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

A solar cell, comprising:

• a substrate having a front side and a back side opposite to each other;
• a first doped layer and a second doped layer alternately arranged along a first direction on the back side;
• wherein the first doped layer and the second doped layer adjacent to the first doped layer are separated by an isolation region;
• a doping type of the first doped layer is different from a doping type of the second doped layer;
• a portion of the back side located at the isolation region is exposed;
• the first doped layer has a first slope sidewall facing the isolation region, and the second doped layer has a second slope sidewall facing the isolation region;
• and
• a first electrode and a second electrode, the first electrode being in electrical contact with the first doped layer, and the second electrode being in electrical contact with the second doped layer,
• wherein an angle between the first sloped sidewall and a surface of the first doped layer facing the back side is a first angle, and the first angle is an acute angle;
• and an angle between the second sloped sidewall and a surface of the second doped layer facing the back side is a second angle, and the second angle is an acute angle, and
• wherein the first angle is less than or equal to the second angle.