Constructing an n/n(+) homojunction in a monolithic perovskite film for boosting charge collection in inverted perovskite photovoltaics
文献类型：期刊论文
| 作者 | Lu, Yan-Na2; Zhong, Jun-Xing2; Yu, Yinye3,4; Chen, Xi2; Yao, Chan-Ying2; Zhang, Chengxi1,5; Yang, Meifang2; Feng, Wenhuai2; Jiang, Yong6; Tan, Ying2 |
| 刊名 | ENERGY & ENVIRONMENTAL SCIENCE
 |
| 出版日期 | 2021-05-17 |
| 页码 | 11 |
| ISSN号 | 1754-5692 |
| DOI | 10.1039/d1ee00918d |
| 通讯作者 | Zhou, Yecheng(zhouych29@mail.sysu.edu.cn) ; Wang, Lianzhou(wang@uq.edu.au) ; Wu, Wu-Qiang(wuwq36@mail.sysu.edu.cn) |
| 英文摘要 | The suboptimal carrier dynamics at the perovskite/electron transport layer has largely limited the further performance enhancement of the state-of-the-art inverted p-i-n structured perovskite solar cells. Herein, we discovered that a simple surface modification of the perovskite film by a trivalent metal halide salt, InBr3, could convert the doping levels of the top surface to be more n-type, which spontaneously formed an intriguing n/n(+) homojunction between the bulk (weak n type (n) component) and the surface (more n-type (n(+)) component) in a monolithic perovskite film. This brought about synergistic advantages of the enlarged built-in electric field for facilitated charge separation, as well as optimized electronic energy level alignment and minimized electron injection barrier at the perovskite/C-60 interface, leading to both accelerated charge extraction and suppressed interfacial charge recombination. Blade-coated inverted PSCs with n/n(+) homojunctions achieved a high power conversion efficiency (PCE) of up to 22.2%, narrowing the efficiency gap with their conventional n-i-p counterparts. The InBr3 surface treatment also improved the operational stability to >1000 hours under light with 93% initial efficiency retained. |
| 资助项目 | National Natural Science Foundation of China[22005355] ; Guangdong Basic and Applied Basic Research Foundation[2019A1515110770] ; ARC through its Discovery program |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000658409100001 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/13655]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Zhou, Yecheng; Wang, Lianzhou; Wu, Wu-Qiang |
| 作者单位 | 1.Univ Queensland, Australian Inst Bioengn & Nanotechnol, Brisbane, Qld 4072, Australia 2.Sun Yat Sen Univ, Sch Chem, Lehn Inst Funct Mat, MOE Key Lab Bioinorgan & Synthet Chem, Guangzhou 510275, Peoples R China 3.Sun Yat Sen Univ, Sch Mat Sci & Engn, Guangzhou 510275, Peoples R China 4.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Micronano Mfg & Syst Integrat Ctr, Chongqing 400714, Peoples R China 5.Univ Queensland, Sch Chem Engn, Nanomat Ctr, Brisbane, Qld 4072, Australia 6.Guangxi Univ Sci & Technol, Coll Biol & Chem Engn, Liuzhou 545006, Peoples R China 7.Sun Yat Sen Univ, Instrumental Anal Res Ctr, Guangzhou 510275, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu, Yan-Na,Zhong, Jun-Xing,Yu, Yinye,et al. Constructing an n/n(+) homojunction in a monolithic perovskite film for boosting charge collection in inverted perovskite photovoltaics[J]. ENERGY & ENVIRONMENTAL SCIENCE,2021:11. |
| APA | Lu, Yan-Na.,Zhong, Jun-Xing.,Yu, Yinye.,Chen, Xi.,Yao, Chan-Ying.,...&Wu, Wu-Qiang.(2021).Constructing an n/n(+) homojunction in a monolithic perovskite film for boosting charge collection in inverted perovskite photovoltaics.ENERGY & ENVIRONMENTAL SCIENCE,11. |
| MLA | Lu, Yan-Na,et al."Constructing an n/n(+) homojunction in a monolithic perovskite film for boosting charge collection in inverted perovskite photovoltaics".ENERGY & ENVIRONMENTAL SCIENCE (2021):11. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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