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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/47413

Title: Efficiency enhancement of flexible organic light-emitting devices by using antireflection nanopillars
Authors: Pei-Kuen Wei
Yu-Hsuan Ho
Chung-Chun Liu
Shun-Wei Liu
Hsun Liang
Chih-Wei Chu
Contributors: 國立臺灣海洋大學:光電科學研究所
Date: 2011-04
Issue Date: 2018-07-18T06:40:30Z
Publisher: OPTICS EXPRESS
Abstract: Abstract: We present an antireflection structure consisted of irregular nanopillars to increase light extraction efficiency of flexible organic light-emitting devices. The nanopillars were made by imprinting the anodized aluminum oxide on polycarbonate substrates. The thermal viscosity effect formed the nanopillars with tapered shapes. Such nanopillars show excellent antireflection properties for a wide range of incident angles and wavelengths. The normal transmittance was improved from 85.5% to 95.9% for 150-nm-height nanopillars. The transmittance was greatly improved from 52.8% to 89.1% at 60° incident angle. With this antireflection structure, the device efficiency was improved 69% as compared to devices with flat substrates. Due to wide-angle antireflection, the image contrast ratio was also significantly improved.
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/47413
Appears in Collections:[光電科學研究所] 期刊論文

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