Used in specialized inorganic synthesis and materials research, particularly in the development of perovskite-type compounds for optoelectronic applications. Exhibits potential in solid-state devices due to its ionic conductivity and structural properties. Investigated for use in advanced photovoltaic cells and radiation detection materials owing to the presence of heavy elements that enhance X-ray and gamma-ray absorption. Also serves as a precursor in the preparation of cesium lead chloride-based crystals and thin films.