Journal
SOLAR ENERGY
Volume 220, Issue -, Pages 251-257Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.solener.2021.03.055
Keywords
Perovskite solar cell; Defect passivation; Mixed anti-solvent; Perylene
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Funding
- Doctoral Scientific Research Foundation of Xinyang Normal University
- Nanhu Scholars Program for Young Scholars of XYNU
- Key Project of Henan Province Colleges and Universities Plan [19A430022]
- Natural Science Foundation of Henan Province [202300410334]
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In this study, a method using chlorobenzene/perylene mixed anti-solvent to passivate defects in perovskite films is proposed, resulting in a significant improvement in the power conversion efficiency of perovskite solar cells.
Power conversion efficiency and stability of perovskite solar cells are greatly influenced by the defects of the perovskite films. To enhance the performance of perovskite solar cells, the defects of perovskite films should be effectively passivated. In this work, we provide an easy and feasible method to passivate the defects of perovskite films using chlorobenzene/perylene mixed anti-solvent. The validity of the defects passivation is confirmed experimentally. Under the optimized concentration, chlorobenzene/perylene mixed anti-solvent can boost the power conversion efficiency of the perovskite solar cells to 19.42%, which is 13.63% higher than the reference solar cells (17.09%). A champion power conversion efficiency of 20.05% is also demonstrated.
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