Enhanced electroluminescence and reduced efficiency roll-off in electrophosphorescent devices using a very high electron mobility material as emitter host and electron transporter

	Enhanced electroluminescence and reduced efficiency roll-off in electrophosphorescent devices using a very high electron mobility material as emitter host and electron transporter
其他题名	论文其他题名
	Li T. L.; Li W. L.; Chu B.; Su Z. S.; Chen Y. R.; Han L. L.; Zhang D. Y.; Li X.; Zang F. X.; Sum T. C.; Huan A. C. H.
	2009
发表期刊	Journal of Physics D-Applied Physics
ISSN	0022-3727
卷号	42 期号:6
摘要	We demonstrate markedly improved electroluminescence (EL) intensity and reduced external quantum efficiency (EQE) roll-off of a device which presents two emitting layers of fac-tris-(2-phenylpyridine) iridium [Ir(ppy)3] in 4,4'-bis(9-carbazolyl)-2,2'-biphenyl (CBP) and 1,3-bis[2-(2,2'-bipyridine-6-yl)-1,3,4-oxadiazo-5-yl]benzene (Bpy-OXD); 4,7-diphenyl-1,10-phenanthroline/Bpy-OXD layers were used as hole blocking and electron transport layers. The device exhibits a maximum EQE of 15.5% (corresponding to an efficiency of 56.8 cdA(-1)) at a luminance of 600 cd m(-2), which is twice the value (8.2%) of the reference diode using Ir(ppy) 3 doped CBP as a single emitting layer; the device still maintained a 6.5% efficiency at a luminance of 70 450 cd m(-2). The mechanism of this marked improvement in EL intensity and decrease in the EQE roll-off was also explored in detail.
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/24790
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Li T. L.,Li W. L.,Chu B.,et al. Enhanced electroluminescence and reduced efficiency roll-off in electrophosphorescent devices using a very high electron mobility material as emitter host and electron transporter[J]. Journal of Physics D-Applied Physics,2009,42(6).
APA	Li T. L..,Li W. L..,Chu B..,Su Z. S..,Chen Y. R..,...&Huan A. C. H..(2009).Enhanced electroluminescence and reduced efficiency roll-off in electrophosphorescent devices using a very high electron mobility material as emitter host and electron transporter.Journal of Physics D-Applied Physics,42(6).
MLA	Li T. L.,et al."Enhanced electroluminescence and reduced efficiency roll-off in electrophosphorescent devices using a very high electron mobility material as emitter host and electron transporter".Journal of Physics D-Applied Physics 42.6(2009).

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