Highly efficient red-emission polymer phosphorescent light-emitting diodes based on two novel tris(1-phenylisoquinolinato-C2,N)iridium(III) derivatives

被引:79
作者
Huang, Jinsong
Watanabe, Taiki
Ueno, Kazunori
Yang, Yang [1 ]
机构
[1] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA
[2] Canon Inc, OD Dev Project, Tokyo 1468501, Japan
关键词
D O I
10.1002/adma.200601040
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Tris(2-phenylpyridine) iridium (Ir(ppy)3) derivatives are used to fabricate highly efficient red-emission phosphorescent polymer LEDs. The continuous tuning of the electron current to balance the hole current perfectly, by changing the thickness of the electron-injection layer, is demonstrated. Peak efficiencies of 16.9 cd A(-1) and 17.6 lm W-1 are achieved for red emission (see figure).
引用
收藏
页码:739 / +
页数:6
相关论文
共 21 条
[1]   Highly efficient phosphorescent emission from organic electroluminescent devices [J].
Baldo, MA ;
O'Brien, DF ;
You, Y ;
Shoustikov, A ;
Sibley, S ;
Thompson, ME ;
Forrest, SR .
NATURE, 1998, 395 (6698) :151-154
[2]   LiF/Al cathodes and the effect of LiF thickness on the device characteristics and built-in potential of polymer light-emitting diodes [J].
Brown, TM ;
Friend, RH ;
Millard, IS ;
Lacey, DJ ;
Burroughes, JH ;
Cacialli, F .
APPLIED PHYSICS LETTERS, 2000, 77 (19) :3096-3098
[3]   The effect of interfacial layer on the performance of organic light-emitting diodes [J].
Choulis, SA ;
Choong, VE ;
Mathai, MK ;
So, F .
APPLIED PHYSICS LETTERS, 2005, 87 (11)
[4]  
Gong X, 2002, ADV MATER, V14, P581, DOI 10.1002/1521-4095(20020418)14:8<581::AID-ADMA581>3.0.CO
[5]  
2-B
[6]   Enhanced electroluminescence using polystyrene as a matrix [J].
He, GF ;
Li, YF ;
Liu, J ;
Yang, Y .
APPLIED PHYSICS LETTERS, 2002, 80 (22) :4247-4249
[7]  
HUANG J, UNPUB
[8]   Improving the power efficiency of white light-emitting diode by doping electron transport material [J].
Huang, Jinsong ;
Hou, Wei-Jen ;
Li, Juo-Hao ;
Li, Gang ;
Yang, Yang .
APPLIED PHYSICS LETTERS, 2006, 89 (13)
[9]   Achieving high-efficiency polymer white-light-emitting devices [J].
Huang, JS ;
Li, G ;
Wu, E ;
Xu, QF ;
Yang, Y .
ADVANCED MATERIALS, 2006, 18 (01) :114-117
[10]  
Klessinger M., 1995, EXCITED STATES PHOTO