A Study on the Phosphorescent Blue Organic Light-Emitting Diodes Using Triplet Exciton Blocking Layer

被引：6
|
作者：
Lee, Seok Jae [1 ]
Seo, Ji Hyun [1 ]
Seo, Ji Hoon [1 ]
Kim, Gu Young [1 ]
Jin, You Young [1 ]
Kim, Young Kwan [1 ]
机构：
[1] Hongik Univ, Dept Informat Display, Seoul 121791, South Korea
来源：
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2009年 / 9卷 / 12期
关键词：
Triplet Exciton Blocking Layer; Blue Phosphorescent Organic Light-Emitting Diodes; HIGH-EFFICIENCY; ELECTROPHOSPHORESCENT DEVICES;
D O I：
10.1166/jnn.2009.1654
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We studied the use of N,N'-dicarbazolyl-3,5-benzene (mCP) of the triplet energy level 2.90 eV and p-bis(triphenylsilyly)benzene (UGH2) of the wide triplet energy band gap 3.50 eV as triplet exciton blocking layer (TEBL) to get high efficiency in phosphorescent blue organic light-emitting diodes. Five devices (Devices I similar to V) with different structures were fabricated to investigate the effect of mCP and UGH2 TEBLs on device performances. The maximum quantum efficiencies of devices I, II, III, IV and V were 5.10%, 1.41%, 5.90%, 4.98% and 0.61%, respectively.
引用
收藏
页码：7044 / 7047
页数：4
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