Highly efficient and stable tandem organic light-emitting devices based on HAT-CN/HAT-CN:TAPC/TAPC as a charge generation layer

	Highly efficient and stable tandem organic light-emitting devices based on HAT-CN/HAT-CN:TAPC/TAPC as a charge generation layer
	Dai,Yanfeng; Zhang,Hongmei; Zhang,Zhiqiang; Liu,Yipeng; Chen,Jiangshan; Ma,Dongge
刊名	journal of materials chemistry c
	2015
卷号	3 期号:26 页码:6809-6814
关键词	HOLE-INJECTING LAYER ELECTROLUMINESCENT DEVICES DIODES ARCHITECTURE
通讯作者	ma,dg
英文摘要	we demonstrated an effective charge-generation layer (cgl) composition consisting of three layers: an organic acceptor material 1,4,5,8,9,11-hexaazatriphenylene hexacarbonitrile (hat-cn), hat-cn blended with an organic donor material 4,4'-cyclohexylidenebis[n,n-bis(4-methylphenyl) benzenamine] (tapc) and tapc, to fabricate a high efficiency tandem organic light-emitting diode (oled). the utilization of the hat-cn: tapc blending layer between hat-cn and tapc in a cgl greatly enhances charge generation and separation, which was found by carrying out current-voltage analyses. this means that the three-layer structure is more suitable as a connecting unit for the fabrication of high efficiency tandem oleds. clearly, the tandem oleds based on hat-cn/hat-cn:tapc/tapc as cgl showed more than double enhancement in current efficiency with respect to the corresponding single-unit device, which is also higher than that of tandem oleds with hat-cn/tapc as cgl. more encouragingly, the power efficiency of tandem oleds with the new cgl was enhanced by about 1.3-1.5 times, reaching 113 lm w-1 at 1000 cd m(-2) brightness as compared to 76 lm w-1 from the single-unit oleds and 86 lm w-1 from the hat-cn/tapc-based tandem oleds. the tandem oleds with the new cgl also showed good stability, at least enhancing 4.5 times compared with the single unit devices. furthermore, three-unit tandem oleds based on this new cgl were also fabricated. the maximum current efficiency reached 286 cd a(-1) and was maintained at 266 cd a(-1) at a luminance of 10 000 cd m(-2).
收录类别	SCI
语种	英语
公开日期	2016-05-31
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/65104]
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	Dai,Yanfeng,Zhang,Hongmei,Zhang,Zhiqiang,et al. Highly efficient and stable tandem organic light-emitting devices based on HAT-CN/HAT-CN:TAPC/TAPC as a charge generation layer[J]. journal of materials chemistry c,2015,3(26):6809-6814.
APA	Dai,Yanfeng,Zhang,Hongmei,Zhang,Zhiqiang,Liu,Yipeng,Chen,Jiangshan,&Ma,Dongge.(2015).Highly efficient and stable tandem organic light-emitting devices based on HAT-CN/HAT-CN:TAPC/TAPC as a charge generation layer.journal of materials chemistry c,3(26),6809-6814.
MLA	Dai,Yanfeng,et al."Highly efficient and stable tandem organic light-emitting devices based on HAT-CN/HAT-CN:TAPC/TAPC as a charge generation layer".journal of materials chemistry c 3.26(2015):6809-6814.