Chemical Research in Chinese Universities ›› 2024, Vol. 40 ›› Issue (6): 1160-1170.doi: 10.1007/s40242-024-4049-x

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Improving the Stability and Efficiency of Perovskite Solar Cells by Controlling the Crystallization Active Layer with Binary Anti-solvent

CHEN Diandian, Hari Bala, ZHANG Bowen, ZHAO Zhiyong, ZHAO Yunpeng, CHENG Fei, WEN Yingjie   

  1. School of Materials Science and Engineering; Cultivating Base for Key Laboratory of Environment-friendly Inorganic Materials in University of Henan Province, Henan Polytechnic University, Jiaozuo 454000, P. R. China
  • Received:2024-02-28 Online:2024-12-01 Published:2024-10-26
  • Contact: Hari Bala,hari@hpu.edu.cn;ZHANG Bowen,zhangbw@hpu.edu.cn E-mail:hari@hpu.edu.cn;zhangbw@hpu.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (No. 61474038), the Key Scientific Research Project of Colleges and University in Henan Province, China (Nos. 20A430014, 21A430019), and the Youth Project of the Natural Science Foundation of Henan Province, China (No. 212300410149).

Abstract: In this study, a hybrid anti-solvent treatment was used to prepare high-quality MA0.9FA0.1PbI3 perovskite film, and perovskite solar cells (PSCs) with carbon counter electrodes of high stability and high efficiency were fabricated. Different ratios of chlorobenzene (CB) and toluene (TL) were utilized as binary anti-solvent, and dropwise addition was initiated within spin-coating perovskite film. By optimizing the ratio of CB and TL, the formation process of perovskite film was effectively controlled and the crystallinity and coverage of the perovskite film were improved. The carbon electrode PSCs composed of MA0.9FA0.1PbI3 film treated with anti-solvent exhibited a maximum power conversion efficiency (PCE) of 12.21% under air atmosphere conditions, which was higher than that of the PSCs of MA0.9FA0.1PbI3 film without anti-solvent treatment. Finally, PSCs showed that the device still exhibits 90% of the initial efficiency after being stored in the air for 100 d, which shows excellent stability.

Key words: Perovskite solar cell, MA0.9FA0.1PbI3, Anti-solvent treatment, Stability, Carbon electrode