Enhanced efficiency in mixed host red electrophosphorescence devices

	Enhanced efficiency in mixed host red electrophosphorescence devices
其他题名	论文其他题名
	Su Z. S.; Li W. L.; Chu B.
	2011
发表期刊	Thin Solid Films
ISSN	0040-6090
卷号	519 期号:16 页码:5634-5637
摘要	Enhanced efficiency of red phosphorescent organic light-emitting devices is observed by using a bis[2-(2'-benzothienyl)pyridinato-N,C(3')] iridium(acetylacetonato) doped 4,4'-N,N'-dicarbazole-biphenyl (CBP) and 1,3,5-tris(N-phenylbenzimidazole-2-yl)benzene (TPBI) mixed host emitting layer. The CBP:TPBI mixed host device shows a maximum external quantum efficiency of 9.1%, which is dramatically improved compared to that of the CBP (6.6%) and TPBI (5.4%) single host devices. Such a mixed host strategy can also be exploited in red phosphor dibenzo[f,h]quinoxaline iridium (acetylacetonate) doped devices. Investigations reveal that the position of charge carrier recombination zone of the mixed host devices predominantly locates in the electron blocking layer/emitting layer interface. The efficiency enhancement is attributed to the optimized hole and electron injection balance and hence increased charge carrier recombination rate in the emitting layer. (C) 2011 Elsevier B.V. All rights reserved.
收录类别	SCI ; EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/26084
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Su Z. S.,Li W. L.,Chu B.. Enhanced efficiency in mixed host red electrophosphorescence devices[J]. Thin Solid Films,2011,519(16):5634-5637.
APA	Su Z. S.,Li W. L.,&Chu B..(2011).Enhanced efficiency in mixed host red electrophosphorescence devices.Thin Solid Films,519(16),5634-5637.
MLA	Su Z. S.,et al."Enhanced efficiency in mixed host red electrophosphorescence devices".Thin Solid Films 519.16(2011):5634-5637.

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