Back contact solar cell and photovoltaic module

Abstract

This present disclosure provides a back contact solar cell and a photovoltaic module. In one example, a back contact solar cell includes a silicon substrate, a P-type doped polysilicon layer, and an N-type doped polysilicon layer, where the silicon substrate includes a first side and a second side opposite to the first side. The P-type doped polysilicon layer is located in a first region on the first side of the silicon substrate, and the N-type doped polysilicon layer is located in a second region on the first side of the silicon substrate, where the first region is different from the second region. A ratio of a thickness of the P-type doped polysilicon layer to a thickness of the N-type doped polysilicon layer ranges from 1 to 2.