Solar cells are provided which comprise an electron transporting layer and a light sensitizing layer of perovskite disposed over the surface of the electron transporting layer. The perovskite may have a formula selected from the group consisting of A.sub.2MX.sub.6, Z.sub.2MX.sub.6 or YMX.sub.6, wherein A is an alkali metal, M is a metal or a metalloid, X is a halide, Z is selected from the group consisting of a primary ammonium, an iminium, a secondary ammonium, a tertiary ammonium, and a quaternary ammonium, and Y has formula M.sub.b(L).sub.3, wherein M.sub.b is a transition metal in the 2+ oxidation state L is an N--N neutral chelating ligand. Methods of making the solar cells are also provided, including methods based on electrospray deposition.
REFERENCE TO GOVERNMENT RIGHTS
 This invention was made with government support under grant number DE-SC0001059 awarded by the Department of Energy. The government has certain rights in the invention.