Solar cells are the basic components of photovoltaic modules, common photovoltaic modules according to solar cell materials to classify, mainly divided into crystalline silicon photovoltaic modules and thin film photovoltaic modules. Crystalline silicon photovoltaic modules are mainly monocrystalline silicon and polysilicon two categories, thin film photovoltaic modules include cadmium telluride, perovskite, copper indium gallium selenium and other types.