Perovskite supercapacitors have a promising future in the area of energy storage; due to their superior optoelectronic characteristics, simple device construction and increased efficiency. The book focuses on organic-inorganic perovskite solar cells (PSCs); organometallic halides-based perovskite solar cells (OMHP-SCs); power conversion efficiency (PCE); ferroelectric-based perovskites; recycling of perovskite-based solar cell modules; lead-free perovskite solar cells (PSCs); and inorganic tin perovskite solar cells.