Post-Treatment Passivation by Quaternary Ammonium Chloride Zwitterion for Efficient and Stable Perovskite Solar Cells

Li，Yan1,2; Zhang，Yong2; Zhang，Luozheng2,3; Liu，Chang2,3; Zhou，Xianyong2; Wang，Deng2; Niu，Bingbing2,4; Lu，Chunling2,4; Chang，Jianhui2; Jiang，Xuening5; Tang，Zikang1; Xu，Baomin2

2022

10.1002/solr.202101107

Solar RRL   影响因子和分区

2367-198X

Perovskite solar cells (PSCs) have been booming for more than a decade. Defect passivation strategies play an important role in updating the efficiency record. Herein, a posttreatment strategy is proposed to passivate the defects in PSCs by quaternary ammonium chloride (QAC) salts. The tetramethylammonium chloride (TC) molecule shows the best achievement among those passivation agents. Enhanced crystallinity and reduced defects of TC-treated perovskite result in promotion of the open-circuit voltage of the device from 1.06 to 1.12 V, thus largely improving the conversion efficiency from 19.8% to 21.7% for the FAMAPbIBr perovskite component. Moreover, the TC-based device retains 93.2% of its initial power conversion efficiency after storage in drying cupboard (relative humidity 20%≈30%) for more than 30 days. By the verification of various characterization techniques (transient resolved photoluminescence, electrochemical impedance spectroscopy, light intensity dependent voltage, and transient absorption spectroscopy), the enhanced performance results from the less recombination retarded by QAC in the treated device compared with the control device. Additionally, X-ray photoelectronic spectroscopy proves the interaction between TC molecule and Pb in perovskite. This system of selection will definitely provide a novel way to search for effective passivators to promote performance of PSCs.

different functional groups passivation perovskite solar cells quaternary ammonium chloride zwitterions

SCI ; EI

英语

通讯

WOS:000758897600001

20220811699922

Absorption spectroscopy ; Chlorine compounds ; Conversion efficiency ; Crystallinity ; Defects ; Efficiency ; Electrochemical impedance spectroscopy ; Molecules ; Open circuit voltage ; Perovskite ; Perovskite solar cells

Minerals:482.2 ; Energy Conversion Issues:525.5 ; Protection Methods:539.2.1 ; Solar Cells:702.3 ; Chemistry:801 ; Production Engineering:913.1 ; Atomic and Molecular Physics:931.3 ; Crystalline Solids:933.1 ; Materials Science:951

2-s2.0-85125040653

Scopus

1.Institute of Applied Physics and Materials Engineering,University of Macau,999078,Macao
2.Department of Materials Science and Engineering and Shenzhen Engineering Research and Development Center for Flexible Solar Cells,Southern University of Science and Technology,Shenzhen,518055,China
3.Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology,Shenzhen,518055,China
4.Department of Physics,Liaoning University of Science and Technology,Anshan,Liaoning,114501,China
5.School of Physics,Dalian University of Technology,Dalian,Liaoning,116023,China

Li，Yan,Zhang，Yong,Zhang，Luozheng,et al. Post-Treatment Passivation by Quaternary Ammonium Chloride Zwitterion for Efficient and Stable Perovskite Solar Cells[J]. Solar RRL,2022,6.

Li，Yan.,Zhang，Yong.,Zhang，Luozheng.,Liu，Chang.,Zhou，Xianyong.,...&Xu，Baomin.(2022).Post-Treatment Passivation by Quaternary Ammonium Chloride Zwitterion for Efficient and Stable Perovskite Solar Cells.Solar RRL,6.

Li，Yan,et al."Post-Treatment Passivation by Quaternary Ammonium Chloride Zwitterion for Efficient and Stable Perovskite Solar Cells".Solar RRL 6(2022).