Preparation process for solar cell resisting potential induced degradation

Abstract

The invention discloses a preparation process for a solar cell resisting potential induced degradation. The preparation process includes the steps: (a) cleaning a silicon slice, removing a damaged layer and making herbs into wool; (b) placing the silicon slice into a tubular diffusion furnace for diffusion; (c) removing phosphorus silicon glass and a back junction of the diffused silicon slice; (d) growing a silicon dioxide layer on the surface of an emitting electrode and then depositing a silicon nitride layer or directly depositing a silicon nitride passivation antireflection layer on the surface of the emitting electrode; (e) screen-printing a back electrode and a front electrode; and (f) sintering, testing and sorting. By the preparation process for the solar cell resisting potential induced degradation, the potential induced degradation resistance of the solar cell and a module comprising the same can be improved, so that stable performances of the module in a high-voltage working environment are ensured.

Description

technical field [0001] The invention relates to the field of solar cells, in particular to a preparation process of a solar cell resistant to potential-induced attenuation. Background technique [0002] Potential-induced decay was first discovered by Sunpower in 2005. The solar cell module has been exposed to high voltage for a long time, so that there is a leakage current between the glass and the packaging material, and a large amount of charge accumulates on the surface of the cell, which deteriorates the passivation effect of the cell surface, resulting in a decrease in the open circuit voltage, short circuit current and fill factor, making the module Performance is below design standards. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a preparation process of a solar cell capable of ensuring stable performance of a photovoltaic module in a high-voltage working environment and resisting potential-induced at...

AI Technical Summary

Problems solved by technology

The solar cell module has been exposed to high voltage for a long time, so that there is a leakage current between the glass and the packaging material, and a large amount of charge accumulates on the surface of the cell, which deteriorates the passivation effect of the cell surface, resulting in a decrease in the open circuit voltage, short circuit current and fill factor, making the module Performance below design standards