The biggest difference between the third generation of solar cells and the previous generation is the introduction of "organic substances" and "nanotechnology" into the manufacturing process. The types of previous-generation cells include photochemical solar cells, dye-sensitized solar cells, polymer solar cells, and nanocrystalline solar cells, and multilayer structures have also been made for the light-absorbing thin films of cells to improve solar conversion efficiency. Perovskite is a new type of artificially synthesized solar cell material. It has excellent photoelectric conversion rate, abundant raw materials, low cost, and environmentally friendly production. Therefore, it has quickly become a hot research field that has attracted wide attention.