Solar cell, method for preparing the same, and photovoltaic module

A photovoltaic module, comprising:

• at least one cell string, each formed by connecting a plurality of solar cells;
• an encapsulation glue film, configured to cover a surface of the at least one cell string;
• and
• a cover plate, configured to cover a surface of the encapsulation glue film facing away from the at least one cell string;
• wherein each of the plurality of solar cells comprises:
• a substrate, having a first surface and a second surface opposite to the first surface, the first surface including alternating electrode regions and non-electrode regions, and transition regions, each respective transition region of the transition regions being abutted on one side by a respective electrode region of the electrode regions and on an opposing side by a respective non-electrode region of the non-electrode regions, wherein the respective transition region includes a plurality of spaced first pyramid structures and a plurality of micro-convex structures, and a one-dimensional size of a bottom of a respective micro-convex structure of the plurality of micro-convex structures is smaller than a one-dimensional size of a bottom of a respective first pyramid structure of the plurality of first pyramid structures;
• wherein the one-dimensional size of the bottom of the respective micro-convex structure or the respective first pyramid structure is one of a length or a diagonal length of the bottom of the respective micro-convex structure or the respective first pyramid structure, respectively, and wherein the plurality of spaced first pyramid structures are mixed with the plurality of micro-convex structures throughout the respective transition region;
• a first dielectric layer, formed over the respective electrode region;
• and
• a first doped conductive layer, formed over the first dielectric layer.