Unraveling the Energy Landscape and Energy Funneling Modulated by Hole Transport Layer for Highly Efficient Perovskite LEDs
文献类型：期刊论文
| 作者 | Li, Ting3; Xiang, Ting3; Wang, Miaosheng4; Zhang, Wei1 ; Shi, Jishan5; Shao, Ming5; Xu, Tianfei3; Ahmadi, Mahshid4; Wu, Xiaoyan2; Gao, Zhao2
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| 刊名 | LASER & PHOTONICS REVIEWS
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| 出版日期 | 2021-02-01 |
| 页码 | 10 |
| ISSN号 | 1863-8880 |
| 关键词 | energy funneling energy landscape hole transport layer n domain distribution quasi-2D perovskite light-emitting diodes |
| DOI | 10.1002/lpor.202000495 |
| 通讯作者 | Zhang, Wei(zhangwei@cigit.ac.cn) ; Wu, Xiaoyan(wuxiaoyan1219@sina.cn) ; Chen, Ping(pingchen@swu.edu.cn) |
| 英文摘要 | Previous reports have demonstrated significant effects of hole transport layer (HTL) on the morphology of quasi-2 dimensional (2D) perovskites, hole injection, and interfacial defect density. However, the effects of HTL on energy landscape and energy funneling of quasi-2D perovskites have not been revealed so far. Herein, the PEA(2)Cs(n-1)Pb(n)Br(3n+1) perovskite films are fabricated on four types of HTLs including poly(9-vinylcarbazole):poly(ethylene oxide) (PVK:PEO), PVK, poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS), and nickel oxide (NiOx). The steady-state and transient absorption spectroscopies reveal that the energy landscape and energy funneling of quasi-2D perovskites vary significantly on different HTLs. All domains with n = 1, 2, 3, and higher order (n >= 4) are formed with desired population ratios on the PVK:PEO HTL, leading to the most efficient energy funneling. Furthermore, the interfacial passivation effect of PEO on the energy funneling process is studied. The light-emitting diodes (LEDs) based on PEA(2)Cs(n-1)Pb(n)Br(3n+1) and PVK:PEO (with an optimized ratio of 5.3:0.7 w/w) HTL result in a maximum luminescence of approximate to 23 110 cd m(-2) and maximum external quantum efficiency of approximate to 11.5%, respectively. This is the best performance reported so far using pure PEA(2)Cs(n-1)Pb(n)Br(3n+1) without perovskite composition modifications. This study provides new insights into the HTL for the development of highly efficient quasi-2D perovskite LEDs. |
| 资助项目 | Fundamental Research Funds for the Natural Science Foundation Project of CQ CSTC[cstc2019jcyj-msxmX0015] ; Chongqing Talents Program[CQYC201905041] ; National Natural Science Foundation of China[21805262] ; Graduate Student Research Innovation Project of Chongqing[CYS20102] |
| WOS研究方向 | Optics ; Physics |
| 语种 | 英语 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| WOS记录号 | WOS:000613219500001 |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/12784]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Zhang, Wei; Wu, Xiaoyan; Chen, Ping |
| 作者单位 | 1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 2.China Acad Engn Phys, Inst Fluid Phys, Key Lab Sci & Technol High Energy Laser, Mianyang 621900, Sichuan, Peoples R China 3.Southwest Univ, Sch Phys Sci & Technol, Chongqing 400715, Peoples R China 4.Univ Tennessee, Dept Mat Sci & Engn, Joint Inst Adv Mat, Knoxville, TN 37996 USA 5.Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Ting,Xiang, Ting,Wang, Miaosheng,et al. Unraveling the Energy Landscape and Energy Funneling Modulated by Hole Transport Layer for Highly Efficient Perovskite LEDs[J]. LASER & PHOTONICS REVIEWS,2021:10. |
| APA | Li, Ting.,Xiang, Ting.,Wang, Miaosheng.,Zhang, Wei.,Shi, Jishan.,...&Chen, Ping.(2021).Unraveling the Energy Landscape and Energy Funneling Modulated by Hole Transport Layer for Highly Efficient Perovskite LEDs.LASER & PHOTONICS REVIEWS,10. |
| MLA | Li, Ting,et al."Unraveling the Energy Landscape and Energy Funneling Modulated by Hole Transport Layer for Highly Efficient Perovskite LEDs".LASER & PHOTONICS REVIEWS (2021):10. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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