Patent ID: 8623523
Filing Date: 2014-01-07
Classification: C07D,C09K,H01L,H05B,Y10S

Abstract:
1. A light-emitting device comprising: a pair of electrodes; and a light-emitting layer comprising a quinoxaline derivative and a phosphorescent substance between the pair of electrodes, wherein the quinoxaline derivative comprises a quinoxaline skeleton, a first aryl group, a second aryl group, and a third aryl group, wherein each of the first aryl group and the second aryl group is a substituted or unsubstituted biphenyl group, or a substituted or unsubstituted terphenyl group, and wherein the third aryl group is selected from a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, and a substituted or unsubstituted monocyclic heterocycle group, wherein the first aryl group, the second aryl group, and the third aryl group are attached to the quinoxaline skeleton as a triarylamine group, wherein the first aryl group, the second aryl group, and the third aryl group are present in terminal positions of the triarylamine group, and wherein there is no further substitution on the quinoxaline skeleton.