A kind of silicon solar cell and its manufacturing method

Abstract

The invention belongs to the field of solar cells, and relates to a silicon solar cell, in particular to a method for manufacturing a silicon solar cell, comprising the following steps: step 1, performing texturing, diffusion and etching on a silicon substrate, and then performing plasma Cleaning treatment to achieve a clean surface; step 2, evenly apply ethyl silicate ethanol solution on the surface of the silicon substrate, dry at a constant temperature in a humid environment for 2-4h, and then heat up and dry for 30-120min to form an anti-reflection film; Step 3: Pre-print on the silicon substrate, dry under nitrogen environment to form a pre-printed film, then print electrodes, and sinter the silicon wafers with printed electrodes to make solar cells. The invention solves the potential-induced attenuation phenomenon of existing solar panels, utilizes the electrical insulation properties of silicon dioxide and the electrical conductivity of titanium monoxide, and realizes no leakage current phenomenon on the surface of the silicon substrate, supplemented by the combination of titanium monoxide and slurry Connectivity, forming a fast conduction system.

Description

technical field [0001] The invention belongs to the field of solar cells, and relates to a silicon solar cell, in particular to a method for manufacturing a silicon solar cell. Background technique [0002] At present, solar energy is a kind of clean energy, and the photovoltaic module uses the photovoltaic effect of the P-N junction of silicon material to convert light energy into electrical energy, including: a glass backplane and a glass substrate set opposite to each other; The solar cells between them; the encapsulation frames for fixing the glass backplane, solar cells and glass substrates, etc. [0003] The traditional solar cell production process includes: texturing, diffusion, etching, chemical vapor deposition (PECVD), screen printing and sintering and other processes. Among them, texturing refers to the use of acid or alkali to corrode different surface topography on the surface of the silicon wafer, that is, surface texture, thereby reducing the reflectivity of...

AI Technical Summary

Problems solved by technology

[0004] However, the photovoltaic modules produced by the solar cell manufacturing process in the prior art are prone to potential-induced attenuation effects, that is, the photovoltaic modules are under the action of high negative voltage for a long time, so that there is a leakage current channel between the glass substrate and the packaging material. A large amount of charge accumulates on the surface of the solar cell