Triplet to singlet transition induced low efficiency roll-off in green phosphorescent organic light-emitting diodes

	Triplet to singlet transition induced low efficiency roll-off in green phosphorescent organic light-emitting diodes
其他题名	论文其他题名
	Su Z. S.; Li W. L.; Chu B.; Wu S. H.
	2011
发表期刊	Thin Solid Films
ISSN	0040-6090
卷号	519 期号:8 页码:2540-2543
摘要	Phosphorescent organic light-emitting diodes (PHOLEDs) with an emitting layer of 4,4'-N,N'-dicarbazole-biphenyl codoped with phosphor fac-tri(phenylpyridine)iridium(III) [Ir(ppy)(3)] and fluorophore N,N'-dimethy-quinacridone (DMQA) are investigated. Predominant emission from DMQA due to the efficient energy transfer from Ir(ppy)(3) to DMQA is observed. Such an energy transfer results in the transition of Ir(ppy)(3) triplet to DMQA singlet, which reduces the Ir(ppy)(3) exciton lifetime and hence suppresses the triplet-triplet annihilation and triplet-polaron annihilation of Ir(ppy)(3) excitons, leading to dramatical reduction of the efficiency roll-off of the PHOLEDs. This transition of triplet to singlet strategy provides a method to improve the efficiency roll-off of the PHOLEDs. (C) 2010 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/181722/26062
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.,et al. Triplet to singlet transition induced low efficiency roll-off in green phosphorescent organic light-emitting diodes[J]. Thin Solid Films,2011,519(8):2540-2543.
APA	Su Z. S.,Li W. L.,Chu B.,&Wu S. H..(2011).Triplet to singlet transition induced low efficiency roll-off in green phosphorescent organic light-emitting diodes.Thin Solid Films,519(8),2540-2543.
MLA	Su Z. S.,et al."Triplet to singlet transition induced low efficiency roll-off in green phosphorescent organic light-emitting diodes".Thin Solid Films 519.8(2011):2540-2543.

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