Patent ID: 11804564

Abstract:
Provided is a solar cell, including: an N-type semiconductor substrate having a front surface and a rear surface opposite to the front surface; a boron diffusion layer arranged on the front surface of the N-type semiconductor substrate, a first passivation layer is provided on a surface of the boron diffusion layer, and a first electrode is provided passing through the first passivation layer to form an electrical connection with the N-type semiconductor substrate; and a phosphorus-doped polysilicon layer arranged on the rear surface of the N-type semiconductor substrate. A silicon oxide layer containing nitrogen and phosphorus is provided between the rear surface of the N-type semiconductor substrate and the phosphorus-doped polysilicon layer, a second passivation layer is provided on a surface of the phosphorus-doped polysilicon layer, and a second electrode is provided passing through the second passivation layer to form an electrical connection with the phosphorus-doped polysilicon layer.