Improved viewing characteristics of red emission top-emitting organic light-emitting devices by integrating grating

被引：2
|
作者：
Wang, Yan-Hui [1 ]
Cui, Hai-Feng [1 ]
Zhang, Yi-Fan [1 ]
Li, Ai-Wu [1 ]
机构：
[1] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China
来源：
OPTICAL ENGINEERING | 2013年 / 52卷 / 08期
关键词：
top-emitting organic light-emitting devices; microcavity effects; viewing-angle characteristics; grating; DIODES; EFFICIENT; MICROCAVITIES; ENHANCEMENT; PHYSICS;
D O I：
10.1117/1.OE.52.8.080502
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
An effective way to resolve the viewing-angle characteristics of microcavity red emission top-emitting organic light-emitting diodes (TOLEDs) by introducing grating and filling process into TOLEDs is demonstrated. From this approach, gradually changed cavity length can be obtained and the range of the resonant wavelength in these devices can be broadened. As a result, TOLEDs with grating exhibit a quasi-Lambertian emission pattern and have no color shift at different viewing angles. In addition, we can almost observe the same luminance and efficiency in TOLEDs with and without grating. (C) 2013 Society of Photo-Optical Instrumentation Engineers (SPIE)
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页数：3
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