Flexible photovoltaics based on perovskite materials

Flexible perovskite solar cells (FPSCs) have received extensive interest for application in wearable electronic devices owing to their high flexibility, light weight, and compatibility with irregular-shaped electronic devices. The roll-to-roll manufacturing method, which exhibits high capacity for mass production, has enabled significant advancements in FPSCs via composition engineering, interface modification, fabrication process optimization, and new charge transport materials. Devices utilizing high-quality perovskite films have achieved a power conversion efficiency (PCE) exceeding 24%. This paper comprehensively outlines the recent advancements in the development of FPSCs, including flexible substrates, electrodes, low-temperature interlayers, and diverse methodologies for fabricating high-quality perovskite films. This review also discusses the existing challenges and outlines future opportunities for growth in this rapidly evolving field.