Enhanced light out-coupling of organic light-emitting diode using metallic nanomesh electrodes and microlens array

被引：39
作者：
Ho, Yu-Hsuan [1 ,2 ]
Chen, Kuan-Yu [3 ]
Peng, Kai-Yu [1 ,4 ]
Tsai, Ming-Chih [1 ,5 ]
Tian, Wei-Cheng [2 ]
Wei, Pei-Kuen [1 ,5 ,6 ]
机构：
[1] Acad Sinica, Res Ctr Appl Sci, Taipei 115, Taiwan
[2] Natl Taiwan Univ, Grad Inst Elect Engn, Taipei 10617, Taiwan
[3] Natl Taiwan, Grad Inst Photon & Optoelect, Taipei, Taiwan
[4] Natl Taiwan, Dept Elect Engn, Taipei, Taiwan
[5] Natl Yang Ming Univ, Inst Biophoton, Taipei 112, Taiwan
[6] Natl Taiwan Ocean Univ, Dept Optoelect, Keelung, Taiwan
来源：
OPTICS EXPRESS | 2013年 / 21卷 / 07期
关键词：
ZINC-OXIDE FILMS; NANOSPHERE LITHOGRAPHY; TRANSPARENT; EFFICIENCY; DEVICES; EXTRACTION;
D O I：
10.1364/OE.21.008535
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A precisely controlled metallic nanomesh was fabricated by using nanosphere lithography to pattern the silver thin film to form hexagonal nanohole arrays with excellent uniformity, high conductivity and good transparency. An Alq(3) based OLED, with the silver nanomesh electrode of high ell factor of 70.2% demonstrated a considerable luminous efeciency of 4.8 cd/A, which is 60.9% higher than the referenced device with ITO anode. The periodical nanohole array not only increased the transparency but also helped extracting surface plasmonic wave in organic layers. By attaching the microlens array to further extract the trapped light in substrate, the extraction efficiency enhancement of device with nanomesh anode was 73.8% higher than 50.2% of the referenced device with ITO anode. And the overall current efficiency of device with nanomesh anode was 87.7% higher than traditional ITO based device. (C) 2013 Optical Society of America
引用
收藏
页码：8535 / 8543
页数：9
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