中国科学院光电技术研究所机构知识库
Advanced  
IOE OpenIR  > 光电技术研究所被WoS收录文章  > 期刊论文
题名:
Recombination region improvement for reduced efficiency roll-off in phosphorescent OLEDs with dual emissive layers
作者: Ma, Zhu1; Zhou, Shunliang1; Hu, Song2; Yu, Junsheng1
刊名: JOURNAL OF LUMINESCENCE
出版日期: 2014-10-01
卷号: 154, 页码:376-380
关键词: PhOLEDs ; Dual emissive layers ; Roll-off ; Ultrathin fluorescent probe ; Exciton formation zone
文章类型: Article
英文摘要: High-performance phosphorescent organic light-emitting diodes (PhOLEDs) by using dual-emissive-layer (DEL) structure to reduce efficiency roll-off were fabricated. The DEL was comprised of a hole-transport-type host of N, N'-bis(naphthalen-1-yl)-N, N'-bis(phenyl)-benzidine (NPB) and a bipolar host of 4,4'-bis(carbazol-9-yl)biphenyl (CBP), which were both doped with an orange phosphorescent dopant of bis[2-(4-tert-butylphenyl)-benzothiazolato-N,C2']iridium (acetylacetonate) [(t-bt)(2)Ir(acac)]. After the optimization of doping concentration of the first emissive layer (FEL), the device with DEL exhibited 11% lower roll-off power efficiency than single emissive layer devices (SED) when the luminance increased from 1000 cd/m(2) to 10,000 cd/m(2). The hole-electron recombination zone in DEL was illuminated by inserting an ultrathin fluorescent probe of 4-(dicyanomethylene)-2-tert-butyl-6 (1,1,7,7-tetramethyljulolidin-4-yl-vinyl)-4H-pyran (DCJTB) in different emissive regions. The performance improvement was attributed to the optimization of energy barrier and the expansion of exciton formation zone within the DEL. (C) 2014 Elsevier B.V. All rights reserved.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Optics
研究领域[WOS]: Optics
关键词[WOS]: LIGHT-EMITTING DEVICES ; IRIDIUM COMPLEXES ; STABILITY ; EXCITONS ; DIODES ; HOST
收录类别: SCI
语种: 英语
WOS记录号: WOS:000340687600060
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/2475
Appears in Collections:光电技术研究所被WoS收录文章_期刊论文

Files in This Item:

There are no files associated with this item.


作者单位: 1.Univ Elect Sci & Technol China, Sch Optoelect Informat, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Peoples R China
2.Chinese Acad Sci, Chengdu Inst Opt & Elect, Chengdu 610209, Peoples R China

Recommended Citation:
Ma, Zhu,Zhou, Shunliang,Hu, Song,et al. Recombination region improvement for reduced efficiency roll-off in phosphorescent OLEDs with dual emissive layers[J]. JOURNAL OF LUMINESCENCE,2014,154:376-380.
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Ma, Zhu]'s Articles
[Zhou, Shunliang]'s Articles
[Hu, Song]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Ma, Zhu]‘s Articles
[Zhou, Shunliang]‘s Articles
[Hu, Song]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2016  中国科学院光电技术研究所 - Feedback
Powered by CSpace