12-Crown-4 ether assisted in-situ grown perovskite crystals for ambient stable light emitting diodes
文献类型：期刊论文
| 作者 | Xiang, Ting3; Li, Ting3; Wang, Miaosheng1; Zhang, Wei4 ; Ahmadi, Mahshid1; Wu, Xiaoyan2; Xu, Tianfei3; Xiao, Meiqin3; Xu, Long3; Chen, Ping3
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| 刊名 | NANO ENERGY
 |
| 出版日期 | 2022-05-01 |
| 卷号 | 95页码:13 |
| ISSN号 | 2211-2855 |
| 关键词 | Coordination rate Flat energy structure Thick PbBr4 layers Crown-ether Quassi-2D perovskite |
| DOI | 10.1016/j.nanoen.2022.107000 |
| 通讯作者 | Zhang, Wei(andyzhangwei@163.com) ; Wu, Xiaoyan(wuxiaoyan1219@sina.cn) ; Chen, Ping(pingchen@swu.edu.cn) |
| 英文摘要 | It is always difficult to control the growth of crystals during the formation of multiple quantum wells (MQWs) in the quasi-2D perovskite light emitting diodes (PeLEDs). In this study, we introduce the 1, 4, 7, 10-tetraoxacyclododecane ether into the quasi-2D perovskite of PEA(2)Cs(n-1)PbnBr(3n+1) to reduce the coordination rate between the phenethylamine bromide and the perovskite framework. As a result, Crown-ether assisted in-situ grown (CAIG) perovskite crystals (PCs) is grown with thick PbBr4 layers (n > 55) during the spin-coating. For the CAIG PCs, the generation of small n phases (n = 1, 2 and 3) are significantly suppressed, resulting in almost flat energy structure with the phases of n >= 4. The generation rate of the excited states of the n >= 4 remains ultra-fast within-0.77 ps even without the MQWs structures; however the decay of excited states becomes much slower. The CAIG PCs film has lower trap density, therefore promoting the carrier mobility, carrier diffusion length and the photoluminescence quantum yield. The PeLEDs based on the CAIG PCs film achieves the maximum luminescence of -27562 cd m(-2) and the maximum external quantum efficiency (EQE) of-16.1%. The half-lifetime of the luminescence and the EQE measured in the atmosphere (a relative humidity of-52% at 27 ?) are exceeding-17 and 43 h, respectively. Hence, it can be recognized as the most ambient stable device based on the PEA(2)Cs(n-1)PbnBr(3n+1) perovskite. |
| 资助项目 | Natural Science Foundation Project of CQ CSTC[cstc2019jcyj-msxmX0015] ; Natural Science Foundation of Chongqing China[cstc2021jcyj-jqX0031] ; Chongqing Talents: Exceptional Young Talents Project[CQYC201905041] |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000782282100003 |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/15569]  |
| 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.Univ Tennessee, Inst Adv Mat & Mfg, Dept Mat Sci & Engn, Knoxville, TN 37996 USA 2.China Acad Engn Phys, Inst Fluid Phys, Key Lab Sci & Technol High Energy Laser, Mianyang 621900, Peoples R China 3.Southwest Univ, Sch Phys Sci & Technol, Chongqing key Lab Micro &Nano Struct Optoelect, Chongqing 400715, Peoples R China 4.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China |
| 推荐引用方式 GB/T 7714 |
Xiang, Ting,Li, Ting,Wang, Miaosheng,et al. 12-Crown-4 ether assisted in-situ grown perovskite crystals for ambient stable light emitting diodes [J]. NANO ENERGY,2022,95:13. |
| APA |
Xiang, Ting.,Li, Ting.,Wang, Miaosheng.,Zhang, Wei.,Ahmadi, Mahshid.,...&Chen, Ping.(2022). 12-Crown-4 ether assisted in-situ grown perovskite crystals for ambient stable light emitting diodes .NANO ENERGY,95,13. |
| MLA |
Xiang, Ting,et al." 12-Crown-4 ether assisted in-situ grown perovskite crystals for ambient stable light emitting diodes ".NANO ENERGY 95(2022):13. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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