Solar cell and photovoltaic module

US11664467B2 · kind B2 · utility

Assignees

• SHANGHAI JINKO GREEN ENERGY ENTERPRISE MANAGEMENT CO., LTD. · CN
• ZHEJIANG JINKO SOLAR CO., LTD. · CN

Inventors

• Wenqi Li · Kunming, CN
• Ding Yu · Zhejiang, CN
• Jie Yang · Foster City, US
• Xinyu Zhang · Changzhou City, CN
• Hao Jin · Shanghai, CN

Key dates

• Filing date: Sep 23, 2021
• Grant date: May 30, 2023
• Expiry date: Sep 23, 2041

Classification

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

Abstract

A solar cell and a photovoltaic module including the same are provided. The solar cell includes a substrate having a first surface and a second surface opposite to each other; a first passivation stack disposed on the first surface and including a first oxygen-rich dielectric layer, a first silicon-rich dielectric layer, a second oxygen-rich dielectric layer, and a second silicon-rich dielectric layer that are sequentially disposed in a direction away from the first surface, wherein an atomic fraction of oxygen in the first oxygen-rich dielectric layer is less than an atomic fraction of oxygen in the second oxygen-rich dielectric layer; a tunneling oxide layer disposed on the second surface; a doped conductive layer disposed on a surface of the tunneling oxide layer; and a second passivation layer disposed on a surface of the doped conductive layer.