Methylammonium is a chemical compound with the formula CH₃NH₃. It consists of a methyl group (CH₃) attached to an ammonium ion (NH₄⁺). This compound is often studied in the context of perovskite solar cells, where it plays a crucial role in enhancing the efficiency of these energy-harvesting materials. Methylammonium can exist in various forms, including as a salt when combined with different anions. It is known for its applications in organic synthesis and as a precursor in the production of methylammonium lead halide, a key material in the development of solar energy technologies.