Optimization of anti-solvent engineering toward high performance perovskite solar cells

作者：Li, Jian; Yang, Ruihan; Que, Longcheng^*; Wang, Yafei; Wang, Feng; Wu, Jiang; Li, Shibin

来源：Journal of Materials Research, 2019, 34(14): 2416-2424.

DOI：10.1557/jmr.2019.122

• perovskite solar cells
• anti-solvent
• green solvents
• morphology engineering

Anti-solvent treatment assisted crystallization is currently one of the most widely used methods to obtain highquality perovskite films ascribed to its great operability. However, choosing a proper anti-solvent toward highquality perovskite film for perovskite solar cells (PSCs) remains elusive. In this study, we qualitatively evaluate the impact of anti-solvent treatment on the grain growth and phase composition of perovskite by X-ray diffraction, scanning electron microscope, Fourier transform infrared spectrometer, and UV-vis absorption measurement, etc. The results demonstrate that the chemical groups in anti-solvents also affect the formation of perovskites, and anti-solvents with a low boiling point and good polarity contribute to the superior efficiency and reproducibility of PSCs. The device prepared using ether as an anti-solvent exhibits the best power conversion efficiency of 18.47%. The results indicate a new path toward selecting an ideal anti-solvent to improve the performance of PSCs.

• 单位
  1; 电子科技大学