High-Efficiency Flexible Solar Cells Based on Organometal Halide Perovskites

Flexible and light‐weight solar cells are important because they not only supply power to wearable and portable devices, but also reduce the transportation and installation cost of solar panels. High‐efficiency organometal halide perovskite solar cells can be fabricated by a low‐temperature solution process, and hence are promising for flexible‐solar‐cell applications. Here, the development of perovskite solar cells is briefly discussed, followed by the merits of organometal halide perovskites as promising candidates as high‐efficiency, flexible, and light‐weight photovoltaic materials. Afterward, recent developments of flexible solar cells based on perovskites are reviewed. Organometal halide perovskites are promising photovoltaic materials for flexible and light‐weight solar cells. The high power conversion efficiency (over 15%) of flexible perovskite solar cells is not only useful to power wearable and portable devices, but also promising for off‐grid and on‐grid photovoltaic applications. Recent progress in flexible perovskite solar cells is discussed.