Enhanced color stability and improved performance in white organic light-emitting devices by utilizing a double-graded structure

被引：12
|
作者：
Lin, Hua-Ping [1 ]
Zhou, Fan [1 ]
Zhang, Xiao-Wen [2 ]
Yu, Dong-Bin [1 ]
Li, Jun [1 ]
Zhang, Liang [1 ]
Jiang, Xue-Yin [1 ]
Zhang, Zhi-Lin [1 ]
机构：
[1] Shanghai Univ, Dept Mat Sci, Shanghai 201800, Peoples R China
[2] Guilin Univ Elect Technol, Guangxi Key Lab Informat Mat, Guilin 541004, Peoples R China
来源：
SYNTHETIC METALS | 2011年 / 161卷 / 11-12期
基金：
中国国家自然科学基金;
关键词：
White OLED; Double-graded; Color stability; High current efficiency; EMISSION; DIODES; LAYER;
D O I：
10.1016/j.synthmet.2011.02.001
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
High efficiency fluorescent white organic light-emitting device (WOLEDs) was investigated by using a double-graded (DG) structure. This strategy can greatly improve the device performances such as better color stability, higher luminance and enhanced efficiency. The optimized WOLED gives the Commission Internationale de L'Eclairage (CIE) color coordinates of (0.324, 0.341) at 20 mA/cm(2), a negligible color shift of Delta(x,y) = +/-[0.000.001] from 4 to 200 mA/cm(2), a maximum brightness of 39,740 cd/m(2) at 17 V and a maximum luminance efficiency of 11.5 cd/A at 16 V. In addition, current-induced fluorescence quenching is mostly controlled. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：1133 / 1136
页数：4
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