Back contact solar cell and solar cell module

Abstract

This present application provides a back contact solar cell and solar cell module, comprising: a substrate, provided with a substrate front surface and a substrate back surface opposite to each other, wherein the substrate front surface is close to a main-light-receiving surface of the cell, and the substrate back surface is close to a non-main-light-receiving surface of the cell; P-type polarity region, including a first doped semiconductor layer; N-type polarity region, including a second doped semiconductor layer, the N-type polarity region and the P-type polarity region are alternately located on side of the substrate back surface, wherein, a thickness of the second doped semiconductor layer along a normal direction of the cell is smaller than a thickness of the first doped semiconductor layer along the normal direction; and an isolation region, located between each two adjacent N-type polarity region and P-type polarity region. The back contact solar cell and solar cell module provided by this application can take into account the electrical and optical properties of the solar cell, further improving the short-circuit current, open-circuit voltage and photoelectric conversion efficiency of the solar cell.

Dependencies are inferred from the claim text.