A universal host material for high external quantum efficiency close to 25% and long lifetime in green fluorescent and phosphorescent OLEDs.
High quantum efficiency close to 25% and long lifetime in green thermally activated delayed fluorescent and phosphorescent organic light emitting diodes are achieved using universal 3',5'-di(carbazol-9-yl)-[1,1'-biphenyl]-3,5-dicarbonitrile host material.
Department of Polymer Science and Engineering, Dankook University, 126, Jukjeon-dong, Suji-gu, Yongin, Gyeonggi, 448-701, Korea.
Yong Joo
YJ
Cho
Kyoung Soo
KS
Yook
Jun Yeob
JY
Lee
delayed fluorescent device; green host; high quantum efficiency; phosphorescent device; universal host