Efficient blue-green and green electroluminescent devices obtained by doping iridium complexes into hole-block material as supplementary light-emitting layer

	Efficient blue-green and green electroluminescent devices obtained by doping iridium complexes into hole-block material as supplementary light-emitting layer
	Zhou, Liang ; Zheng, Youxuan ; Deng, Ruiping ; Feng,Jing ; Song,Mingxing ; Hao,Zhaomin ; Zhang,Hongjie ; Zuo,Jinglin ; You,Xiaozeng
刊名	journal of luminescence
	2014
卷号	148 期号:22 页码:6-9
关键词	INTERNAL QUANTUM EFFICIENCY PHOSPHORESCENT OLEDS DIODES MOLECULES EXCITONS DOPANT HOST
通讯作者	zheng,yx
英文摘要	in this work, organic electroluminescent (el) devices with dominant and supplementary light-emitting layers (emls) were designed to further improve the el performances of two iridium(iii)-based phosphorescent complexes, which have been reported to provide el devices with slow el efficiency roll-off. the widely used hole-block material 2,2',2 ''-(1,3,5-benzinetriyl)-tris(1-phenyl-1-h-benzimidazole) (tpbi) was selected as host material to construct the supplementary evil. compared with single-eml devices, double-emls devices showed higher el efficiencies, higher brightness, and lower operation voltage attributed to wider recombination zone and better balance of carriers. in addition, the insertion of supplementary evil is instrumental in facilitating carriers trapping, thus improving the color purity. finally, high performance blue-green and green el devices with maximum current efficiencies of 35.22 and 90.68 cd/a, maximum power efficiencies of 26.36 and 98.18 lm/w, and maximum brightness of 56,678 and 112,352 cd/m(2), respectively, were obtained by optimizing the doping concentrations. such a device design strategy extends the application of a double eml device structure and provides a chance to simplify device fabrication processes. (c) 2013 elsevier by all rights reserved.
收录类别	SCI
语种	英语
WOS记录号	WOS:000337516000002
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/57400]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Zhou, Liang,Zheng, Youxuan,Deng, Ruiping,et al. Efficient blue-green and green electroluminescent devices obtained by doping iridium complexes into hole-block material as supplementary light-emitting layer[J]. journal of luminescence,2014,148(22):6-9.
APA	Zhou, Liang.,Zheng, Youxuan.,Deng, Ruiping.,Feng,Jing.,Song,Mingxing.,...&You,Xiaozeng.(2014).Efficient blue-green and green electroluminescent devices obtained by doping iridium complexes into hole-block material as supplementary light-emitting layer.journal of luminescence,148(22),6-9.
MLA	Zhou, Liang,et al."Efficient blue-green and green electroluminescent devices obtained by doping iridium complexes into hole-block material as supplementary light-emitting layer".journal of luminescence 148.22(2014):6-9.