Solar cell and photovoltaic module

A photovoltaic module, comprising:

• one or more cell strings formed by connecting a plurality of the solar cells;
• one or more encapsulation layers configured to cover at least one surface of the one or more cell strings;
• and
• one or more cover plates configured to cover at least one surface of the one or more encapsulation layers away from the one or more cell strings;
• wherein each solar cell of the plurality of the solar cells includes a thin-film solar cell and a bottom cell stacked in a first direction, and the bottom cell includes:
• a transparent conductive layer, a first doped conductive layer, an intrinsic amorphous silicon layer, a substrate, and a second doped conductive layer that are stacked in the first direction, wherein the transparent conductive layer is between the thin-film solar cell and the first doped conductive layer, and the first doped conductive layer includes a doped amorphous silicon layer or a doped microcrystalline silicon layer;
• and
• one or more electrodes formed on a side of the second doped conductive layer away from the substrate, wherein the one or more electrodes are in ohmic contact with the second doped conductive layer.