Improving the Stability and Efficiency of Perovskite Solar Cells by Controlling the Crystallization Active Layer with Binary Anti-solvent
Diandian Chen , Hari Bala , Bowen Zhang , Zhiyong Zhao , Yunpeng Zhao , Fei Cheng , Yingjie Wen
Chemical Research in Chinese Universities ›› 2024, Vol. 40 ›› Issue (6) : 1160 -1170.
Improving the Stability and Efficiency of Perovskite Solar Cells by Controlling the Crystallization Active Layer with Binary Anti-solvent
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.
Perovskite solar cell / MA0.9FA0.1PbI3 / Anti-solvent treatment / Stability / Carbon electrode
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