文章基本信息

标题：Improved Performance of White Phosphorescent Organic Light-Emitting Diodes through a Mixed-Host Structure
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作者：Lee, Jong-Hee ; Lee, Jeong-Ik ; Chu, Hye-Yong 等
期刊名称：ETRI Journal
印刷版ISSN：1225-6463
电子版ISSN：2233-7326
出版年度：2009
卷号：31
期号：6
页码：642-646
DOI：10.4218/etrij.09.1209.0005
语种：English
出版社：Electronics and Telecommunications Research Institute
摘要：Highly efficient white phosphorescent organic light-emitting diodes with a mixed-host structure are developed and the device characteristics are studied. The introduction of a hole-transport-type host (N, N'-dicarbazolyl-3-3-benzen (mCP)) into an electron-transport-type host (m-bis-(triphenylsilyl)benzene (UGH3)) as a mixed-host emissive layer effectively achieves higher current density and lower driving voltage. The peak external quantum and power efficiency with the mixed-host structure improve up to 18.9% and 40.9 lm/W, respectively. Moreover, this mixed-host structure device shows over 30% enhanced performance compared with a single-host structure device at a luminance of 10,000 without any change in the electroluminescence spectra.
关键词：Organic light-emitting diodes (OLED);white OLED;phosphorescent;mixed-host structure