標題: Tunable microcavities in organic light-emitting diodes by way of low-refractive-index polymer doping
作者: Ling, An-Kai
Lin, Chun-Hao
Liang, Hsun
Chen, Fang-Chung
光電工程學系
顯示科技研究所
Department of Photonics
Institute of Display
關鍵字: Organic;Light-emitting;Microcavity;Refractive index;Resonant
公開日期: 1-十二月-2014
摘要: A method for enhancing the light out-coupling efficiency of organic light-emitting devices (OLEDs) has been demonstrated by blending a low-refractive-index polymer, poly(2,2,3,3,3-pentafluoropropyl methacrylate) (PPFPMA), into the emission layer. The resonant wavelength of the weak microcavity devices blueshifted accompanied with a decrease in refractive indices of the light-emitting layers after the addition of PPFPMA. Stronger directed emission toward the surface normal was obtained when the resonant wavelength became closer to the peak wavelength of intrinsic emission spectrum of the organic emitters. The luminous efficiency of the devices was enhanced by more than 20%. The results suggest that the microcavity properties of the OLEDs can be tunable through blending low-refractive-index materials. (C) 2014 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.orgel.2014.10.013
http://hdl.handle.net/11536/124120
ISSN: 1566-1199
DOI: 10.1016/j.orgel.2014.10.013
期刊: ORGANIC ELECTRONICS
Volume: 15
Issue: 12
起始頁: 3648
結束頁: 3653
顯示於類別:期刊論文


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  1. 000345649200033.pdf