Patent ID: 6821645
Filing Date: 2004-11-23
Classification: C07F,C09K,H01L,H05B,Y10S

Abstract:
An organic light-emitting device comprising a light-emitting layer or a plurality of thin organic compound layers containing a light-emitting layer interposed between a pair of electrodes, wherein at least one layer comprises at least one light-emitting material having a partial structure selected from the group of the following formula (4) to (7), (9), (22) and a tautomer thereof: wherein Z11 and Z12 each represent a nonmetallic atom group required to form a 5- or 6-membered ring with at least one of carbon atom and nitrogen atom, said ring optionally having a substituent or forming a condensed ring with another ring; Ln1 represents a divalent group; Y1 represents a nitrogen atom or carbon atom; and b1 represents a single bond or double bond,(CO)Irâ€ƒâ€ƒ(5) wherein CO represents a carbonyl group and the carbon atom directly bonds to Ir,(NC)Irâ€ƒâ€ƒ(6) wherein CN represents a cyano group and the carbon atom directly bonds to Ir, wherein Z21 and Z22 each represent a nonmetallic atom group required to form a 5- or 6-membered ring, said ring optionally having a substituent or forming a condensed ring with another ring; Y2 represents a nitrogen atom or carbon atom; and b2 represents a single bond or double bond, Z22 represents a nonmetallic atom group required to form a 1,2,3-triazole ring, a 1,2,4 triazole ring, or a pyridazine ring, wherein z201 and Z301 each represent an atomic group for forming an aryl or heteroaryl ring, wherein Z1 represents an atomic group which forms a heteroaryl ring.