Patent ID: 6660410
Filing Date: 2003-12-09
Classification: C09K,H01L,H05B,Y10S,Y10T

Abstract:
An organic electroluminescence element comprising:an anode layer, a cathode layer, and an organic luminescence layer therebetween, the organic luminescence layer having a carbazole derivative with a glass-transition temperature of 110Â° C. or higher, and a phosphorescent dopant, the carbazole derivative being at least one of the compounds or a compound from the compounds of the following general formulae (1) to (4): wherein Ar1 is a substituted or non-substituted phenyl, biphenyl, terphenyl, quaterphenyl, naphthyl or carbazolylphenyl group; is each independently a carbazolyl group, at least one of Ar1, contains a carbazole group; and m and n is 0 or 1; wherein R1 to R8 are each independently a hydrogen or alkyl group; X1 and X2 are each independently an alkyl, or alkyl-substituted or non-substituted phenyl or biphenyl group; Y is phenylene or biphenylene; and p is 2 or 3; wherein is each independently a carbazolyl group, R9 is an alkyl-substituted or non-substituted phenyl, biphenyl, terphenyl, naphthyl, carbazolyl group or and at least one of R9, contains a carbazolyl group; and wherein Z is a trivalent nitrogen atom or benzenetriyl group; and Ar12 to Ar14 are each independently a carbazolyl, carbazolylphenyl, carbazolylbiphenyl, carbazolylnaphthyl group or provided that all Ar12 to Ar14 are not the same group.