High-Efficiency Deep-Blue-Phosphorescent Organic Light-Emitting Diodes Using a Phosphine Oxide and a Phosphine Sulfide High-Triplet-Energy Host Material with Bipolar Charge-Transport Properties

被引：176
|
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 MATERIALS | 2010年 / 22卷 / 16期
关键词：
ELECTROPHOSPHORESCENT DEVICES;
D O I：
10.1002/adma.200903321
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 have been developed using bipolar-type high-triplet-energy host materials with a carbazole core and two phosphine oxide (PPO21) or phosphine sulfide (PPS21) units. A high quantum efficiency of 19.2% with a deep-blue color coordinate of (0.14,0.16) was achieved in the deep-blue device with PPO21 as a host material (see figure).
引用
收藏
页码：1872 / +
页数：6
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