Laminated passivation structure of solar cell and preparation method thereof

US12183839B2 · kind B2 · utility

Assignee

• TRINA SOLAR CO., LTD. · CN

Inventors

• Xueling Zhang · Beijing, CN
• Wei Liu · 安丰镇, CN
• Hong Chen · Changzhou City, CN
• Lei Jian · 安丰镇, CN
• Yifeng Chen · Taizhou City, CN

Key dates

• Filing date: May 21, 2021
• Grant date: Dec 31, 2024
• Expiry date: Sep 2, 2042

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/547

Abstract

A laminated passivation structure of solar cell and a preparation method thereof are disclosed herein. The laminated passivation structure of solar cell includes a P-type silicon substrate, a first dielectric layer, a second dielectric layer, a third dielectric layer and a fourth dielectric layer sequentially arranged on the back surface of the P-type silicon substrate from inside to outside. The preparation method includes generating a first dielectric layer on the back surface of the P-type silicon substrate, and then sequentially depositing a second dielectric layer, a third dielectric layer and a fourth dielectric layer on the first dielectric layer.