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

页码：1872 / +

页数：6

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