Recent advances in flexible perovskite solar cells.

Flexible and low-weight thin-film perovskite solar cells have attracted considerable attention for developing large-area, roll-to-roll and differently shaped photovoltaics with improved power conversion efficiencies. In this review, we describe how researchers have adopted different approaches to enhance the device performance of the flexible perovskite solar cells to compete with rigid substrates with tailored electron/hole transport materials and flexible substrates.