Phenylcarbazole-Based Phosphine Oxide Host Materials For High Efficiency In Deep Blue Phosphorescent Organic Light-Emitting Diodes

被引：188
|
作者：
Jeon, Soon Ok [1 ]
Yook, Kyoung Soo [1 ]
Joo, Chul Woong [1 ]
Lee, Jun Yeob [1 ]
机构：
[1] Dankook Univ, Dept Polymer Sci & Engn, Yongin 448701, Gyeonggi, South Korea
来源：
ADVANCED FUNCTIONAL MATERIALS | 2009年 / 19卷 / 22期
关键词：
ELECTROPHOSPHORESCENT DEVICES; QUANTUM EFFICIENCY; ENERGY-GAP; COMPLEXES; OLEDS;
D O I：
10.1002/adfm.200901274
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Highly efficient deep blue phosphorescent organic light-emitting diodes are developed using novel phenylcarbazole-based phosphine oxide host materials (PPO1 and PPO2). A deep blue phosphorescent dopant, tris((3,5- difluoro-4-cyanophenyl)pyridine) iridium, is doped into PPO1 and PPO2 at a doping concentration of 15% and a high quantum efficiency of 18.4% is obtained with color coordinates of (0.14, 0.15).
引用
收藏
页码：3644 / 3649
页数：6
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