中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 合肥物质科学研究院
  3. 中国科学院合肥物质科学研究院
Passivation effect of halogenated benzylammonium as a second spacer cation for improved photovoltaic performance of quasi-2D perovskite solar cells

文献类型：期刊论文

作者Liu, Guozhen1,4; Xu, Xiao-Xiao1,4; Xu, Shendong1,4; Zhang, Liying1,4; Xu, Huifen1,3; Zhu, Liangzheng1; Zhang, Xianxi2; Zheng, Haiying3; Pan, Xu1
刊名JOURNAL OF MATERIALS CHEMISTRY A
出版日期2020-03-28
卷号8
ISSN号2050-7488
DOI10.1039/c9ta14139a
通讯作者Zheng, Haiying(hyzheng@ahu.edu.cn) ; Pan, Xu(xpan@rntek.cas.cn)
英文摘要The low photovoltaic performance of 2D perovskites, which is caused by high exciton binding energy and wide band gaps, has limited their further development and applications. Here, we adopted a new-type strategy to obtain high-quality 2-hydroxyethylamine (HEA)-based quasi-2D perovskite films by incorporating halogenated second spacer cations. Due to the effective passivation of halogenated benzylammonium cations with enhanced electronegativity, the mixed quasi-2D perovskites displayed superior crystallinity and reduced internal defects, leading to an enhanced charge transfer and suppressive carrier recombination. As a result, significantly improved power conversion efficiency (PCE) from 15.19% to 18.75% with an enhanced open-circuit voltage (V-oc) and fill factor (FF) was achieved. After aging at 85 degrees C for 200 h and 45 +/- 5% relative humidity (RH) for 1500 h, the unencapsulated optimal devices retained 81% and 90% of the initial PCE, respectively. Our study provides an effective and simple strategy to improve the photovoltaic performance and environmental stability of 2D perovskites for commercial applications.
WOS关键词EFFICIENCY ; STABILITY ; TRANSFORMATION
资助项目National Key Research and Development Program of China[2016YFA0202401] ; Colleges and Universities in Shandong Province Science and Technology Projects[J17KA097] ; Anhui Provincial Natural Science Foundation[1908085ME152]
WOS研究方向Chemistry ; Energy & Fuels ; Materials Science
语种英语
WOS记录号WOS:000526703800007
出版者ROYAL SOC CHEMISTRY
资助机构National Key Research and Development Program of China ; Colleges and Universities in Shandong Province Science and Technology Projects ; Anhui Provincial Natural Science Foundation
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/103651]  
专题中国科学院合肥物质科学研究院
通讯作者Zheng, Haiying; Pan, Xu
作者单位1.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Appl Technol, Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Peoples R China
2.Liaocheng Univ, Sch Chem & Chem Engn, Shandong Prov Key Lab, Collaborat Innovat Ctr Chem Energy Storage & Nove, Liaocheng 252000, Shandong, Peoples R China
3.Anhui Univ, Inst Phys Sci & Informat Technol, Hefei 230601, Peoples R China
4.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Guozhen,Xu, Xiao-Xiao,Xu, Shendong,et al. Passivation effect of halogenated benzylammonium as a second spacer cation for improved photovoltaic performance of quasi-2D perovskite solar cells[J]. JOURNAL OF MATERIALS CHEMISTRY A,2020,8.
APA Liu, Guozhen.,Xu, Xiao-Xiao.,Xu, Shendong.,Zhang, Liying.,Xu, Huifen.,...&Pan, Xu.(2020).Passivation effect of halogenated benzylammonium as a second spacer cation for improved photovoltaic performance of quasi-2D perovskite solar cells.JOURNAL OF MATERIALS CHEMISTRY A,8.
MLA Liu, Guozhen,et al."Passivation effect of halogenated benzylammonium as a second spacer cation for improved photovoltaic performance of quasi-2D perovskite solar cells".JOURNAL OF MATERIALS CHEMISTRY A 8(2020).

入库方式： OAI收割

来源：合肥物质科学研究院

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。