Patent ID: 11862741
Assignee: JINKO SOLAR CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 19:
20. A photovoltaic module, comprising:
at least one cell string, wherein the cell string is formed by connecting a plurality of solar cells with each other;
a package film configured to cover a surface of the cell string; and
a cover plate configured to cover a surface of the package film facing away from the cell string;
wherein each of the plurality of solar cells comprises:
a substrate having a front surface and a rear surface opposite to the front surface, the rear surface having a textured region and a flat region adjacent to the textured region;
an emitter formed on the front surface of the substrate;
a front passivation layer on a surface of the emitter away from the substrate;
a front surface electrode in contact with the emitter;
a tunneling dielectric layer on the rear surface of the substrate;
a doped conductive layer on a surface of the tunnelling dielectric layer away from the substrate, the doped conductive layer including doping elements of the same type as doping elements in the substrate;
a rear passivation layer on a surface of the doped conductive layer; and
a rear electrode having a bottom surface in the doped conductive layer and part of the bottom surface is in contact with the textured region of the rear surface of substrate.