Formation and Stabilization of Inorganic Halide Perovskites for Photovoltaics

All-inorganic metal halide perovskites have sparked immense interest as long-term stable materials for highly efficient photovoltaic applications due to their outstanding photophysical properties and scalable solution fabrication processes. The formation of high-quality inorganic perovskite films and the stabilization of three-dimensional perovskite phase in recent years have promoted the increasing attention and fast development of highly efficient and stable inorganic perovskite solar cells. Based on the latest research progress, we summarized the crystal structural, optical, and photophysical properties of materials, their film formation methods, and the stabilization strategies of phase. These summaries aim to present a clear clue on the development of inorganic perovskites and evoke emerging technologies to form high-quality perovskite films, stabilize perovskite phase for further enhanced performance and stability, and promote commercial applications of inorganic perovskite solar cells.