High efficiency white organic light-emitting diodes based on double recombination zones

被引：9

作者：

Guo, Fawen ^{[1
]}

Ma, Dongge ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, Grad Sch, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China

来源：

OPTICAL MATERIALS | 2006年 / 28卷 / 8-9期

关键词：

white emission; organic light-emitting diodes; recombination zone;

D O I：

10.1016/j.optmat.2005.05.006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A multilayer white organic light-emitting diode (OLED) with high efficiency was present. The luminescent layer was composed of a red dye 4-(dicyanomethylene)-2-t-butyle-6-(1,1,7,7-tetra-methyljulolidyl-9-enyl)-4H-pyran (DCJTB) doped into NN-bis-(1-naphthyl)-N,N-diphenyl-1,1-biphenyl-4-4-diamine (NPB) layer and a blue-emitting 9,10-bis-(beta-naphthyl)-anthrene (DNA) layer. Red and blue emission, respectively, from DCJTB:NPB and DNA can be obtained by effectively controlling the thicknesses of DCJTB:NPB and DNA layers, thus a stable white light emission was achieved. The device turned on at 3.5 V, and the maximum luminance reached 16000 cd/m(2) at 21 V. The maximum current efficiency and power efficiency were 13.6 cd/A and 5.5 lm/W, respectively. (C) 2005 Elsevier B.V. All rights reserved.

引用

页码：966 / 969

页数：4

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