期刊
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
卷 69, 期 -, 页码 414-421出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2018.10.006
关键词
Organic light emitting diodes; White light source; Tandem structure; Scattering structure; Color stability; White organic light-emitting diode; White angular dependence; Optical resonance
资金
- Institute for Information & communications Technology Promotion (IITP) - Korea government (MSIT) [2018-0-00202]
- R&D program of Electronics and Telecommunications Research Institute (ETRI) [18ZB1270]
One drawback of white organic light-emitting diodes (WOLEDs) is the white angular dependence (WAD). Aimed to suppress the WAD of tandem WOLED to a negligible degree, we investigated the effect of optical resonance and probed various scattering structures. In a two-tandem configuration, the emissive layer physically remote from the reflective metal electrode is causing detrimental WAD. By combining an external nanoparticle based volumetric scattering film and an internal random nanostructure, it was possible to suppress the WAD of tandem WOLED to a value as low as 0.005, which is indistinguishable to human eyes. (C) 2018 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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