Perovskite nanomaterials are a class of materials that possess the same crystal structure as the mineral perovskite (CaTiO3). They are characterized by the formula ABX3, where 'A' and 'B' are cations of different sizes, and 'X' is an anion that bonds to both. These materials have garnered significant attention in the field of Nanotechnology due to their exceptional optical and electronic properties.