addition to the material described above.
The metal-containing material may include a Li complex. The Li complex may, for example, include compounds ET-D1 (lithium quinolate: LiQ) or ET-D2 illustrated below.




The electron transport region may include an EIL that facilitates electron injection from the second electrode 190.
The EIL may be formed on the ETL by using (utilizing) various suitable methods such as vacuum deposition, spin coating, casting, LB, inkjet printing, laser printing, or LITI. When the EIL is formed by vacuum deposition or spin coating, the deposition and coating conditions may be similar to those for forming the HIL. When the EIL is formed using (utilizing) vacuum deposition or spin coating, the deposition and coating conditions may be similar to those for the formation of the HIL.
The EIL may include at least one selected from LiF, NaCl, CsF, Li2O, BaO, and LiQ.
A thickness of the EIL may be about 1 Å to about 100 Å, or about 3 Å to about 90 Å. In one embodiment, when the thickness of the EIL is within the range described above, satisfactory electron injection characteristics are obtained without a substantial increase in driving voltage.
The second electrode 190 is disposed on the organic layer 150 described above. The second electrode 190 may be a cathode, which is an electron injection electrode, in which a material of the second electrode 190 may be a metal, an alloy, an electroconductive compound, or a mixture thereof having a low work function. Detailed examples of the material of the second electrode 190 include lithium (Li), magnesium (Mg), aluminum (Al), aluminum-lithium (Al—Li), calcium (Ca), magnesium-indium (Mg—In), and magnesium-silver (Mg—Ag). Alternatively, ITO, IZO, or the like may be used (utilized) as the material of the second electrode 190. The second electrode 190 may be a reflective electrode, a semi-transmission electrode, or a transmission electrode.
Hereinabove, the organic light-emitting device is described with reference to the drawing, but it is not limited thereto.
As used herein, the C1-C60 alkyl group refers to a linear or branched aliphatic C1-C60 hydrocarbon monovalent group, and detailed examples thereof include a methyl group, an ethyl group, a propyl group, an isobutyl group, a sec-butyl group, a tert-butyl group, a pentyl group, an iso-amyl group, and a hexyl group. As used herein, the C1-C60 alkylene group refers to a divalent group having the same structure as the C1-C60 alkyl group.
As used herein, the C1-C60 alkoxy group is a monovalent group having a formula of —OA101 (wherein, A101 is the C1-C60 alkyl group) and detailed examples thereof include a methoxy group, an ethoxy group, and an isopropyloxy group.
As used herein, the C2-C60 alkenyl group refers to a C2-C60 alkyl group having one or more carbon-carbon double bonds at a center or end thereof. Examples of the unsubstituted C2-C60 alkenyl group are an ethenyl group, a propenyl group, and a butenyl group. As used herein, the C2-C60 alkenylene group refers to a divalent group having the same structure as the C2-C60 alkenyl group.
As used herein, the C2-C60 alkynyl group refers to an unsubstituted C2-C60 alkyl group having one or more carbon-carbon triple bonds at a center or end thereof. Examples of the C2-C60 alkynyl group are an ethynyl group, a propynyl group, and the like. As used herein, the C2-C60 alkynylene group refers to a divalent group having the same structure as the C2-C60 alkynyl group.
As used herein, the C3-C10 cycloalkyl group refers to a C3-C10 monovalent hydrocarbon monocyclic group, and detailed examples thereof include a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, and a cycloheptyl group. As used herein, the C3-C10 cycloalkylene group refers to a divalent group having the same structure as the C3-C10 cycloalkyl group.
As used herein, the C2-C10 heterocycloalkyl group refers to a C2-C10 monovalent monocyclic group including at least one selected from N, O, P, and S as a ring-forming atom, and detailed examples thereof include a tetrahydrofuranyl group and a tetrahydrothiophenyl group. As used herein, the C2-C10 heterocycloalkylene group refers to a divalent group having the same structure as the C2-C10 heterocycloalkyl group.
As used herein, the C3-C10 cycloalkenyl group refers to a C3-C10 monovalent monocyclic group having at least one double bond in a ring but without aromaticity, and detailed examples thereof include a cyclopentenyl group, a cyclohexenyl group, and a cycloheptenyl group. As used herein, the C3-C10 cycloalkenylene group refers to a divalent group having the same structure as the C3-C10 cycloalkenyl group.
As used herein, the C2-C10 heterocycloalkenyl group refers to a C2-C10 monovalent monocyclic group including at least one selected from N, O, P, and S as a ring-forming atom, and includes at least one double bond in the ring. Detailed examples of the C2-C10 heterocycloalkenyl group include a 2,3-hydrofuranyl group and a 2,3-hydrothiophenyl group. As used herein, the C2-C10 heterocycloalkenylene group refers to a divalent group having the same structure as the C2-C10 heterocycloalkenyl group.
As used herein, the C6-C60 aryl group refers to a C6-C60 monovalent group having a carbocyclic aromatic system, and the C6-C60 arylene group refers to a divalent group having a C6-C60 carbocyclic aromatic system. Examples of the C6-C60 aryl group include a phenyl group, a naphthyl group, an anthracenyl group, a phenanthrenyl group, a pyrenyl group, and a chrysenyl group. When the C6-C60 aryl group and the C6-C60 arylene group include two or more rings, the two or more rings may be fused to each other.
As used herein, the C2-C60 heteroaryl group refers to a monovalent group having a C2-C60 carbocyclic aromatic system including at least one heteroatom selected from N, O, P, and S as a ring-forming atom, and the C2-C60 heteroarylene group refers to a divalent group having a C2-C60 carbocyclic aromatic system including at least one heteroatom selected from N, O, P, and S as a ring-forming atom. Examples of the C2-C60 heteroaryl group include a pyridinyl group, a pyrimidinyl group, a pyrazinyl group, a pyridazinyl group, a triazinyl group, a quinolinyl group, and an isoquinolinyl group. When the C2-C60 heteroaryl group and the C2-C60 heteroarylene group include two or more rings, the two or more rings may be fused to each other.
As used herein, the C6-C60 aryloxy group refers to a group represented by —OA102 (wherein, A102 is the C6-C60 aryl group), and the C6-C60 arythio group refers to a group represented by —SA103 (wherein, A103 is the C6-C60 aryl group).
As used herein, the monovalent non-aromatic condensed polycyclic group refers to a monovalent group having two or more rings that are fused to each other, including only carbon as a ring forming atom (for example, carbon number may be 8 to 60), wherein the entire molecule does not have aromacity. Examples of the non-aromatic condensed polycyclic group include a fluorenyl group and the like. As used herein, the divalent non-aromatic condensed polycyclic group may refer to a divalent group having the same structure as the monovalent non-aromatic condensed polycyclic group.
As used herein, the monovalent non-aromatic hetero-condensed polycyclic group refers to a monovalent group having two or more rings that are fused to each other, including a heteroatom selected from N, O, P, and S as a ring-forming atom, in addition to carbon (for example, carbon number may be 2 to 60), wherein the entire molecule does not have aromaticity. Examples of the monovalent non-aromatic hetero-condensed polycyclic group includes a carbazolyl group and the like. As used herein, the divalent non-aromatic hetero-condensed polycyclic group refers to a divalent group having the same structure as the monovalent non-aromatic hetero-condensed polycyclic group.
As used herein, the term “Ph” refers to a phenyl group, the term “Me” refers to a methyl group, the term “Et” refers to an ethyl group, and the term “ter-Bu” or “But” refers to a tert-butyl group.
EXAMPLES













Example 1
As an anode, a 15 Ω/cm2 ITO glass substrate (1200 Å, Corning) was cut into a size of about 50 mm×50 mm×0.7 mm, ultrasonically washed with isopropyl alcohol for 5 minutes and pure water for 5 minutes, irradiated with UV for 30 minutes, exposed to ozone, and then loaded onto a vacuum deposition device.
HT13 was deposited on the anode to form an HIL having a thickness of 500 Å, HT3 was deposited thereon as a hole-transporting compound to form an HTL having a thickness of 450 Å. Thereafter, Compound 100A and FD1 were co-deposited at a weight ratio of 95:5 to form an EML having a thickness of 300 Å.
Thereafter, Compound 200B was deposited on the EML as an ETL into a thickness of 250 Å, LiF, which is a halogenated alkaline metal, was deposited as an EIL on the ETL into a thickness of 10 Å, and then Al was vacuum deposited into a thickness of 1500 Å (a negative electrode) to manufacture an organic light-emitting device.
Example 2
An organic light-emitting device was manufactured in the same manner as in Example 1, except that when forming an ETL, Compound 201B was used (utilized) instead of Compound 200B.
Example 3
An organic light-emitting device was manufactured in the same manner as in Example 1, except that when forming an ETL, Compound 202B was used (utilized) instead of Compound 200B.
Example 4
An organic light-emitting device was manufactured in the same manner as in Example 1, except that when forming an ETL, Compound 203B was used (utilized) instead of Compound 200B.
Example 5
An organic light-emitting device was manufactured in the same manner as in Example 1, except that when forming an ETL, Compound 204B was used (utilized) instead of Compound 200B.
Example 6
An organic light-emitting device was manufactured in the same manner as in Example 1, except that when forming an ETL, Compound 205B was used (utilized) instead of Compound 200B.
Example 7
An organic light-emitting device was manufactured in the same manner as in Example 1, except that when forming an ETL, Compound 206B was used (utilized) instead of Compound 200B.
Example 8
An organic light-emitting device was manufactured in the same manner as in Example 1, except that when forming an ETL, Compound 207B was used (utilized) instead of Compound 200B.
Example 9
An organic light-emitting device was manufactured in the same manner as in Example 1, except that when forming an ETL, Compound 208B was used (utilized) instead of Compound 200B.
Example 10
An organic light-emitting device was manufactured in the same manner as in Example 1, except that Compound 101A was used (utilized) instead of Compound 100A when forming an EML, and Compound 205B was used (utilized) instead of Compound 200B when forming an ETL.
Example 11
An organic light-emitting device was manufactured in the same manner as in Example 1, except that Compound 102A was used (utilized) instead of Compound 100A when forming an EML, and Compound 205B was used (utilized) instead of Compound 200B when forming an ETL.
Example 12
An organic light-emitting device was manufactured in the same manner as in Example 1, except that Compound 103A was used (utilized) instead of Compound 100A when forming an EML, and Compound 205B was used (utilized) instead of Compound 200B when forming an ETL.
Example 13
An organic light-emitting device was manufactured in the same manner as in Example 1, except that Compound 104A was used (utilized) instead of Compound 100A when forming an EML, and Compound 205B was used (utilized) instead of Compound 200B when forming an ETL.
Example 14
An organic light-emitting device was manufactured in the same manner as in Example 1, except that Compound 105A was used (utilized) instead of Compound 100A when forming an EML, and Compound 205B was used (utilized) instead of Compound 200B when forming an ETL.
Example 15
An organic light-emitting device was manufactured in the same manner as in Example 1, except that Compound 106A was used (utilized) instead of Compound 100A when forming an EML, and Compound 205B was used (utilized) instead of Compound 200B when forming an ETL.
Example 16
An organic light-emitting device was manufactured in the same manner as in Example 1, except that Compound 107A was used (utilized) instead of Compound 100A when forming an EML, and Compound 205B was used (utilized) instead of Compound 200B when forming an ETL.
Example 17
An organic light-emitting device was manufactured in the same manner as in Example 1, except that Compound 108A was used (utilized) instead of Compound 100A when forming an EML, and Compound 205B was used (utilized) instead of Compound 200B when forming an ETL.
Comparative Example 1
An organic light-emitting device was manufactured in the same manner as in Example 1, except that Compound H1 below was used (utilized) instead of Compound 100A when forming an EML, and Compound 205B was used (utilized) instead of Compound 200B when forming an ETL.




Comparative Example 2
An organic light-emitting device was manufactured in the same manner as in Example 1, except that Compound H2 below was used (utilized) instead of Compound 100A when forming an EML, and Compound 205B was used (utilized) instead of Compound 200B when forming an ETL.




Example 18
As an anode, a 15 Ω/cm2 ITO glass substrate (1200 Å, Corning) was cut into a size of about 50 mm×50 mm×0.7 mm, ultrasonically washed with isopropyl alcohol for 5 minutes and pure water for 5 minutes, irradiated with UV for 30 minutes, exposed to ozone, and then loaded onto a vacuum deposition device.
HT13 was deposited on the anode to form an HIL having a thickness of 500 Å, HT3 was deposited thereon as a hole-transporting compound to form an HTL having a thickness of 450 Å. Thereafter, Compound 100A and FD1 were co-deposited at a weight ratio of 95:5 to form an EML having a thickness of 300 Å.
Thereafter, Compound 200B and Liq were deposited at a weight ratio of 50:50 on the EML as an ETL into a thickness of 250 Å, LiF, which is a halogenated alkaline metal, was deposited as an EIL on the ETL into a thickness of 10 Å, and then Al was vacuum deposited into a thickness of 1500 Å (a negative electrode) to manufacture an organic light-emitting device.
Example 19
An organic light-emitting device was manufactured in the same manner as in Example 18, except that Compound 201B was used (utilized) instead of Compound 200B when forming an ETL.
Example 20
An organic light-emitting device was manufactured in the same manner as in Example 18, except that Compound 202B was used (utilized) instead of Compound 200B when forming an ETL.
Example 21
An organic light-emitting device was manufactured in the same manner as in Example 18, except that Compound 203B was used (utilized) instead of Compound 200B when forming an ETL.
Example 22
An organic light-emitting device was manufactured in the same manner as in Example 18, except that Compound 204B was used (utilized) instead of Compound 200B when forming an ETL.
Example 23
An organic light-emitting device was manufactured in the same manner as in Example 18, except that Compound 205B was used (utilized) instead of Compound 200B when forming an ETL.
Example 24
An organic light-emitting device was manufactured in the same manner as in Example 18, except that Compound 206B was used (utilized) instead of Compound 200B when forming an ETL.
Example 25
An organic light-emitting device was manufactured in the same manner as in Example 18, except that Compound 207B was used (utilized) instead of Compound 200B when forming an ETL.
Example 26
An organic light-emitting device was manufactured in the same manner as in Example 18, except that Compound 208B was used (utilized) instead of Compound 200B when forming an ETL.
Comparative Example 3
An organic light-emitting device was manufactured in the same manner as in Example 18, except that Compound H1 below was used (utilized) instead of Compound 100A when forming an EML, and Compound 201B was used (utilized) instead of Compound 200B when forming an ETL.




Comparative Example 4
An organic light-emitting device was manufactured in the same manner as in Example 18, except that Compound H2 below was used (utilized) instead of Compound 100A when forming an EML, and Compound 201B was used (utilized) instead of Compound 200B when forming an ETL.




Example 27
As an anode, a 15 Ω/cm2 ITO glass substrate (1200 Å, Corning) was cut into a size of about 50 mm×50 mm×0.7 mm, ultrasonically washed with isopropyl alcohol for 5 minutes and pure water for 5 minutes, irradiated with UV for 30 minutes, exposed to ozone, and then loaded onto a vacuum deposition device.
HT13 was deposited on the anode to form an HIL having a thickness of 500 Å, HT3 was deposited thereon as a hole-transporting compound to form an HTL having a thickness of 450 Å. Thereafter, Compound 100A and FD1 were co-deposited at a weight ratio of 95:5 to form an EML having a thickness of 300 Å.
Thereafter, Compound 200B was deposited as an HBL on the EML into a thickness of 100 Å, Bphen and Liq were deposited at a weight ratio of 50:50 on the EML as an ETL into a thickness of 150 Å, LiF, which is a halogenated alkaline metal, was deposited as an EIL on the ETL into a thickness of 10 Å, and then Al was vacuum deposited thereon into a thickness of 1500 Å (a negative electrode) to manufacture an organic light-emitting device.
Example 28
An organic light-emitting device was manufactured in the same manner as in Example 27, except that Compound 201B was used (utilized) instead of Compound 200B when forming an ETL.
Example 29
An organic light-emitting device was manufactured in the same manner as in Example 27, except that Compound 202B was used (utilized) instead of Compound 200B when forming an ETL.
Example 30
An organic light-emitting device was manufactured in the same manner as in Example 27, except that Compound 203B was used (utilized) instead of Compound 200B when forming an ETL.
Example 31
An organic light-emitting device was manufactured in the same manner as in Example 27, except that Compound 204B was used (utilized) instead of Compound 200B when forming an ETL.
Example 32
An organic light-emitting device was manufactured in the same manner as in Example 27, except that Compound 205B was used (utilized) instead of Compound 200B when forming an ETL.
Example 33
An organic light-emitting device was manufactured in the same manner as in Example 27, except that Compound 206B was used (utilized) instead of Compound 200B when forming an ETL.
Example 34
An organic light-emitting device was manufactured in the same manner as in Example 27, except that Compound 207B was used (utilized) instead of Compound 200B when forming an ETL.
Example 35
An organic light-emitting device was manufactured in the same manner as in Example 27, except that Compound 208B was used (utilized) instead of Compound 200B when forming an ETL.
Example 36
An organic light-emitting device was manufactured in the same manner as in Example 27, except that Compound 101A was used (utilized) instead of Compound 100A when forming an EML, and Compound 205B was used (utilized) instead of Compound 200B when forming an ETL.
Example 37
An organic light-emitting device was manufactured in the same manner as in Example 27, except that Compound 102A was used (utilized) instead of Compound 100A when forming an EML, and Compound 205B was used (utilized) instead of Compound 200B when forming an ETL.
Example 38
An organic light-emitting device was manufactured in the same manner as in Example 27, except that Compound 103A was used (utilized) instead of Compound 100A when forming an EML, and Compound 205B was used (utilized) instead of Compound 200B when forming an ETL.
Example 39
An organic light-emitting device was manufactured in the same manner as in Example 27, except that Compound 104A was used (utilized) instead of Compound 100A when forming an EML, and Compound 205B was used (utilized) instead of Compound 200B when forming an ETL.
Example 40
An organic light-emitting device was manufactured in the same manner as in Example 27, except that Compound 105A was used (utilized) instead of Compound 100A when forming an EML, and Compound 205B was used (utilized) instead of Compound 200B when forming an ETL.
Example 41
An organic light-emitting device was manufactured in the same manner as in Example 27, except that Compound 106A was used (utilized) instead of Compound 100A when forming an EML, and Compound 205B was used (utilized) instead of Compound 200B when forming an ETL.
Example 42
An organic light-emitting device was manufactured in the same manner as in Example 27, except that Compound 107A was used (utilized) instead of Compound 100A when forming an EML, and Compound 205B was used (utilized) instead of Compound 200B when forming an ETL.
Example 43
An organic light-emitting device was manufactured in the same manner as in Example 27, except that Compound 108A was used (utilized) instead of Compound 100A when forming an EML, and Compound 205B was used (utilized) instead of Compound 200B when forming an ETL.
Comparative Example 5
An organic light-emitting device was manufactured in the same manner as in Example 27, except that Compound H1 below was used (utilized) instead of Compound 100A when forming an EML, and Compound 205B was used (utilized) instead of Compound 200B when forming an ETL.




Comparative Example 6
An organic light-emitting device was manufactured in the same manner as in Example 27, except that Compound H2 below was used (utilized) instead of Compound 100A when forming an EML, and Compound 205B was used (utilized) instead of Compound 200B when forming an ETL.




Evaluation Example
Efficiency and T80 lifespan of the organic light-emitting devices in Examples 1 to 43 and Comparative Examples 1 to 6 were evaluated by using (utilizing) a PR650 spectroscan source measurement unit (a product of PhotoResearch). T80 refers to an amount of time taken for the level of brightness to reach a level that is 80% of the initial level of brightness. Results are as shown in Table 1, Table 2 and Table 3 below.












TABLE 1









Efficiency
T80 lifespan



EML
ETL
(cd/A)
(time)






















Example 1
100A
200B
5.2
120



Example 2
100A
201B
5.3
130



Example 3
100A
202B
5.5
110



Example 4
100A
203B
5.4
100



Example 5
100A
204B
5.5
110



Example 6
100A
205B
5.7
120



Example 7
100A
206B
5.6
100



Example 8
100A
207B
5.5
130



Example 9
100A
208B
5.7
120



Example 10
101A
205B
5.6
120



Example 11
102A
205B
5.8
130



Example 12
103A
205B
5.4
120



Example 13
104A
205B
5.3
120



Example 14
105A
205B
5.8
110



Example 15
106A
205B
5.2
100



Example 16
107A
205B
5.5
130



Example 17
108A
205B
5.4
120



Comparative
H1
205B
4.9
70



Example 1



Comparative
H2
205B
4.7
80



Example 2






















TABLE 2










T80





Efficiency
lifespan



EML
ETL
(cd/A)
(time)






















Example 18
100A
200B:Liq
5.1
130



Example 19
100A
201B:Liq
5.3
140



Example 20
100A
202B:Liq
5.4
120



Example 21
100A
203B:Liq
5.4
120



Example 22
100A
204B:Liq
5.4
110



Example 23
100A
205B:Liq
5.6
120



Example 24
100A
206B:Liq
5.5
110



Example 25
100A
207B:Liq
5.4
140



Example 26
100A
208B:Liq
5.7
120



Comparative
H1
201B:Liq
4.8
70



Example 3



Comparative
H2
201B:Liq
4.6
80



Example 4























TABLE 3










Efficiency
Lifespan



EML
HBL
ETL
(cd/A)
(time)





















Example 27
100A
200B
BPhen:Liq
5.3
120


Example 28
100A
201B
BPhen:Liq
5.3
130


Example 29
100A
202B
BPhen:Liq
5.4
120


Example 30
100A
203B
BPhen:Liq
5.3
110


Example 31
100A
204B
BPhen:Liq
5.4
120


Example 32
100A
205B
BPhen:Liq
5.6
130


Example 33
100A
206B
BPhen:Liq
5.5
100


Example 34
100A
207B
BPhen:Liq
5.3
120


Example 35
100A
208B
BPhen:Liq
5.5
130


Example 36
101A
205B
BPhen:Liq
5.6
140


Example 37
102A
205B
BPhen:Liq
5.5
140


Example 38
103A
205B
BPhen:Liq
5.5
130


Example 39
104A
205B
BPhen:Liq
5.4
120


Example 40
105A
205B
BPhen:Liq
5.7
120


Example 41
106A
205B
BPhen:Liq
5.1
110


Example 42
107A
205B
BPhen:Liq
5.6
130


Example43
108A
205B
BPhen:Liq
5.6
120


Comparative
H1
205B
BPhen:Liq
4.9
70


Example5


Comparative
H2
205B
BPhen:Liq
4.7
80


Example6









According to Tables 1 to 3, the organic light-emitting devices in Examples 1 to 43 showed higher efficiency and longer lifespan than the organic light-emitting devices in Comparative Examples 1 to 6.
As described above, according to the one or more of the above embodiments of the present invention, an organic light-emitting device according to an embodiment of the present invention may show high efficiency, high heat resistance, and a long lifespan.
It should be understood that the example embodiments described therein should be considered in a descriptive sense only and not for purposes of limitation. Descriptions of features or aspects within each embodiment should typically be considered as available for other similar features or aspects in other embodiments.
While one or more embodiments of the present invention have been described with reference to the FIGURE, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims, and equivalents thereof.

## Claims

1. An organic light-emitting device comprising:
a first electrode;
a second electrode facing the first electrode; and
an organic layer between the first electrode and the second electrode, wherein the organic layer comprises at least one first material represented by Formula 1 below, and at least one second material represented by Formula 2 below:




in Formulae 1 and 2,
X21 is CR21 or a nitrogen atom (N); X22 is CR22 or N; X23 is CR23 or N;
L11, and L21 to L24 are each independently selected from a substituted or unsubstituted C6-C60 arylene group and a substituted or unsubstituted C1-C60 heteroarylene group;
a11, and a21 to a24 are each independently 0 or 1;
R11, R12 and R24 to R27 are each independently selected from a substituted or unsubstituted C6-C60 aryl group, a substituted or unsubstituted C1-C60 heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, and a substituted or unsubstituted monovalent non-aromatic condensed hetero-polycyclic group;
b11 and b12 are each independently selected from 1, 2, and 3;
R13, R14, R21 to R23, and R28 are each independently selected from hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a substituted or unsubstituted C1-C60 alkyl group, a substituted or unsubstituted C1-C60 alkoxy group, a substituted or unsubstituted C3-C10 cycloalkyl group, a substituted or unsubstituted C6-C60 aryl group, a substituted or unsubstituted C6-C60 aryloxy group, a substituted or unsubstituted C1-C60 heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic condensed hetero-polycyclic group, and —Si(Q1)(Q2)(Q3);
b13 and b14 are each independently selected from 1, 2, 3, and 4;
b28 is selected from 1, 2, and 3;
at least one substituent of the substituted C6-C60 arylene group, substituted C1-C60 heteroarylene group, substituted C6-C60 aryl group, substituted C1-C60 heteroaryl group, substituted monovalent non-aromatic condensed polycyclic group, substituted monovalent non-aromatic condensed hetero-polycyclic group, substituted C1-C60 alkyl group, substituted C1-C60 alkoxy group, substituted C3-C10 cycloalkyl group, and substituted C6-C60 aryloxy group is selected from:
deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, and a C1-C60 alkoxy group;
a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, and a C1-C60 alkoxy group, each substituted with at least one selected from deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C3-C10 cycloalkyl group, a C2-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C2-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arythio group, a C1-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed hetero-polycyclic group, and —Si(Q11)(Q12)(Q13);
a C3-C10 cycloalkyl group, a C2-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C2-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arythio group, a C1-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic condensed hetero-polycyclic group;
a C3-C10 cycloalkyl group, a C2-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C2-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arythio group, a C1-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic condensed hetero-polycyclic group, each substituted with at least one selected from deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, a C1-C60 alkoxy group, a C3-C10 cycloalkyl group, a C2-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C2-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arythio group, a C1-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed hetero-polycyclic group, and —Si(Q21)(Q22)(Q23); and
—Si(Q31)(Q32)(Q33); wherein,
Q1 to Q3, Q11 to Q13, Q21 to Q23, and Q31 to Q33 are each independently selected from a C1-C60 alkyl group, a C6-C60 aryl group, a C1-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic condensed hetero-polycyclic group.

2. The organic light-emitting device of claim 1, wherein
L11, and L21 to L24 are each independently selected from a phenylene group, a naphthylene group, a phenanthrenylene group, an anthracenylene group, a triphenylenylene group, a pyrenylene group, a chrysenylene group, a pyrrolylene group, a thiophenylene group, a furanylene group, an imidazolylene group, a pyridinylene group, a pyrazinylene group, a pyrimidinylene group, a pyridazinylene group, an indolylene group, a quinolinylene group, an isoquinolinylene group, a benzoquinolinylene group, a phenanthridinylene group, an acridinylene group, a phenanthrolinylene group, a benzofuranylene group, a benzothiophenylene group, a triazolylene group, a tetrazolylene group, a triazinylene group, a dibenzofuranylene group, and a dibenzothiophenylene group; and
a phenylene group, a naphthylene group, a phenanthrenylene group, an anthracenylene group, a triphenylenylene group, a pyrenylene group, a chrysenylene group, a pyrrolylene group, a thiophenylene group, a furanylene group, an imidazolylene group, a pyridinylene group, a pyrazinylene group, a pyrimidinylene group, a pyridazinylene group, an indolylene group, a quinolinylene group, an isoquinolinylene group, a benzoquinolinylene group, a phenanthridinylene group, an acridinylene group, a phenanthrolinylene group, a benzofuranylene group, a benzothiophenylene group, a triazolylene group, a tetrazolylene group, a triazinylene group, a dibenzofuranylene group, and a dibenzothiophenylene group, each substituted with at least one selected from deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C20 alkyl group, a C1-C20 alkoxy group, a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclopentenyl group, a cyclohexenyl group, a phenyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, a heptalenyl group, an indacenyl group, an acenaphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group, a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenyl group, a rubicenyl group, a coronenyl group, an ovalenyl group, a pyrrolyl group, a thiophenyl group, a furanyl group, an imidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, an indazolyl group, a purinyl group, a quinolinyl group, an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a carbazolyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolyl group, a dibenzocarbazolyl group, a thiadiazolyl group, and an imidazopyridinyl group.

3. The organic light-emitting device of claim 1, wherein L11, and L21 to L24 are each independently selected from a phenylene group, a naphthylene group, a pyridinylene group, a quinolinylene group, and an isoquinolinylene group; and
a phenylene group, a naphthylene group, a pyridinylene group, a quinolinylene group, and an isoquinolinylene group, each substituted with at least one selected from deuterium, —F, —Cl, —Br, —I, a cyano group, a nitro group, a C1-C20 alkyl group, a phenyl group, and a naphthyl group.

4. The organic light-emitting device of claim 1, wherein L11, and L21 to L24 are each independently a group selected from Formulae 3-1 to 3-6 below:



in Formulae 3-1 to 3-6,
* and *′ are each a binding site to a neighboring atom.

5. The organic light-emitting device of claim 1, wherein a11, and a21 to a24 are each independently 0.

6. The organic light-emitting device of claim 1, wherein R11, R12 and R24 to R27 are each independently selected from a phenyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, a heptalenyl group, an indacenyl group, an acenaphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group, a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenyl group, a rubicenyl group, a coronenyl group, an ovalenyl group, a pyrrolyl group, a thiophenyl group, a furanyl group, an imidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, an indazolyl group, a purinyl group, a quinolinyl group, an isoquinolinyl group, a carbazolyl group, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a carbazolyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, a benzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzosilolyl group, a benzocarbazolyl group, and a dibenzocarbazolyl group; and
a phenyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, a heptalenyl group, an indacenyl group, an acenaphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group, a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenyl group, a rubicenyl group, a coronenyl group, an ovalenyl group, a pyrrolyl group, a thiophenyl group, a furanyl group, an imidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, an indazolyl group, a purinyl group, a quinolinyl group, an isoquinolinyl group, a carbazolyl group, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a carbazolyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, a benzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzosilolyl group, a benzocarbazolyl group, and a dibenzocarbazolyl group, each substituted with at least one selected from deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C20 alkyl group, a C1-C20 alkoxy group, a phenyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, a heptalenyl group, an indacenyl group, an acenaphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group, a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenyl group, a rubicenyl group, a coronenyl group, an ovalenyl group, a pyrrolyl group, a thiophenyl group, a furanyl group, an imidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, an indazolyl group, a purinyl group, a quinolinyl group, an isoquinolinyl group, a carbazolyl group, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a carbazolyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, a benzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzosilolyl group, a benzocarbazolyl group, and a dibenzocarbazolyl group.

7. The organic light-emitting device of claim 1, wherein R11, R12 and R24 to R27 are each independently selected from a phenyl group, a naphthyl group, a fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a pyrrolyl group, a thiophenyl group, a furanyl group, an imidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, an indazolyl group, a quinolinyl group, an isoquinolinyl group, a carbazolyl group, a benzoquinolinyl group, a phthalazinyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, a benzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzosilolyl group, a benzocarbazolyl group, and a dibenzocarbazolyl group; and
a phenyl group, a naphthyl group, a fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a pyrrolyl group, a thiophenyl group, a furanyl group, an imidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, an indazolyl group, a quinolinyl group, an isoquinolinyl group, a carbazolyl group, a benzoquinolinyl group, a phthalazinyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, a benzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzosilolyl group, a benzocarbazolyl group, and a dibenzocarbazolyl group, each substituted with at least one selected from deuterium, —F, —Cl, —Br, —I, a cyano group, a nitro group, a C1-C20 alkyl group, a phenyl group, a naphthyl group, a pyridinyl group, a quinolinyl group, and an isoquinolinyl group.

8. The organic light-emitting device of claim 1, wherein R11, R12 and R24 to R27 are each independently selected from a phenyl group, a naphthyl group, a fluorenyl group, a pyridinyl group, a quinolinyl group, and an isoquinolinyl group; and
a phenyl group, a naphthyl group, a fluorenyl group, a pyridinyl group, a quinolinyl group, and an isoquinolinyl group, each substituted with at least one selected from deuterium, —F, —Cl, —Br, —I, a cyano group, a nitro group, a C1-C20 alkyl group, a phenyl group, a naphthyl group, a pyridinyl group, a quinolinyl group, and an isoquinolinyl group.

9. The organic light-emitting device of claim 1, wherein R11 and R12 are each independently selected from Formulae 4-1 to 4-5, 4-23, and 4-24 below:



wherein in Formulae 4-1 to 4-5, 4-23, and 4-24 above
* is a binding site to a neighboring atom.

10. The organic light-emitting device of claim 1, wherein R24 to R27 are each independently selected from Formulae 4-1 to 4-3, and 4-6 to 4-30 below:









wherein in Formulae 4-1 to 4-3 and 4-6 to 4-30
* is a binding site to a neighboring atom.

11. The organic light-emitting device of claim 1, wherein R13, R14, R21 to R23, and R28 are each independently selected from hydrogen, deuterium, —F, —Cl, —Br, —I, a cyano group, a nitro group, a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, a sec-butyl group, an iso-butyl group, a tert-butyl group, an n-pentyl group, an n-hexyl group, an n-heptyl group, an n-octyl group, a phenyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, a heptalenyl group, an indacenyl group, an acenaphthyl group, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group, a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenyl group, a rubicenyl group, a coronenyl group, an ovalenyl group, a pyrrolyl group, a thiophenyl group, a furanyl group, an imidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, an indazolyl group, a purinyl group, a quinolinyl group, an isoquinolinyl group, a carbazolyl group, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, a benzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzosilolyl group, a benzocarbazolyl group, and a dibenzocarbazolyl group.

12. The organic light-emitting device of claim 1, wherein R13, R14, R21 to R23, and R28 are each independently selected from hydrogen, deuterium, —F, —Cl, —Br, —I, a cyano group, a nitro group, a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, a sec-butyl group, an iso-butyl group, a tert-butyl group, an n-pentyl group, an n-hexyl group, an n-heptyl group, an n-octyl group, and groups represented by Formula 4-1 to 4-30:









wherein in Formulae 4-1 to 4-30
* is a binding site to a neighboring atom.

13. The organic light-emitting device of claim 1, wherein the at least one first material is represented by any one of Formulae 1A and 1B, and the at least one second material is represented by any one of Formulae 2A to 2C below:

14. The organic light-emitting device of claim 1, wherein the at least one first material is represented by any one of Formulae 1A-1, 1A-2, 1B-1, and 1B-2, and
the at least one second material is represented by any one of Formulae 2A-1 to 2C-1:

15. The organic light-emitting device of claim 1, wherein the at least one first material is selected from Compounds 100 to 201 below, and the at least one second material is selected from Compounds 300 to 544 below:

16. The organic light-emitting device of claim 1, wherein
the organic layer comprises:
an emission layer; and
an electron transport region between the second electrode and the emission layer, wherein the emission layer comprises the at least one first material represented by Formula 1; and
the electron transport region comprises the at least one second material represented by Formula 2.

17. The organic light-emitting device of claim 16, wherein
the electron transport region comprises an electron transport layer; and
the electron transport layer comprises the at least one second material represented by Formula 2.

18. The organic light-emitting device of claim 16, wherein the electron transport region comprises a hole blocking layer; and
the hole blocking layer comprises the at least one second material represented by Formula 2.

19. The organic light-emitting device of claim 17, wherein the emission layer and the electron transport layer are adjacent to each other.

20. The organic light-emitting device of claim 18, wherein the emission layer and the hole blocking layer are adjacent to each other.