Solar cell and photovoltaic module

A photovoltaic module, comprising:

• a plurality of solar cells electrically connected to each other, wherein each of the plurality of solar cells comprises:
• a silicon substrate, wherein the silicon substrate comprises:
• a first surface and a second surface that are opposite to each other;
• and
• a plurality of side surfaces connecting the first surface and the second surface, wherein at least one side surface of the plurality of side surfaces comprises first texture regions and second texture regions, each of the first texture regions comprises a plurality of first pyramid structures, and the second texture regions comprise a plurality of second pyramid structures,
• wherein a structural dimension of a second pyramid structure of the plurality of second pyramid structures is greater than a structural dimension of a first pyramid structure of the plurality of first pyramid structures, and
• wherein the second texture regions are located between adjacent first texture regions of the first texture regions;
• and
• a passivation layer, wherein the passivation layer covers the first texture regions and the second texture regions of the at least one side surface.