Synthesis of Titanium Oxide and Fabrication of High-Efficiency, Low-Cost Perovskite Solar Cells

Perovskite solar cells are solar cells that use a material with a crystalline structure called perovskite, are substances that contain organic ions, lead ions, and halide ions such as iodine and bromine in a crystalline structure. Perovskite is a general term for materials represented by the general formula ABX3, and is known as a unique group of materials with intriguing electrical and magnetic properties, including superconductivity. When A is a methylammonium ion (CH3NH3) +, B is a lead(II) ion (Pb2+), and X is a halide ion (I−), the resulting perovskite is methylammonium lead halide (CH3NH3)PbX (X = Cl, Br, I) . When formed into a thin film and exposed to light, it exhibits excellent photoresponsiveness, shown in the figure. [1][2]