Very broad white-emission spectrum based organic light-emitting diodes by four exciplex emission bands

被引：24

作者：

Zhu, Jianzhuo ^{[1
,2
]}

Li, Wenlian ^{[1
]}

Han, Liangliang ^{[1
,2
]}

Chu, Bei ^{[1
]}

Zhang, Guang ^{[1
,2
]}

Yang, Dongfang ^{[1
,2
]}

Chen, Yiren ^{[1
]}

Su, Zisheng ^{[1
,2
]}

Wang, Junbo ^{[1
,2
]}

Wu, Shuanghong ^{[1
,2
]}

Tsuboi, Taiju ^{[3
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, Key Lab Excited State Proc, Changchun 130033, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

[3] Kyoto Sangyo Univ, Fac Engn, Kita Ku, Kyoto 6038555, Japan

来源：

OPTICS LETTERS | 2009年 / 34卷 / 19期

基金：

中国国家自然科学基金;

关键词：

ELECTROLUMINESCENT DEVICES; INTERFACE; MOLECULES; BLENDS; LAYER;

D O I：

10.1364/OL.34.002946

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

White light is emitted by an organic light-emitting diode by inserting two blend layers of m-MTDATA: Al(DBM)(3) and TPD: Bphen between an m-MTDATA hole-transporting layer and a Bphen electron-transporting layer, where m-MTDATA, TPD, Al(DBM)(3), and Bphen are 4,4',4 ''-tris[methylpheny(phenyl)amino]-triphenylamine, N,N'-bis(3-methylphenyl)-N,N'-diphenylbenzidine, tris(dibenzoyl methane)-aluminum, and 4,7-diphenyl-1,10-phenanthroline molecules, respectively. The white-light spectrum consists of four broad bands that arise from blue-emitting TPD/Bphen, green-emitting m-MTDATA/Bphen, orange-emitting TPD/Al(DBM)(3), and red-emitting m-MTDATA/Al(DBM)(3) exciplexes, respectively, and strongly overlap at 400-760 nm. Any monomer emission is not generated. A high-color rendering index of 94.1, Commission Internationale de l'Eclairage-1931(x,y) coordinates of (0.33, 0.35), and correlated color temperature of 5477 K were obtained at 10 V. Discussion is given for the formation mechanism of the four exciplexes. (C) 2009 Optical Society of America

引用

页码：2946 / 2948

页数：3

共 11 条

[1] BLUE LIGHT-EMITTING ORGANIC ELECTROLUMINESCENT DEVICES [J].