Dual-periodic-microstructure-induced color tunable white organic light-emitting devices

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• 作者：Yangang Bi ; Jinhai Ji ; Yang Chen ; Yushan Liu ; Xulin Zhang…
• 关键词：dual periodic grating ; surface plasmon ; polariton (SPP) ; color tunable ; white organic light ; emitting devices (WOLEDs)
• 刊名：Frontiers of Optoelectronics in China
• 出版年：2016
• 出版时间：June 2016
• 年：2016
• 卷：9
• 期：2
• 页码：283-289
• 全文大小：1,039 KB
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• 作者单位：Yangang Bi (1)
  Jinhai Ji (1)
  Yang Chen (1)
  Yushan Liu (1)
  Xulin Zhang (1)
  Yunfei Li (1)
  Ming Xu (1)
  Yuefeng Liu (1)
  Xiaochi Han (1)
  Qiang Gao (1)
  Hongbo Sun (1) (2)
  
  1. State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China
  2. College of Physics, Jilin University, Changchun, 130023, China
  
• 刊物类别：Engineering
• 刊物主题：Electronic and Computer Engineering
  Electromagnetism, Optics and Lasers
  Biomedical Engineering
  Chinese Library of Science
  
• 出版者：Higher Education Press, co-published with Springer-Verlag GmbH
• ISSN：2095-2767

文摘

In this paper, we demonstrate a color tunable white organic light-emitting devices (WOLEDs) based on the two complementary color strategies by introducing two-dimensional (2-D) dual periodic gratings. It is possible to tune the color in a range between cold-white and warm-white by simply operating the polarization of polarizer in front of the microstructured WOLEDs. Experimental and numerical results demonstrate that color tunability of the WOLEDs comes from the effect of the 2-D dual periodic gratings by exciting the surface plasmon-polariton (SPP) resonance associated with the cathode/organic interface. The electroluminescence (EL) performance of the WOLEDs have also been improved due to the effective light extraction by excitation and out-coupling of the SPP modes, and a 39.65% enhancement of current efficiency has been obtained compared to the conventional planar devices.