Solar cell and photovoltaic module

A solar cell, comprising:

• a substrate having a front surface and a rear surface opposite to the front surface;
• a first dielectric layer formed over the rear surface of the substrate;
• a first doped conductive layer formed over a surface of the first dielectric layer away from the substrate, and doped with a first dopant element, wherein the substrate is doped with a second dopant element, one of the first dopant element and the second dopant element being a P-type dopant element and another of the first dopant element and the second dopant element being an N-type dopant element;
• a plurality of grooves arranged at intervals in a first direction, penetrating the first doped conductive layer and the first dielectric layer, and extending into the substrate;
• a second dielectric layer formed over bottom surfaces of the plurality of grooves;
• a second doped conductive layer formed over a surface of the second dielectric layer away from the substrate, and doped with the second dopant element;
• and
• a doped layer aligned with the second doped conductive layer, located between the second dielectric layer and the substrate, and doped with the first dopant element.