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http://dx.doi.org/10.4313/JKEM.2015.28.7.446

A Study on the Improvement of Light-Extraction Efficiency of Organic Light-Emitting Diodes with a Use of Random-Textured Film  

Kim, Hye Sook (Department of Information Display Engineering, Hongik University)
Hwang, Deok Hyeon (Department of Information Display Engineering, Hongik University)
Jang, Kyeong Uk (Department of Electrical Engineering, Gachon University)
Kim, Tae Wan (Department of Information Display Engineering, Hongik University)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.28, no.7, 2015 , pp. 446-449 More about this Journal
Abstract
An improvement of light-extraction efficiency of organic light-emitting diodes was studied by using random-textured films (RTF). Device was made in a structure of RTF/glass/ITO/TPD/$Alq_3$/LiF/Al. RTF mold was made by spreading PDMS solution on a sandpaper. By pressing this mold on the glass substrate pre-coated with ZPU material, the RTF was obtained. From this study, there was an improvement of external quantum efficiency by about 30% in the device with the random-textured film (RTF 40) compared to that of the reference one.
Keywords
Organic light-emitting diodes; Random-textured film; Light-extraction efficiency;
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Times Cited By KSCI : 1  (Citation Analysis)
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