An efficient dual-emissive-layer white organic light emitting-diode: Insight into device working mechanism and origin of color-shift

	An efficient dual-emissive-layer white organic light emitting-diode: Insight into device working mechanism and origin of color-shift
	Wang, Qi 1,2; Ma, Dongge 1; Ding, Junqiao 1; Wang, Lixiang 1; Qiao, Qiquan 2; Jia, Huiping 3; Gnade, Bruce E.3; Hoshikawa-Halbert, Jason 4
刊名	ORGANIC ELECTRONICS
	2015-04-01
卷号	19 页码:157-162
关键词	White organic light-emitting diode Phosphorescence Color-shift Charge transport
英文摘要	By using a single host for both blue and orange phosphorescent dopants, a simple and efficient white organic light emitting-diode is reported. The dual-emissive-layer white device achieves a peak external quantum efficiency of 16.9 +/- 0.9% and power efficiency of 44.1 +/- 2.3 lm/W without out-coupling enhancement. Analysis of the device working mechanism determines that the blue dopant molecules can form a bridge to facilitate electron transport into the adjacent orange emitting-layer. The orange emission originates from both the direct electron trapping by the orange dopant and incomplete blue-orange energy transfer mechanisms. The origin of the voltage-dependent color shift of the device is quantitatively determined according to the working mechanism. Possible solution to reducing the color-shift is also provided based on the calculation and analytical results. (C) 2015 Elsevier B.V. All rights reserved.
收录类别	SCI
语种	英语
公开日期	2015-11-02
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/28289]
专题	化学研究所_高分子物理与化学实验室
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Jilin, Peoples R China 2.S Dakota State Univ, Coll Engn, Dept Elect Engn & Comp Sci, Brookings, SD 57007 USA 3.Univ Texas Dallas, Erik Jonsson Sch Engn & Comp Sci, Dept Mat Sci & Engn, Richardson, TX 75083 USA 4.Kyoto Univ Katsura, Dept Synthet Chem & Biol Chem, Nishikyo Ku, Kyoto 6158510, Japan
推荐引用方式 GB/T 7714	Wang, Qi,Ma, Dongge,Ding, Junqiao,et al. An efficient dual-emissive-layer white organic light emitting-diode: Insight into device working mechanism and origin of color-shift[J]. ORGANIC ELECTRONICS,2015,19:157-162.
APA	Wang, Qi.,Ma, Dongge.,Ding, Junqiao.,Wang, Lixiang.,Qiao, Qiquan.,...&Hoshikawa-Halbert, Jason.(2015).An efficient dual-emissive-layer white organic light emitting-diode: Insight into device working mechanism and origin of color-shift.ORGANIC ELECTRONICS,19,157-162.
MLA	Wang, Qi,et al."An efficient dual-emissive-layer white organic light emitting-diode: Insight into device working mechanism and origin of color-shift".ORGANIC ELECTRONICS 19(2015):157-162.