Solar cell, method for preparing same and solar cell module

US11784266B2 · kind B2 · utility

Assignees

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

Inventors

• Wenqi Li · Kunming, CN
• Peiting ZHENG · 余新镇, CN
• Jie Yang · Foster City, US
• Menglei XU · Zhejiang, CN
• Xinyu Zhang · Changzhou City, CN
• Hao Jin · Shanghai, CN

Key dates

• Filing date: Oct 18, 2021
• Grant date: Oct 10, 2023
• Expiry date: Nov 7, 2041

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10F77/707

Abstract

A solar cell includes a substrate having a front surface and a back surface opposite to the front surface; a first passivation layer, a second passivation layer and a third passivation layer sequentially formed on the front surface of the substrate and in a direction away from the substrate; where the first passivation layer includes a dielectric material; the second passivation layer includes a first SiuNv material, and a value of v/u is 1.3≤v/u≤1.7; and the third passivation layer includes a SirOs material, and a value of s/r is 1.9≤s/r≤3.2; and a tunneling oxide layer and a doped conductive layer sequentially formed on the back surface of the substrate and in a direction away from the back surface; the doped conductive layer and the substrate are doped to have a same conductivity type.