Polymerization-enhanced flexible perovskite solar cells: a mini review

Abstract The growing global energy demand and environmental issues associated with fossil fuels highlight the need for sustainable alternatives and among which solar energy plays a key role. Perovskite solar cells are rapidly developing and being considered as a disruptive photovoltaic technology. Particularly perovskite solar cells can be made flexible, which offer advantages such as being lightweight and highly adaptable, making them suitable for a wider range of applications. However, flexible solar cells face the dual challenges of insufficient flexibility and lower power conversion efficiency compared to their rigid counterparts. Cross-linking polymerization is considered as a promising approach to simultaneously improve both the flexibility and power conversion efficiency of solar cells. Therefore, this study primarily focuses on summarizing the application of cross-linked polymers in flexible perovskite solar cells. By categorizing and reviewing the utilization of cross-linked polymers, the goal is to provide a comprehensive understanding of how this technology effectively enhances the flexibility of high performance perovskite solar cells.