White organic light-emitting devices with a bipolar transport layer between blue fluorescent and yellow phosphor-sensitized-fluorescent emitting layers

被引：12

作者：

Xue, Qin ^{[1
]}

Xie, Guohua ^{[1
]}

Chen, Ping ^{[1
]}

Lu, Jianhua ^{[1
]}

Zhang, Dandan ^{[1
]}

Tang, Yanna ^{[1
]}

Zhao, Yi ^{[1
]}

Hou, Jingying ^{[1
]}

Liu, Shiyong ^{[1
]}

机构：

[1] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China

来源：

SYNTHETIC METALS | 2010年 / 160卷 / 7-8期

基金：

中国国家自然科学基金;

关键词：

White organic light-emitting diodes; Bipolar transport layer; Phosphorescence sensitized; EFFICIENCY; EMISSION;

D O I：

10.1016/j.synthmet.2009.12.011

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report white organic light-emitting devices (WOLEDs) based on 4,4'-bis(2,2'-diphenylvinyl)-1,1'-biphenyl (DPVBi) and phosphorescence sensitized 5,6,11,12-tetraphenylnaphthacene (rubrene). By introducing a bipolar transport 4,4'-N,N'-dicarbazole-biphenyl (CBP) layer between the fluorescent and the phosphor-sensitized-fluorescent layers, additional light emission from the phosphorescence sensitized layer is observed. This can be attributed to the elimination of the Dexter energy transfer between these two emitters. White emission with Commission International de L'Eclairage coordinates of (0.22,0.33) and a maximum luminance of 22,360 cd/m(2) were obtained. The maximum current efficiency can reach 10.7 cd/A. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：829 / 831

页数：3

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