SOLAR CELL AND PREPARATION METHOD THEREFOR

The present application relates to the technical field of photovoltaics, and provides a solar cell and a preparation method therefor. The preparation method for a solar cell comprises: forming a selective emitter on the front surface of a solar cell, the selective emitter comprising a first doped region and a second doped region, and the concentration of P-type doping in the first doped region being greater than the concentration of P-type doping in the second doped region; and bringing a positive electrode of the solar cell to be in electrical contact with the first doped region. The selective emitter and the positive electrode are provided on the front surface of the solar cell, the selective emitter comprises the first doped region and the second doped region, the concentration of P-type doping in the first doped region is greater than the concentration of P-type doping in the second doped region, and the positive electrode is in electrical contact with the first doped region. The solar cell can effectivel