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Highly efficient tandem organic light-emitting diodes based on SubPc:C60 bulk heterojunction as charge generation layer
Ma, Zhu1; Liu, Shengqiang1; Hu, Song2; Yu, Junsheng1
2016
发表期刊Journal of Luminescence
ISSN0022-2313
卷号169页码:29-34
文章类型J
摘要High efficiency tandem organic light-emitting diodes (OLEDs) were realized using an organic bulk heterojunction (BHJ) as charge generation layer (CGL) consisted of boron subphthalocyanine chloride (SubPc) and fullerene (C60). The results showed that the SubPc:C60 based CGL is a promising connecting unit for the fabrication of high efficiency tandem OLEDs with 2.64 folds enhancement in a current efficiency of 63.6 cd/A, compare to the corresponding single-unit OLEDs. The efficiency enhancement of tandem OLEDs is attributed to better charge carrier balance derived from the optimized charge transport pathways and reduced interface energy barrier. It showed that the charge generation ability and charge transport characteristics of CGL were strongly dependent on SubPc:C60 mixing ratio and corresponding film morphology, which was verified by the charge extracting analysis. Additionally, the highest occupied molecular orbital energy level of SubPc is compatible for most of hole transporting layer to minimize the hole injection barrier and suppress the hole accumulation and charge recombination in tandem OLEDs. © 2015 Elsevier B.V. All rights reserved.
关键词Carrier Transport Charge Injection Charge Transfer Diodes Energy Efficiency Heterojunctions Light Emitting Diodes Molecular Orbitals
DOI10.1016/j.jlumin.2015.08.040
收录类别SCI ; Ei
语种英语
项目资助者Foundation of the National Natural Science Foundation of China (NSFC) [61177032] ; Foundation for Innovation Research Groups of the NSFC [61421001]
WOS记录号WOS:000365604700005
引用统计
被引频次:14[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ioe.ac.cn/handle/181551/8498
专题微电子装备总体研究室(四室)
作者单位1. State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China (UESTC), Chengdu, China
2. Chengdu Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, China
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Ma, Zhu,Liu, Shengqiang,Hu, Song,et al. Highly efficient tandem organic light-emitting diodes based on SubPc:C60 bulk heterojunction as charge generation layer[J]. Journal of Luminescence,2016,169:29-34.
APA Ma, Zhu,Liu, Shengqiang,Hu, Song,&Yu, Junsheng.(2016).Highly efficient tandem organic light-emitting diodes based on SubPc:C60 bulk heterojunction as charge generation layer.Journal of Luminescence,169,29-34.
MLA Ma, Zhu,et al."Highly efficient tandem organic light-emitting diodes based on SubPc:C60 bulk heterojunction as charge generation layer".Journal of Luminescence 169(2016):29-34.
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