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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/47382

Title: Efficiency enhancement of organic light-emitting devices by using honeycomb metallic electrodes and two-dimensional photonic crystal arrays
Authors: Pei-Kuen Wei
Kai-Yu Peng
Yu-Hsuan Ho
Da-Hua Wei
Yueh-Chung Yu
Yeong-Der Yao
Wei-Cheng Tian
Contributors: 國立臺灣海洋大學:光電科學研究所
Keywords: Photonic crystals
Nanosphere lithography
Extraction efficiency enhancement
Organic light-emitting devices
Metallic electrode
Date: 2014-11
Issue Date: 2018-07-17T06:03:12Z
Publisher: Organic Electronics
Abstract: Abstract: In this paper, a facile fabrication technique called nanosphere lithography combining with two-step reactive ion etching method for patterning honeycomb metallic electrode with high transparency and excellent uniformity is demonstrated. The patterning silver electrode with 15-nm film thickness and 68.6% fill-factor was used as the organic light-emitting diode (OLED) anode, which showed an average transmittance of 77.4% and sheet resistance of 30.7 Ω/□. The current efficiency is 8.35 cd/A for the OLED with patterned silver anode under 100 cd/m2 operation brightness, which was 47% higher than the device with indium tin oxide (ITO) anode. After applying the polystyrene nanosphere to form a photonic crystal array onto the device, the extracted light from organic mode can be further coupled out from device substrate mode. The overall luminous enhancement of the device with the combination of internal honeycomb metallic anode and external photonic crystal array is 115% higher than the traditional ITO-based OLED.
Relation: 15(11) pp.3043-3051
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/47382
Appears in Collections:[光電科學研究所] 期刊論文

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