Efficiency improvement of red organic light-emitting diodes using a blue phosphorescent exciton blocking layer

被引:5
作者
Yook, Kyoung Soo [1 ]
Lee, Jun Yeob [1 ]
机构
[1] Dankook Univ, Dept Polymer Sci & Engn, Yongin 448701, Kyeonggi Do, South Korea
关键词
High efficiency; Phosphorescent red device; Exciton blocking;
D O I
10.1016/j.jlumin.2008.10.007
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Quantum efficiency of red organic light-emitting diodes was improved using a blue phosphorescent emitting layer as an exciton blocking layer. Compared with 8.1% quantum efficiency of standard devices without an exciton blocking layer, high quantum efficiency of 14.1% was obtained using a blue phosphorescent emitting layer between the hole transport layer and the red emitting layer. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:300 / 302
页数:3
相关论文
共 5 条
[1]   High-efficiency and low-voltage p-i-n electrophosphorescent organic light-emitting diodes with double-emission layers [J].
He, GF ;
Pfeiffer, M ;
Leo, K ;
Hofmann, M ;
Birnstock, J ;
Pudzich, R ;
Salbeck, J .
APPLIED PHYSICS LETTERS, 2004, 85 (17) :3911-3913
[2]   High efficiency phosphorescent organic light-emitting diodes using carbazole-type triplet exciton blocking layer [J].
Kim, Sung Hyun ;
Jang, Jyongsik ;
Lee, Jun Yeob .
APPLIED PHYSICS LETTERS, 2007, 90 (22)
[3]   High efficiency phosphorescent organic light emitting diodes using triplet quantum well structure [J].
Kim, Sung Hyun ;
Jang, Jyongsik ;
Hong, Jae-Min ;
Lee, Jun Yeob .
APPLIED PHYSICS LETTERS, 2007, 90 (17)
[4]   Effect of doping profile on the lifetime of green phosphorescent organic light-emitting diodes [J].
Lee, Jun Yeob .
APPLIED PHYSICS LETTERS, 2006, 89 (15)
[5]   High efficiency and low power consumption in active matrix organic light emitting diodes [J].
Lee, JY ;
Kwon, JH ;
Chung, HK .
ORGANIC ELECTRONICS, 2003, 4 (2-3) :143-148