Double-sided solar cell and preparation method therefor

US12237433B2 · kind B2 · utility

Assignee

• HENGDIAN GROUP DMEGC MAGNETICS CO., LTD · CN

Inventors

• Yong Ren · Chengdu, CN
• Yue HE · Dongyang City, CN
• Hailiang Ren · Zhejiang, CN
• Shuai Guo · Beijing, CN
• Lei Zhang · Beijing, CN
• Dong Zhou · Nanning, CN
• Deshuang CHEN · Zhejiang, CN

Key dates

• Filing date: Apr 19, 2021
• Grant date: Feb 25, 2025
• Expiry date: Apr 19, 2041

Classification

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

Abstract

Disclosed are a double-sided solar cell and a preparation method therefor. The double-sided solar cell comprises: a silicon wafer having a PN junction, and a front first silicon oxide layer, a front second silicon oxide layer, a front first nitrogen-containing silicon compound layer, a front second nitrogen-containing silicon compound layer, and a front third silicon oxide layer that are located on one side of an N-type layer of the silicon wafer and are sequentially stacked along a direction away from the silicon wafer; and a passivation layer, a back silicon oxide layer, a back first nitrogen-containing silicon compound layer, and a back second nitrogen-containing silicon compound layer that are located on one side of a P-type layer of the silicon wafer and are sequentially stacked along the direction away from the silicon wafer.