Solar cell, preparation method thereof and photovoltaic module

A solar cell, comprising:

• a semiconductor substrate, the semiconductor substrate comprising a first surface, the first surface comprising a first region and a second region adjacent to the first region along a first direction;
• a first substrate doped layer, the first substrate doped layer being located in the first region;
• a second substrate doped layer, the second substrate doped layer being located in the second region, the first substrate doped layer being connected to the second substrate doped layer;
• a first passivation layer, the first passivation layer being located on a side of the second substrate doped layer away from the semiconductor substrate;
• and
• a first doped semiconductor layer, the first doped semiconductor layer being located on a side of the first passivation layer away from the semiconductor substrate;
• wherein a doping type of the semiconductor substrate is opposite to a doping type of the first substrate doped layer;
• doping types of the first substrate doped layer, the second substrate doped layer, and the first doped semiconductor layer are the same;
• the first region is a non-metal contact region, and the second region is a metal contact region;
• wherein the first passivation layer comprises a first intrinsic amorphous silicon layer, and the first doped semiconductor layer comprises at least one of a first doped amorphous silicon layer, a first doped nanocrystalline silicon layer, or a first doped microcrystalline silicon layer;
• and
• wherein no semiconductor layer is disposed on the surface of the first substrate doped layer in the first region.