Improved light extraction efficiency of white organic light-emitting devices by biomimetic antireflective surfaces

被引：46
|
作者：
Li, Yunfeng [1 ]
Li, Feng [1 ]
Zhang, Junhu [1 ]
Wang, Chunlei [1 ]
Zhu, Shoujun [1 ]
Yu, Huijun [1 ]
Wang, Zhanhua [1 ]
Yang, Bai [1 ]
机构：
[1] Jilin Univ, Coll Chem, State Key Lab Supramol Struct & Mat, Changchun 130012, Jilin, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 15期
基金：
美国国家科学基金会;
关键词：
antireflection coatings; biomimetics; etching; light emitting devices; light transmission; organic compounds; photoluminescence; reflectivity; EXTERNAL-QUANTUM-EFFICIENCY; DIODES; ENHANCEMENT; OUTPUT; SCATTERING; CRYSTALS; LAYER; FILM;
D O I：
10.1063/1.3396980
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
One simple method to increase the light extraction from white organic light-emitting devices by using biomimetic silica antireflective surfaces is demonstrated. A silica cone array was directly etched on the opposite side of the indium-tin-oxide coated fused silica substrate. The antireflective surfaces can dramatically suppress the reflection loss and increase the transmission of light over a large range of wavelength and a large field of view. Using such surfaces, the luminance efficiency of the device in the normal direction is increased by a factor of 1.4 compared to that of the device using flat silica substrate.
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页数：3
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