Solar cell and photovoltaic module

A photovoltaic module, comprising:

• at least one cell string, formed by connecting a plurality of solar cells;
• at least one encapsulation adhesive layer, configured to cover a surface of the at least one cell string;
• and
• at least one cover plate, configured to cover a surface of the at least one encapsulation adhesive layer away from the at least one cell string;
• wherein each solar cell of the plurality of solar cells includes:
• a substrate, having a front surface and a rear surface opposite to each other;
• a first doped polycrystalline silicon layer, doped with an N-type dopant element and disposed over the rear surface;
• a second doped polycrystalline silicon layer, doped with a P-type dopant element and disposed over the rear surface, wherein the first doped polycrystalline silicon layer includes a plurality of portions, the second doped polycrystalline silicon layer includes a plurality of portions, and the plurality of portions of the first doped polycrystalline silicon layer interleave with the plurality of portions of the second doped polycrystalline silicon layer;
• and
• first electrodes and second electrodes, wherein the first electrodes are in electrical contact with the first doped polycrystalline silicon layer, and the second electrodes are in electrical contact with the second doped polycrystalline silicon layer;
• wherein a surface of the first doped polycrystalline silicon layer away from the substrate has a plurality of first protrusion structures;
• wherein a surface of the second doped polycrystalline silicon layer away from the substrate has a plurality of second protrusion structures;
• and
• wherein an average thickness of the plurality of first protrusion structures is greater than an average thickness of the plurality of second protrusion structures.