Perovskite

perovskite is any material with a crystal structure similar to the mineral called perovskite, which consists of calcium titanium oxide (CaTiO3). The mineral was first discovered in the Ural mountains of Russia by Gustav Rose in 1839 and named after Russian mineralogist L. A. Perovski (1792–1856). The general chemical formula for perovskite compounds is ABX3, where ‘A’ and ‘B’ are two cations, often of very different sizes, and X is an anion (frequently oxide) that bonds to both cations. The ‘A’ atoms are generally larger than the ‘B’ atoms. The ideal cubic structure has the B cation in 6-fold coordination, surrounded by an octahedron of anions, and the A cation in 12-fold cuboctahedral coordination.

As one of the most abundant structural families, perovskites are found in an enormous number of compounds that have wide-ranging properties, applications, and importance. Natural compounds with this structure are perovskite, loparite, and silicate perovskite bridgmanite. Since the discovery of perovskite solar cells, which contain methylammonium lead halide perovskites in 2009 there has been considerable research interest into perovskite materials