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Nano Research

Article Title

Full-scale chemical and field-effect passivation: 21.52% efficiency of stable MAPbI3 solar cells via benzenamine modification

Authors

Fengyou Wang, Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China; National Demonstration Center for Experimental Physics Education, Jilin Normal University, Siping 136000, China; Key Laboratory of Preparation and Application of Environmental Friendly Materials, Ministry of Education, Jilin Normal University, Changchun 130103, China
Meifang Yang, Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China; Key Laboratory of Preparation and Application of Environmental Friendly Materials, Ministry of Education, Jilin Normal University, Changchun 130103, China
Yuhong Zhang, Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China; Key Laboratory of Preparation and Application of Environmental Friendly Materials, Ministry of Education, Jilin Normal University, Changchun 130103, China
Jinyue Du, Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China; Key Laboratory of Preparation and Application of Environmental Friendly Materials, Ministry of Education, Jilin Normal University, Changchun 130103, China
Shuo Yang, College of Science, Changchun University, Changchun 130022, China
Lili Yang, Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China; National Demonstration Center for Experimental Physics Education, Jilin Normal University, Siping 136000, China; Key Laboratory of Preparation and Application of Environmental Friendly Materials, Ministry of Education, Jilin Normal University, Changchun 130103, ChinaFollow
Lin Fan, Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China; National Demonstration Center for Experimental Physics Education, Jilin Normal University, Siping 136000, China; Key Laboratory of Preparation and Application of Environmental Friendly Materials, Ministry of Education, Jilin Normal University, Changchun 130103, China
Yingrui Sui, Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China; National Demonstration Center for Experimental Physics Education, Jilin Normal University, Siping 136000, China; Key Laboratory of Preparation and Application of Environmental Friendly Materials, Ministry of Education, Jilin Normal University, Changchun 130103, China
Yunfei Sun, Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
Jinghai Yang, Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China; National Demonstration Center for Experimental Physics Education, Jilin Normal University, Siping 136000, China; Key Laboratory of Preparation and Application of Environmental Friendly Materials, Ministry of Education, Jilin Normal University, Changchun 130103, ChinaFollow

Keywords

chemical passivation, anti-solvent, MAPbI3 solar cells, recombination, charge transfer

Abstract

Organic-inorganic metal halide perovskite solar cells have achieved high efficiency of 25.5%. Finding an effective means to suppress the formation of traps and correlate stability losses are thought to be a promising route for further increasing the photovoltaic performance and commercialization potential of perovskite photovoltaic devices. Herein, we report a facile passivation model, which uses a multi-functional organic molecule to simultaneously realize the chemical passivation and field-effect passivation for the perovskite film by an upgraded anti-solvent coating method, which reduces the trap states density of the perovskite, improves interface charge transfer, and thus promotes device performance. In addition, the hydrophobic groups of the molecules can form a moisture-repelling barrier on the perovskite grains, which apparently promotes the humidity stability of the solar cells. Therefore, the optimal power conversion efficiency (PCE) of perovskite solar cells after synergistic passivation reaches 21.52%, and it can still retain 95% of the original PCE when stored in ~ 40% humidity for 30 days. Our findings extend the scope for traps passivation to further promote both the photovoltaic performance and the stability of the perovskite solar cells.

Publisher

Tsinghua University Press

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