Solar cell and photovoltaic module

US12278303B1 · kind B1 · utility

Assignees

• ZHEJIANG JINKO SOLAR CO., LTD. · CN
• JINKO SOLAR CO., LTD. · CN

Inventors

• Zhao Wang · Hubei, CN
• Hao Jin · Shanghai, CN
• Mengchao Shen · 盐官镇, CN
• Jiajia Zhu · 盐官镇, CN
• Jie Yang · Foster City, US
• Xinyu Zhang · Changzhou City, CN

Key dates

• Filing date: Feb 20, 2024
• Grant date: Apr 15, 2025
• Expiry date: Feb 20, 2044

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10F77/311

Abstract

A solar cell is provided, including a substrate having a first surface and a second surface, a first dielectric layer formed on the first surface, a first doped polysilicon layer formed on the first dielectric layer, a second dielectric layer formed on the second surface, a second doped polysilicon layer formed on the second dielectric layer, a first passivation layer formed on the first doped polysilicon layer, a second passivation layer formed on the second doped polysilicon layer, first electrodes and second electrodes. The first doped polysilicon layer is doped with an N-type doping element and has a surface having a first roughness, the second doped polysilicon layer is doped with a P-type doping element and has a surface having a second roughness, and the second roughness is less than the first roughness.