Although more than 20% efficiency have been obtained for flexible perovskite solar cells (FPSCs), there still needs more research to essentially enhance the bending resistance and self-healing characters for flexible devices. Here, an additive of trifluorobenzenesulfonamide (TFBSA) was added into perovskite, leading to much improved bending resistance and self-healing properties. The text results demonstrate that, with synergistic effect of Lewis base, high electronegative polarity C-F group and amide group in TFBSA, the defects and carrier recombination of FPSCs are significantly inhibited, thus an excellent photoelectric conversion efficiency of 19.29% from 16.44% is obtained, and the bending resistance and self-healing nature of FPSCs are greatly improved. It can maintain 82% of its efficiency after 3000 bending cycles, while efficiency of the control decreased to 11%. At the same time, modified devices demonstrate superior self-healing properties. It is found that modified FPSC recovered from 82% to 98% of its initial efficiency when it was placed in glove box in dark at room temperature for 7 days after 3000 bending cycles. While the control one only regained 19% from 11% at same conditions. Our work provides a new strategy for FPSCs to radically enhance self-healing properties and bending resistance by adding multifunctional group additives.

尽管柔性钙钛矿太阳能电池已获得超过20%的效率（FPSC），仍需要更多的研究来本质上增强柔性器件的抗弯曲性和自愈特性。在此，钙钛矿中添加了三氟苯磺酰胺（TFBSA）添加剂，从而大大提高了抗弯曲性和自修复性能。结果表明，通过路易斯碱、高负电性CF基团和TFBSA中酰胺基团的协同作用，FPSCs的缺陷和载流子复合得到显着抑制，从而获得了由16.44%提高到19.29%的优异光电转换效率。 FPSC的抗弯曲性和自愈性大大提高。在3000次弯曲循环后仍能保持82%的效率，而控制效率则下降至11%。同时，改进后的设备表现出卓越的自愈特性。结果发现，经过3000次弯曲循环后，将改性FPSC在室温下黑暗的手套箱中放置7天后，其初始效率从82%恢复到98%。而对照组在相同条件下仅从 11% 恢复到 19%。我们的工作为FPSC提供了一种新策略，通过添加多功能基团添加剂从根本上增强自愈性能和抗弯性能。