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Perovskite is A material with a unique crystal structure, originally found in natural minerals, and now generally refers to a class of compounds with the structure of ABX3, where A is usually an organic cation, B is a metal ion, and X is a halogen anion. This structure gives perovskite materials a series of excellent photoelectric properties, so that they show great application potential in the field of solar cells. Perovskite materials can adjust the band gap by changing the composition of the material, and then regulate the wavelength range of the light absorption, and maximize the utilization efficiency of sunlight. It is precisely because of the adjustable band gap of perovskite materials, when constructing solar cells, perovskite materials with different band gaps or perovskite materials and silicon-based materials can be composed of laminated structures to improve the overall light absorption efficiency. In addition, perovskite materials can be prepared at low temperatures by wet process such as solution method, and the preparation cost is also low. As a representative of the third generation solar cells with low cost and high photoelectric conversion efficiency, perovskite solar cells have great application potential.