Perovskite solar cells (PSCs) are being rapidly developed at a fiery stage due to their marvelous and fast-growing power conversion efficiency (PCE). Advantages such as high PCE, solution processability, tunable band gaps, and flexibility make PSCs one of the research hot spots in the energy field. Flexible PSCs (f-PSCs) owing to high power-to-weight ratios can be promising candidates to serve as power sources in mobile energy systems, space energy systems, portable functional devices, and so on. Herein, we give a review on recent progress in f-PSCs involving flexible substrates and flexible transparent electrodes, performance enhancement by optimizing functional layers, large-scale fabrication techniques, flexibility promotion strategies, and their potential applications. Furthermore, perspectives are discussed on the future development of f-PSCs.
Bibliographical noteFunding Information:
This work was supported by the National Key Research and Development Program of China (2017YFA0206600), the National Natural Science Foundation of China (52173192), the Science and Technology Innovation Program of Hunan Province (2020RC4004), and the Special Funding for the Construction of Innovative Provinces in Hunan Province (2020GK2024). J.Y. and D.Z. also thank the State Key Laboratory of Powder Metallurgy at Central South University for support.
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