Improved light outcoupling of organic light-emitting diodes by randomly embossed nanostructure

被引：7
作者：
Zhu, Yuanli [1 ]
Hao, Yuying [1 ]
Yuan, Shuqing [1 ]
Zhang, Fan [1 ]
Miao, Yanqin [2 ]
Cui, Yanxia [1 ]
Li, Zhanfeng [1 ]
Wang, Hua [2 ]
Xu, Bingshe [2 ]
机构：
[1] Taiyuan Univ Technol, Coll Phys & Optoelect, Minist Educ, Key Lab Adv Transducers & Intelligent Control Sys, Taiyuan 030024, Peoples R China
[2] Taiyuan Univ Technol, ICey Lab Interface Sci & Engn Adv Mat, Taiyuan 030024, Peoples R China
来源：
SYNTHETIC METALS | 2015年 / 203卷
基金：
对外科技合作项目（国际科技项目）;
关键词：
Organic light emitting diode; Outcoupling efficiency; Waveguide modes; Surface plasmon polaritons; Randomly embossed structure; TRAPPED OPTICAL MODES; EFFICIENCY; EXTRACTION; DEVICES; LIFETIME;
D O I：
10.1016/j.synthmet.2015.01.025
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, we proposed a very economical and simple method to fabricate the randomly structured organic light emitting diode (OLED) to enhance light outcoupling efficiency. The random pattern is obtained by directly spin-coating the mixture solution of polystyrene (PS) nanospheres and PEDOT:PSS on an ITO/glass substrate and then removing PS nanospheres. The results demonstrate that using such a randomly embossed PEDOT:PSS as the hole injection layer in Alq(3)-based OLED produces the maximum current efficiency of 3.34 cd/A with the enhancement factor of 18.0% and the maximum power efficiency of 2.161m/W with the enhancement factor of 67.9% compared with the typical planar Alq(3)-based OLED (with no PEDOT:PSS layer). On one hand, the enhanced efficiency is associated with the enhanced injection/transport of holes. On the other hand, the enhanced efficiency is also attributed to the extraction of some trapped optical modes over a broad range of wavelengths. This work offers a promising method for the fabrication of high performance, low-cost and large area OLEDs. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：200 / 207
页数：8
相关论文
共 36 条
[1]   Corrugated organic light emitting diodes for enhanced light extraction [J].
Altun, Ali Ozhan ;
Jeon, Sohee ;
Shim, Jongyoup ;
Jeong, Jun-Ho ;
Choi, Dae-Geun ;
Kim, Ki-Don ;
Choi, Jun-Hyuk ;
Lee, Soon-Won ;
Lee, Eung-Sug ;
Park, Hyung-Dol ;
Youn, Jae R. ;
Kim, Jang-Joo ;
Lee, Yong-Hee ;
Kang, Jae-Wook .
ORGANIC ELECTRONICS, 2010, 11 (05) :711-716
[2]   Outcoupling of trapped optical modes in organic light-emitting devices with one-step fabricated periodic corrugation by laser ablation [J].
Bai, Yu ;
Feng, Jing ;
Liu, Yue-Feng ;
Song, Jun-Feng ;
Simonen, Janne ;
Jin, Yu ;
Chen, Qi-Dai ;
Zi, Jian ;
Sun, Hong-Bo .
ORGANIC ELECTRONICS, 2011, 12 (11) :1927-1935
[3]   Device efficiency of organic light-emitting diodes: Progress by improved light outcoupling [J].
Bruetting, Wolfgang ;
Frischeisen, Joerg ;
Schmidt, Tobias D. ;
Scholz, Bert J. ;
Mayr, Christian .
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 2013, 210 (01) :44-65
[4]   Improved light extraction efficiency in organic light emitting diodes with a perforated WO3 hole injection layer fabricated by use of colloidal lithography [J].
Choi, Chung Sock ;
Lee, Sung-Min ;
Lim, Myung Sub ;
Choi, Kyung Cheol ;
Kim, Donghyuk ;
Jeon, Duk Young ;
Yang, Youngjo ;
Park, O. Ok .
OPTICS EXPRESS, 2012, 20 (06) :A309-A318
[5]  
Chutinan A., 2005, ORG ELECT, V6
[6]   Strategies for light extraction from surface plasmons in organic light-emitting diodes [J].
Frischeisen, Joerg ;
Scholz, Bert J. ;
Arndt, Benedikt J. ;
Schmidt, Tobias D. ;
Gehlhaar, Robert ;
Adachi, Chihaya ;
Bruetting, Wolfgang .
JOURNAL OF PHOTONICS FOR ENERGY, 2011, 1
[7]   Increased light outcoupling efficiency in dye-doped small molecule organic light-emitting diodes with horizontally oriented emitters [J].
Frischeisen, Joerg ;
Yokoyama, Daisuke ;
Endo, Ayataka ;
Adachi, Chihaya ;
Bruetting, Wolfgang .
ORGANIC ELECTRONICS, 2011, 12 (05) :809-817
[8]   Light extraction from surface plasmons and waveguide modes in an organic light-emitting layer by nanoimprinted gratings [J].
Frischeisen, Joerg ;
Niu, Quan ;
Abdellah, Alaa ;
Kinzel, Joerg B. ;
Gehlhaar, Robert ;
Scarpa, Giuseppe ;
Adachi, Chihaya ;
Lugli, Paolo ;
Bruetting, Wolfgang .
OPTICS EXPRESS, 2011, 19 (01) :A7-A19
[9]   Enhancement of normally directed light outcoupilng from organic light-emitting diodes using nanoimprinted low-refractive-index layer [J].
Jeong, Soon Moon ;
Araoka, Fumito ;
Machida, Yoshimi ;
Ishikawa, Ken ;
Takezoe, Hideo ;
Nishimura, Suzushi ;
Suzaki, Goro .
APPLIED PHYSICS LETTERS, 2008, 92 (08)
[10]   Solving Efficiency-Stability Tradeoff in Top-Emitting Organic Light-Emitting Devices by Employing Periodically Corrugated Metallic Cathode [J].
Jin, Yu ;
Feng, Jing ;
Zhang, Xu-Lin ;
Bi, Yan-Gang ;
Bai, Yu ;
Chen, Lu ;
Lan, Tian ;
Liu, Yue-Feng ;
Chen, Qi-Dai ;
Sun, Hong-Bo .
ADVANCED MATERIALS, 2012, 24 (09) :1187-1191
1234