Blue-emitting heteroleptic iridium(III) complexes suitable for high-efficiency phosphorescent OLEDs

被引:416
作者
Yang, Cheng-Han
Cheng, Yi-Ming
Chi, Yun [1 ]
Hsu, Chia-Jung
Fang, Fu-Chuan
Wong, Ken-Tsung
Chou, Pi-Tai
Chang, Chih-Hao
Tsai, Ming-Han
Wu, Chung-Chih
机构
[1] Natl Tsing Hua Univ, Dept Chem, Hsinchu 300, Taiwan
[2] Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan
[3] Natl Tsing Hua Univ, Dept Elect Engn, Hsinchu 300, Taiwan
[4] Natl Tsing Hua Univ, Grad Inst Electroopt Engn, Hsinchu 300, Taiwan
关键词
chelate ligands; density functional calculations; iridium; luminescence; N ligands;
D O I
10.1002/anie.200604733
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Dyed-in-the-wool true blue: True-blue phosphorescent organic light-emitting diodes are fabricated by using an IrIII dopant (see picture; gray C; blue N; red Ir; green F). The Ir complex has an enhanced metal-to-ligand charge-transfer contribution, hence a shortened radiative lifetime in the excited state. The maximum external quantum efficiency of the fabricated device is 8.5% and the main emission is around 450 nm. (Figure Presented). © 2007 Wiley-VCH Verlag GmbH & Co. KGaA.
引用
收藏
页码:2418 / 2421
页数:4
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