White top-emitting organic light-emitting diodes employing a heterostructure of down-conversion layers

被引：29
|
作者：
Gohri, Vipul [1 ]
Hofmann, Simone [1 ]
Reineke, Sebastian [1 ]
Rosenow, Thomas [1 ]
Thomschke, Michael [1 ]
Levichkova, Marieta [1 ]
Luessem, Bjoern [1 ]
Leo, Karl [1 ]
机构：
[1] Inst Angew Photophys, D-01069 Dresden, Germany
来源：
ORGANIC ELECTRONICS | 2011年 / 12卷 / 12期
关键词：
Down conversion; Capping layer; White OLED; Top-emitting; MEDIATED ENERGY-TRANSFER; COLOR CONVERSION; DEVICES;
D O I：
10.1016/j.orgel.2011.09.002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We investigate white top-emitting organic light-emitting diodes (OLEDs) based on a heterostructure of down-conversion (DC) layers. The white DCOLED comprises consecutive organic conversion layers of 4-dicyanomethylene-2-methyl-6-p-dimethylaminostyryl-4H-pyran (DCM) doped in a matrix of tris(8-hydroxy-quinolinato)aluminum (Alq(3)), and N4,N41'-bis-(4-tert-butyl-phenyl)-N4, N4'-di-fluoranthen-3-yl-diphenylether-4,4'-diamine (OYSE). The DC layers also function as capping layers to enhance the light outcoupling and optical modification of the underlying blue OLED. White light emission with CIE color coordinates of (0.27, 0.26) and a color rendering index of 60 is achieved. Furthermore, the spectral angular dependence of the white device is examined. (C) 2011 Elsevier B. V. All rights reserved.
引用
收藏
页码：2126 / 2130
页数：5
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