Solar cell

A solar cell, comprising:

• a silicon substrate containing antimony, wherein the silicon substrate has a first surface;
• an antimony-containing tunneling oxide layer covering the first surface;
• and
• a doped conductive layer covering, along a thickness direction of the solar cell, a surface of the antimony-containing tunneling oxide layer away from the silicon substrate, wherein the doped conductive layer contains antimony,
• wherein an antimony concentration of the antimony-containing tunneling oxide layer is greater than an antimony concentration of the silicon substrate, and the antimony concentration of the silicon substrate is greater than an antimony concentration of the doped conductive layer, and
• wherein along the thickness direction of the solar cell, a first antimony-containing region is formed at a side of the doped conductive layer adjacent to the antimony-containing tunneling oxide layer, and an antimony concentration of the first antimony-containing region is greater than an antimony concentration of rest region of the doped conductive layer.