Improved efficiency in red phosphorescent organic light-emitting devices using double doping structure

被引：8
|
作者：
Kim, Sung Hyun
Jang, Jyongsik
Lee, Jun Yeob [1 ]
机构：
[1] Dankook Univ, Dept Polymer Sci & Engn, Seoul 140714, South Korea
[2] Seoul Natl Univ, Sch Chem & Biol Engn, Seoul 151742, South Korea
来源：
SYNTHETIC METALS | 2007年 / 157卷 / 4-5期
关键词：
sensitizer; high efficiency; red emission;
D O I：
10.1016/j.synthmet.2007.02.001
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Light emission efficiency of red phosphorescent organic light-emitting diodes was improved by using a double doping structure in light emitting layer. Red devices with tris(2-phenylpyridine) iridium (Ir(ppy)(3)) as a co-dopant for tris(l-phenylisoquinoline) iridium (Ir(piq)(3)) showed higher efficiency than Ir(piq)(3) device. Ir(ppy)(3) acted as a sensitizer for energy transfer from (4,4'-N,N'-dicarbazole)biphenyl to Ir(piq)(3) and enhanced luminance efficiency of Ir(piq)(3) by 30%. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：228 / 230
页数：3
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