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
Stabilizing TiO2/CH3NH3PbI3 heterostructure and enhancing interface trap passivation for efficient and stable perovskite solar cells

文献类型：期刊论文

作者Xu, Shendong3,4; Liang, Zheng3,4; Zheng, Haiying2,5; Zhang, Liying3,4; Xu, Xiaoxiao3,4; Xu, Huifen2,3,5; Zhu, Liangzheng1; Ye, Jiajiu3; Liu, Guozhen3; Pan, Xu3
刊名JOURNAL OF MATERIALS CHEMISTRY C
出版日期2021-07-12
ISSN号2050-7526
DOI10.1039/d1tc02812j
通讯作者Liu, Guozhen(gzliu@issp.ac.cn) ; Pan, Xu(xpan@rntek.cas.cn)
英文摘要Because the heterostructure of soft perovskite possesses a weak bonding nature, the photovoltaic performance and stability of devices are limited by numerous under-coordinated ions (Pb2+ or CH3NH3+) or iodine vacancies at the TiO2/CH3NH3PbI3 interface. Herein, organic super-halide salt tetrabutylammonium borohydride (TABH) was introduced to the TiO2/CH3NH3PbI3 interface, and it impeded the movement of decomposed components from the soft CH3NH3PbI3 lattice and thus increased the trap passivation effect. As a result, there was an increase in the power conversion efficiency (PCE) from 18.2% to as high as 20.4% with suppressed hysteresis, which can be ascribed to the incorporated TABH-optimized energy level alignment and fewer iodine vacancies as well as traps. Furthermore, considering the strong chemical interactions of the Pb-BH(4)(-)t bond, the under-coordinated lead ions were stabilized by the incorporation of the TABH interlayer and were able to impede ion migration or volatilization, thereby enhancing the stability of perovskite solar cells (PSCs). More importantly, PSCs maintained 80% of their initial efficiency after storage for 1200 h in the ambient environment. This work provides a facile interface strategy that compensates for the intrinsic instability of soft perovskite's heterostructure and demonstrates the fabrication of highly efficient PSCs for further application.
WOS关键词PHOTOVOLTAIC PERFORMANCE ; HIGHLY EFFICIENT ; LAYERS ; RECOMBINATION ; EVOLUTION ; BEHAVIOR
资助项目National Natural Science Foundation of China[11904366] ; CASHIPS Director's Fund[YZJJ2019QN16]
WOS研究方向Materials Science ; Physics
语种英语
WOS记录号WOS:000677705600001
出版者ROYAL SOC CHEMISTRY
资助机构National Natural Science Foundation of China ; CASHIPS Director's Fund
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/123185]  
专题中国科学院合肥物质科学研究院
通讯作者Liu, Guozhen; Pan, Xu
作者单位1.Chinese Acad Sci, High Magnet Field Lab, Anhui Prov Key Lab Condensed Matter Phys Extreme, Hefei 230031, Anhui, Peoples R China
2.Anhui Univ, Inst Phys Sci, Hefei 230601, Peoples R China
3.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Solid State Phys, Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Peoples R China
4.Univ Sci & Technol China, Hefei 230026, Peoples R China
5.Anhui Univ, Inst Informat Technol, Hefei 230601, Peoples R China
推荐引用方式
GB/T 7714		 Xu, Shendong,Liang, Zheng,Zheng, Haiying,et al. Stabilizing TiO2/CH3NH3PbI3 heterostructure and enhancing interface trap passivation for efficient and stable perovskite solar cells[J]. JOURNAL OF MATERIALS CHEMISTRY C,2021.
APA Xu, Shendong.,Liang, Zheng.,Zheng, Haiying.,Zhang, Liying.,Xu, Xiaoxiao.,...&Pan, Xu.(2021).Stabilizing TiO2/CH3NH3PbI3 heterostructure and enhancing interface trap passivation for efficient and stable perovskite solar cells.JOURNAL OF MATERIALS CHEMISTRY C.
MLA Xu, Shendong,et al."Stabilizing TiO2/CH3NH3PbI3 heterostructure and enhancing interface trap passivation for efficient and stable perovskite solar cells".JOURNAL OF MATERIALS CHEMISTRY C (2021).

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。