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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/47404

Title: Improve efficiency of white organic light-emitting diodes by using nanosphere arrays in color conversion layers
Authors: Pei-Kuen Wei
Yu-Hsuan Ho
Ding-Wei Huang
Yung-Ting Chang
Ya-Han Ye
Chih-Wei Chu
Wei-Cheng Tian
Chin-Ti Chen
Contributors: 國立臺灣海洋大學:光電科學研究所
Date: 2012-01
Issue Date: 2018-07-18T03:55:57Z
Publisher: OPTICS EXPRESS
Abstract: Abstract: The authors demonstrated an efficient color conversion layer (CCL) by using nanosphere arrays in down-converted white organic light-emitting diodes (WOLEDs). The introduced periodical nanospheres not only helped extract the confined light in devices, but also increased the effective light path to achieve high-efficiency color conversion. By applying a CCL with red phosphor on a 400-nm-period nanosphere array, we achieved 137% color conversion ratio for blue OLEDs, which was 2.68 times higher than conventional flat CCL. The resulting luminous efficiency of WOLEDs with patterned CCLs (20.97 cd/A, 1000 cd/m2) was two times higher than the efficiency of the flat device (10.26 cd/A, 1000 cd/m2).
Relation: 20(3) pp.3005-3014
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/47404
Appears in Collections:[光電科學研究所] 期刊論文

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