Kim Bitnari,Kang Hee-Ryong,Lim Young-Mook,Hong Jin-Ri,Lee Tae-Jin,Cho Sang-Hee
申请号：
US201615735972
公开号：
US2018182973(A1)
申请日:
2016.04.25
申请国别(地区):
美国
年份:
2018
代理人:
摘要：
The present invention relates to an organic electroluminescent device comprising at least one light-emitting layer disposed between an anode and a cathode, wherein the light-emitting layer comprises a host and a phosphorescent dopant, wherein the host comprises a plurality of host compounds, wherein at least a first host compound of the plurality of host compounds has an amine-carbazole structure substituted with naphthyl-phenyl and aryl (Formula 1), and a second host compound has a di-C-benzocarbazole structure comprising nitrogen-containing heteroaryl (Formula 2). By using the plurality of host compounds of the present disclosure, the organic electroluminescent device may have long lifespan while maintaining high efficiency at high luminance compared to the conventional organic electroluminescent device using a sole host compound.
