Guangdong Aiko Solar Energy Technology Co., Ltd.

Zhejiang Aiko Solar Energy Technology Co., Ltd.

Chun-Wen Lai

Jiebin Fang

Gang Chen

Kang-Cheng Lin

Ta-Neng Ho

Wenjie Yin

Nailin He

The present invention discloses a method for preparing a bifacial PERC solar cell. The present invention has high photoelectric conversion efficiency, high appearance quality, and high EL yield, and could solve the problems of both scratching and undesirable deposition.

Preparation method for bifacial perc solar cell

A PERC solar cell capable of improving photoelectric conversion efficiency and a preparation method thereof are provided. The solar cell consecutively includes, from the bottom up, a rear silver electrode (), a rear aluminum field (), a rear silicon nitride film (), a rear aluminum oxide film (), P-type silicon (), N-type silicon (), a front silicon nitride film (), and a front silver electrode (). The rear aluminum field () is connected to the P-type silicon () via a rear aluminum strip (). The P-type silicon () is a silicon wafer of the cell. The N-type silicon () is an N-type emitter formed by diffusion via the front surface of the silicon wafer. The front silicon nitride film () is deposited on the front surface of the silicon wafer. The rear aluminum oxide film () is deposited on the rear surface of the silicon wafer. The rear aluminum oxide film () is deposited after the front silicon nitride film () is deposited on the silicon wafer, and the rear surface of the silicon wafer is washed before depositing the rear aluminum oxide film (). The cell can significantly improves passivation effect of the rear aluminum oxide film and improve the open-circuit voltage and short-circuit current of the cell, thereby increasing photoelectric conversion efficiency of the cell.

PERC solar cell capable of improving photoelectric conversion efficiency and preparation method thereof

Solar cell

Double-side solar cell

Growing community of inventors

Guangdong, China

Chun-Wen Lai