Recent Advanced in Flexible Perovskite Solar Cell: Fabrication and Application.

Flexible perovskite solar cells have attracted widespread research effort because of their promising potential in light-weight wearable, portable, flyable and deployable for ultralight-weight space and near-space applications. During just the past few years, the efficiency has exceeded 18% due to the high quality perovskite film achieved by various low-temperature fabrication methods and the great achievements in developing matched interface and electrode materials. This review focuses on the recent progress of flexible perovskite solar cells concerning: Low-temperature fabrication methods to improve the properties of perovskite films, such as full coverage, uniform morphology and good crystallinity; The demonstrated interface layers used in flexible perovskite solar cells, considering key figure-of-merit such as high transmittance, high carrier mobility, suitable band gap and easy fabrication via low-temperature methods; The flexible transparent electrode materials developed to enhance the mechanical stability of the devices; Mechanical and long-term environmental stability of flexible perovskite device; Outlook of flexible perovskite solar cell in portable electronic device and its cost; Prospective of commercialization feasibility of the flexible perovskite solar cells.