UM  > INSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Affiliated with RCfalse
Status已發表Published
PTB7 as additive in Anti-solvent to enhance perovskite film surface crystallinity for solar cells with efficiency over 21%
Wang, Zhen1,2,3,4; Chen, Shi5; Gao, Xingyu1,2,3,4
2022-02-01
Source PublicationApplied Surface Science
ISSN0169-4332
Volume575
Abstract

Low temperature solution-processed organic–inorganic hybrid perovskite films inevitably encounter defects especially on surface and at grain boundaries. Anti-solvent washing has been widely practiced in fabricating uniform and dense perovskite films, but unfortunately it could cause even more defects on surface. Herein, polymer PTB7 was introduced into anti-solvent as an additive to significantly enhance perovskite film surface crystallinity with fewer defects, as evidenced by depth sensitive grazing incidence X-ray diffraction. Such improvements could be attributed to the Lewis base coordination bonds formed between PTB7 and Pb atoms in the surface region which slow down crystallization dynamics for enhanced perovskite surface crystallinity and effectively passivate defects at the perovskite grain boundary and film surface. With PTB7 in anti-solvent, the fabricated perovskite solar cells (PSCs) achieved a champion power conversion efficiency (PCE) of 21.41% from that of 19.79% for the control devices without PTB7. In addition, the hydrophobic alkyl chains in PTB7 were shown to improve film surface hydrophobicity with enhanced environmental stability of both the fabricated films and PSCs. Thus, addition of PTB7 in anti-solvent is proven to effectively improve the performance and stability of PSCs which could be easily applied in the fabrication of PSCs and other perovskite-based optoelectronics.

KeywordAnti-solvent Defects Passivation Depth Sensitive Gixrd Perovskite Solar Cells Stability Surface Crystallization
DOI10.1016/j.apsusc.2021.151737
URLView the original
Language英語English
Scopus ID2-s2.0-85118754349
Fulltext Access
Citation statistics
Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorChen, Shi; Gao, Xingyu
Affiliation1.Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China
2.Shanghai Synchrotron Radiation Facility (SSRF), Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, China
3.University of Chinese Academy of Sciences, Beijing, 19A Yuquan Road, 100049, China
4.Key Laboratory of Interfacial Physics and Technology, Chinese Academy of Sciences, Shanghai, 2019 Jia Luo Road, Jiading district, 201800, China
5.Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade Taipa, Macau, China
Corresponding Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Recommended Citation
GB/T 7714
Wang, Zhen,Chen, Shi,Gao, Xingyu. PTB7 as additive in Anti-solvent to enhance perovskite film surface crystallinity for solar cells with efficiency over 21%[J]. Applied Surface Science,2022,575.
APA Wang, Zhen,Chen, Shi,&Gao, Xingyu.(2022).PTB7 as additive in Anti-solvent to enhance perovskite film surface crystallinity for solar cells with efficiency over 21%.Applied Surface Science,575.
MLA Wang, Zhen,et al."PTB7 as additive in Anti-solvent to enhance perovskite film surface crystallinity for solar cells with efficiency over 21%".Applied Surface Science 575(2022).
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wang, Zhen]'s Articles
[Chen, Shi]'s Articles
[Gao, Xingyu]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wang, Zhen]'s Articles
[Chen, Shi]'s Articles
[Gao, Xingyu]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wang, Zhen]'s Articles
[Chen, Shi]'s Articles
[Gao, Xingyu]'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.