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

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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.

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Acknowledgements

The authors gratefully acknowledge the support from the National Natural Science Foundation of China (Nos. 61775081, 11904127, 22075101, 61904066, 61705020), Program for the Development of Science and Technology of Jilin Province (Nos. 20200801032GH and 20190103002JH), the Thirteenth Five-Year Program for Science and Technology of Education Department of Jilin Province (Nos. JJKH20200417KJ), Special Project of Industrial Technology Research and Development in Jilin Province (No. 2019C042-2), and Construction Program for Innovation Research Team of Jilin Normal University (No. 201703).

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  1. Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun, 130103, China

    Fengyou Wang, Meifang Yang, Yuhong Zhang, Jinyue Du, Lili Yang, Lin Fan, Yingrui Sui, Yunfei Sun & Jinghai Yang

  2. National Demonstration Center for Experimental Physics Education, Jilin Normal University, Siping, 136000, China

    Fengyou Wang, Lili Yang, Lin Fan, Yingrui Sui & Jinghai Yang

  3. Key Laboratory of Preparation and Application of Environmental Friendly Materials, Ministry of Education, Jilin Normal University, Changchun, 130103, China

    Fengyou Wang, Meifang Yang, Yuhong Zhang, Jinyue Du, Lili Yang, Lin Fan, Yingrui Sui & Jinghai Yang

  4. College of Science, Changchun University, Changchun, 130022, China

    Shuo Yang

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

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Wang, F., Yang, M., Zhang, Y. et al. Full-scale chemical and field-effect passivation: 21.52% efficiency of stable MAPbI3 solar cells via benzenamine modification. Nano Res. 14, 2783–2789 (2021). https://doi.org/10.1007/s12274-021-3286-2

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