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Recent cutting-edge strategies for flexible perovskite solar cells toward commercialization.

Flexible perovskite solar cells (f-PSCs) have attracted tremendous attention as a self-power supply for various electronic devices that require high power, various form-factors, and a light-weight power supply. In addition, many studies have investigated scalable and continuous roll-to-roll (R2R) processes, with the aim of mass production and commercialization of f-PSCs. In this review, we focus on the strategies developed in the last three years toward commercialization of high-efficiency, lightweight and ultra-flexible, and reliable perovskite solar modules (f-PSMs). Furthermore, the research perspectives of f-PSCs regarding their future development are addressed.