期刊
ORGANIC ELECTRONICS
卷 11, 期 2, 页码 179-183出版社
ELSEVIER
DOI: 10.1016/j.orgel.2009.10.010
关键词
Red; Single layer; Phosphorescent; OLED
资金
- Korean government
- Korea Evaluation Institute of Industrial Technology (KEIT) [20094010100080] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [핵06A3701] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
We report simple red phosphorescent devices comprising single layer configuration using a tris[1-phenylisoqunolinato-C2,N] iridium (III) (Ir(piq)(3)) dopant concentration as low as 1 wt.% in mixed host systems. The driving voltage of 5.4 V to reach the brightness of 1000 cd/m(2) in the mixed emitting layer of N,N'-diphenyl-N,N'-bis(1,1'-biphenyl)-4,4'-diamine (NPB) and bis(10-hydroxybenzo[h]quinolinato)beryllium (Bebq(2)) is reported. Maximum current and power efficiency values of 9.44 cd/A and 10.62 lm/W are obtained in this single layer structure PHOLEDs, respectively. It is believed that the direct injection of charge carriers to the organic layer and high carrier mobility therein are the keys to the simplification of the device structure. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.
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