Solar cell, manufacturing method thereof and photovoltaic module

The invention relates to the technical field of solar cells, in particular to a solar cell, a manufacturing method thereof and a photovoltaic module. In the embodiment of the invention, after the boron diffusion treatment is performed on the first surface of the substrate, the phosphorus gettering treatment is performed on the second surface of the substrate, so that the second borosilicate glass layer formed on the second surface during the boron diffusion treatment can form the boron-phosphorosilicate glass layer, and then the acid solution is adopted to remove the boron-phosphorosilicate glass layer. Compared with a borosilicate glass layer, the boron-phosphorosilicate glass layer is easier to remove by an acid solution. Therefore, the phosphorus gettering treatment is added to the second surface of the substrate, so that the operation is convenient, the gettering effect of the second surface can be improved, and the performance of the battery is improved while the production efficiency of the battery is c