Recombination region improvement for reduced efficiency roll-off in phosphorescent OLEDs with dual emissive layers
文献类型：期刊论文
| 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 |
| 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 |
| 公开日期 | 2015-12-24 |
| 源URL | [http://ir.ioe.ac.cn/handle/181551/2475]  |
| 专题 | 光电技术研究所_光电技术研究所被WoS收录文章 |
| 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 |
| 推荐引用方式 GB/T 7714 | 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. |
| APA | Ma, Zhu,Zhou, Shunliang,Hu, Song,&Yu, Junsheng.(2014).Recombination region improvement for reduced efficiency roll-off in phosphorescent OLEDs with dual emissive layers.JOURNAL OF LUMINESCENCE,154,376-380. |
| MLA | Ma, Zhu,et al."Recombination region improvement for reduced efficiency roll-off in phosphorescent OLEDs with dual emissive layers".JOURNAL OF LUMINESCENCE 154(2014):376-380. |
入库方式： OAI收割
来源：光电技术研究所
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