Solar cell and manufacture method thereof, and photovoltaic module

US12166140B2 · kind B2 · utility

Assignee

• ZHEJIANG JINKO SOLAR CO., LTD. · CN

Inventors

• Nannan YANG · Zhejiang, CN
• Jingsheng JIN · Zhejiang, CN
• Bike ZHANG · Zhejiang, CN

Key dates

• Filing date: Aug 2, 2022
• Grant date: Dec 10, 2024
• Expiry date: Sep 9, 2042

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P70/50

Abstract

A solar cell is provided, including: a semiconductor substrate including a front surface and a rear surface arranged opposite to each other; an emitter located on the front surface of the semiconductor substrate; a front passivation layer located over the front surface of the semiconductor substrate; a tunneling layer located over the rear surface of the semiconductor substrate; a doped conductive layer located over a surface of the tunneling layer; a rear passivation layer located over a surface of the doped conductive layer; a front electrode in contact with the emitter; and a rear electrode in contact with the first doped conductive layer. The doped conductive layer includes a first doped conductive layer corresponding to a rear metallized region, and a second doped conductive layer corresponding to a rear non-metallized region. The first doped conductive layer has an oxygen content less than the second doped conductive layer.