Patent ID: 8951650
Filing Date: 2015-02-10
Classification: C09K,H01L,H05B,Y10S

Abstract:
1. An organic electroluminescent element comprising a substrate having thereon an anode, a cathode, and a plurality of organic layers sandwiched between the anode and the cathode, wherein the plurality of organic layers comprise: a light emitting layer containing a phosphorescence emitting compound; and an electron transport layer containing a compound represented by Formula (1): wherein n1 is an integer of 1; Y1 is a substituted or unsubstituted condensed heteroaryl group selected from the group consisting of a dibenzofuran group, a dibenzothiophene group, and a carbolinyl group, provided that a substituent of the substituted condensed heteroaryl group is selected from the group consisting of a carbazole group, a phenyl group, a pyridyl group, and a dibenzofuran group; Ar1 is a group represented by Formula (A-1): wherein X is —N(R)—, —O—, or —S—; E1 to E8 each are —C(R1)= or —N═; R, and R1 each are a hydrogen atom or a substituent; Y2 is a single bond; E11 to E20 each are —C(R2)= or —N═, and at least one of E11 to E20 is —N═, R2 is a hydrogen atom, a substituent or a linking site, provided that at least one of E11 and E12 is —C(R2)=, and R2 is a linking site; when E11 to E15 each are —C(R2)=, R2 is a hydrogen atom or a linking site; n2 is an integer of 1 to 4; and (*) is a bonding site to Y1 of Formula (1).