Today’s Patent – Solar Cell and Photovoltaic Module

The said invention (US11735675B2) was invented by Jingsheng Jin, Xinyu Zhang, Nannan Yang, Bike Zhang, Lin’an ZHANG, Guangming LIAO, patented by USPTO on 09-12-2021. Currently, it stands assigned to Zhejiang Jinko Solar Co Ltd , Jinko Solar Co Ltd.

Embodiments of the present disclosure relate to the field of solar cell, in particular to a solar cell and a photovoltaic module. The performance of a solar cell (for example, photoelectric conversion efficiency) is subject to optical and electrical losses. The optical loss may be resulted from, for example, reflection of a front surface of the cell, shadows of grid lines, non-absorption of a long-wave band, and the like. The electrical loss may be resulted from, for example, photogenerated carrier recombination on a surface of a semiconductor and inside the semiconductor, contact resistance between the semiconductor and metal grid lines, contact resistance between a metal and the semiconductor, and the like.

A solar cell and a photovoltaic module are disclosed, including: a substrate; a tunneling dielectric layer and a doped conductive layer disposed on the substrate, the tunneling dielectric layer being disposed between the doped conductive layer and a surface of the substrate, the doped conductive layer having a N-type or P-type doping element and having a plurality of first heavily doped regions spaced apart from each other and extending in a first direction, a doping concentration in the first heavily doped regions being greater than that in other regions of the doped conductive layer; a passivation layer disposed on a surface of the doped conductive layer facing away from the substrate; and a plurality of electrodes spaced apart from each other, extending in a second direction and penetrating the passivation layer to contact the doped conductive layer, at least two first heavily doped regions contacting a same electrode.