Efficient and Low-voltage Phosphorescent Organic Light-emitting Devices Based on Blue Iridium Complex Host  

作　　者：YU Jing YIN Yongming XIE Wenfa ZHANG Letian 

机构地区：[1]State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, P R. China

出　　处：《Chemical Research in Chinese Universities》2015年第4期569-572,共4页高等学校化学研究（英文版）

基　　金：Supported by the National Natural Science Foundation of China（Nos.61474054, 61475060, 61177026）

摘　　要：By adopting a phosphorescent host/guest system consisting of blue iridium complex as host and a series of phosphorescent dyes as guest, efficient and low-voltage monochromic organic light-emitting devices（OLEDs） were fabricated. The devices with blue iridium host have higher power efficiency than the device with the conventional host 4,4＇-N,N＇-dicarbazole-biphenyl. The enhancement of the maximum power efficiency in green phosphorescent device can reach 37.2%. Dichromatic white OLED could be achieved by simply adjusting the concentration of the orange dyes. At a brightness of 1000 cd/m2, the power efficiency of the white device is 8.4 lm/W with a color ren- dering index of 76.By adopting a phosphorescent host/guest system consisting of blue iridium complex as host and a series of phosphorescent dyes as guest, efficient and low-voltage monochromic organic light-emitting devices（OLEDs） were fabricated. The devices with blue iridium host have higher power efficiency than the device with the conventional host 4,4＇-N,N＇-dicarbazole-biphenyl. The enhancement of the maximum power efficiency in green phosphorescent device can reach 37.2%. Dichromatic white OLED could be achieved by simply adjusting the concentration of the orange dyes. At a brightness of 1000 cd/m2, the power efficiency of the white device is 8.4 lm/W with a color ren- dering index of 76.

关 键 词：Organic light-emitting device Blue iridium complex host LOW-VOLTAGE 

分 类 号：TN383.1[电子电信—物理电子学] O625.34[理学—有机化学]