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Room-Temperature Molten Salt for Facile Fabrication of Efficient and Stable Perovskite Solar Cells in Ambient Air
Lingfeng Chao1; Yingdong Xia1; Bixin Li2; Guichuan Xing3; Yonghua Chen1; Wei Huang1,4,5
2019-04-11
Source PublicationCHEM
ISSN2451-9294
Volume5Issue:4Pages:995-1006
Other Abstract

Here, we report an alternative environmentally friendly room-temperature molten salt, methylammonium acetate (MAAc), as a novel solvent for facile fabrication of perovskite solar cells(PSCs) in ambient air. MAAc possesses excellent chemical properties along with high viscosity, negligible vapor pressure, and a nonhazardous nature. Complete solubility of both methylammonium and lead salts by hydrogen bonds in MAAc was observed. Dense and pinholefree perovskite films with high reproducibility can be readily prepared by a simple one-step method without an anti-solvent even under a relative humidity of over 80%. Under optimized processing conditions, we achieved an average power conversion efficiency of 18.42% and a maximum efficiency of 20.05% in CH3NH3PbI3-based planar heterojunction structure. In addition, devices without encapsulation remained above 93% of their original efficiency for more than 1,000 h in ambient air. These findings may open up the possibility of developing a new approach for further improving PSC performance with higher reproducibility and reliability in ambient atmosphere.

DOIhttps://doi.org/10.1016/j.chempr.2019.02.025
Indexed BySCI
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000464241700023
PublisherCELL PRESS, 50 HAMPSHIRE ST, FLOOR 5, CAMBRIDGE, MA 02139 USA
Fulltext Access
Citation statistics
Cited Times [WOS]:8   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF PHYSICS AND CHEMISTRY
INSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorYonghua Chen; Wei Huang
Affiliation1.Key Laboratory of Flexible Electronics (KLOFE) & Institution of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), Nanjing, Jiangsu 211816, China
2.Department of Educational Science, Laboratory of College Physics, Hunan First Normal University, Changsha, Hunan 410205, China
3.Institute of Applied Physics and Materials Engineering, University of Macau, Macau, Macao SAR 999078, China
4.Shaanxi Institute of Flexible Electronics (SIFE), Northwestern Polytechnical University (NPU), Xi'an, Shaanxi 710072, China
5.Key Laboratory for Organic Electronics & Information Displays (KLOEID), and Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, Nanjing, Jiangsu 210023, China
Recommended Citation
GB/T 7714
Lingfeng Chao,Yingdong Xia,Bixin Li,et al. Room-Temperature Molten Salt for Facile Fabrication of Efficient and Stable Perovskite Solar Cells in Ambient Air[J]. CHEM,2019,5(4):995-1006.
APA Lingfeng Chao,Yingdong Xia,Bixin Li,Guichuan Xing,Yonghua Chen,&Wei Huang.(2019).Room-Temperature Molten Salt for Facile Fabrication of Efficient and Stable Perovskite Solar Cells in Ambient Air.CHEM,5(4),995-1006.
MLA Lingfeng Chao,et al."Room-Temperature Molten Salt for Facile Fabrication of Efficient and Stable Perovskite Solar Cells in Ambient Air".CHEM 5.4(2019):995-1006.
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