Solar cell and photovoltaic module

A photovoltaic module, comprising:

• a solar cell string formed by connecting a plurality of solar cells;
• an encapsulation layer configured to cover a surface of the solar cell string;
• and
• a cover plate configured to cover a surface of the encapsulation layer away from the solar cell string,
• wherein at least one of the plurality of solar cells comprises:
• a substrate having a front surface and a back surface opposite to the front surface, wherein the back surface includes a plurality of first regions, a plurality of second regions, and a plurality of gap regions, the plurality of first regions and the plurality of second regions are staggered and spaced from each other in a first direction, and each one of the plurality of gap regions is provided between one first region and one second region adjacent to the one first region, wherein a plurality of first pyramidal texture structure regions are formed on the back surface corresponding to the plurality of gap regions, and a distance between a top surface and a bottom surface of each of the plurality of first pyramidal texture structure regions ranges from 2 μm to 4 μm;
• a first conductive layer formed over the plurality of first regions;
• a second conductive layer formed over the plurality of second regions, wherein the second conductive layer has a conductivity type opposite to the first conductive layer;
• a first electrode forming electrical contact with the first conductive layer;
• a second electrode forming electrical contact with the second conductive layer;
• and
• a boundary region between the plurality of gap regions and the first conductive layer and/or the second conductive layer adjacent thereto, wherein the boundary region includes a plurality of strip or line-patterned texture structures arranged at intervals to form different light trapping structures with respect to the plurality of first pyramidal texture structures and configured to increase reflection of incident light on the back surface of the substrate.