| abstract |
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 2 MX 6 , Z 2 MX 6 or YMX 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 b (L) 3 , wherein M 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. |