UM  > 應用物理及材料工程研究所
Impacts of alkaline on the defects property and crystallization kinetics in perovskite solar cells
Yihua Chen1; Nengxu Li1; Ligang Wang1; Liang Li1; Ziqi Xu1; Haoyang Jiao1; Pengfei Liu2; Cheng Zhu2; Huachao Zai2; Mingzi Sun3; Wei Zou4; Shuai Zhang5; Guichuan Xing6; Xinfeng Liu5; Jianpu Wang4; Dongdong Li7; Bolong Huang3; Qi Chen2; Huanping Zhou1
2019-12-01
Source PublicationNature Communications
ISSN2041-1723
Volume10Issue:1
Abstract

Further minimizing the defect state density in the semiconducting absorber is vital to boost the power conversion efficiency of solar cells approaching Shockley-Queisser limit. However, it lacks a general strategy to control the precursor chemistry for defects density reduction in the family of iodine based perovskite. Here the alkaline environment in precursor solution is carefully investigated as an effective parameter to suppress the incident iodine and affects the crystallization kinetics during film fabrication, via rationale adjustment of the alkalinity of additives. Especially, a ‘residual free’ weak alkaline is proposed not only to shrink the bandgap of the absorber by modulating the stoichiometry of organic cation, but also to improve the open circuit voltage in the resultant device. Consequently, the certified efficiency of 20.87% (Newport) is achieved with one of the smallest voltage deficits of 413 mV in the planar heterojunction perovskite solar cell.

DOI10.1038/s41467-019-09093-1
URLView the original
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000460510000000
Fulltext Access
Citation statistics
Document TypeJournal article
CollectionInstitute of Applied Physics and Materials Engineering
Corresponding AuthorHuanping Zhou
Affiliation1.Key Laboratory for the Physics and Chemistry of Nanodevices, Beijing Key Laboratory for Theory and Technology of Advanced Battery Materials, Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, P. R. C
2.School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China.
3.Department of Applied Biology and Chemical Technology, Hong Kong Polytechnic University, Hong Kong 999077, P. R. China
4.Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, P. R. China.
5.CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, P. R. China
6.Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Macau 999078, P. R. China.
7.Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, P. R. China. Correspondence and requests for materials should be addressed to H.Z.
Recommended Citation
GB/T 7714
Yihua Chen,Nengxu Li,Ligang Wang,et al. Impacts of alkaline on the defects property and crystallization kinetics in perovskite solar cells[J]. Nature Communications,2019,10(1).
APA Yihua Chen.,Nengxu Li.,Ligang Wang.,Liang Li.,Ziqi Xu.,...&Huanping Zhou.(2019).Impacts of alkaline on the defects property and crystallization kinetics in perovskite solar cells.Nature Communications,10(1).
MLA Yihua Chen,et al."Impacts of alkaline on the defects property and crystallization kinetics in perovskite solar cells".Nature Communications 10.1(2019).
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Yihua Chen]'s Articles
[Nengxu Li]'s Articles
[Ligang Wang]'s Articles
Baidu academic
Similar articles in Baidu academic
[Yihua Chen]'s Articles
[Nengxu Li]'s Articles
[Ligang Wang]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Yihua Chen]'s Articles
[Nengxu Li]'s Articles
[Ligang Wang]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.