How to make solar panels?

We all know that solar panels have a great impact on our production and life, so how are solar panels made? What is the production process of solar panels? Let us take a look together next.

Here is the content list:

• Slicing, cleaning and preparing suede of solar panels

• Etch the periphery of the solar panel, remove the back PN+ junction, and make the upper and lower electrodes

• Production of anti-reflection film, sintering, and testing of solar panels

Slicing, cleaning and preparing suede of solar panels

The slicing of the solar panel adopts multi-line cutting, and the silicon rod is cut into square silicon wafers. Use the conventional silicon wafer cleaning method to clean the solar panel, and then use an acid (or alkali) solution to remove 30-50um from the cutting damage layer on the surface of the solar panel silicon wafer. The silicon wafer is anisotropically etched with an alkaline solution to prepare a suede on the surface of the silicon wafer of the solar panel.

Etch the periphery of the solar panel, remove the back PN+ junction, and make the upper and lower electrodes

The solar panel uses a coating source (or a liquid source, or a solid phosphorous nitride sheet source) for diffusion. The solar panel is made into a PN+ junction, and the junction depth is generally 0.3-0.5um. The diffusion layer formed on the peripheral surface of the solar panel silicon wafer during diffusion will short-circuit the lower electrodes of the solar panel. Masked wet etching or plasma dry etching is used to remove the peripheral diffusion layer of the solar panel. The PN+ junction on the back of the solar panel is removed. Commonly used wet etching or grinding method to remove the PN+ junction on the back of the solar panel.

Production of anti-reflection film, sintering, and testing of solar panels

Solar panels use vacuum evaporation, electroless nickel plating, or aluminum paste printing and sintering processes. First, make the bottom electrode of the solar panel, and then make the electrode of the solar panel. Aluminum paste printing is a widely used process method. Making solar panel anti-reflective film: In order to reduce the reflection loss of solar panels, it is necessary to cover a layer of anti-reflective film on the surface of the solar panel silicon wafer. The materials used to make the anti-reflection film for solar panels include MgF2, SiO2, Al2O3, SiO, Si3N4, TiO2, Ta2O5, etc. The process method can be the vacuum coating method, ion coating method, sputtering method, printing method, PECVD method or spraying method, etc. Solar panel sintering is the sintering of solar panel chips on a nickel or copper base plate. Solar panel test classification: solar panels are standardized according to specified parameters, and solar panels are tested and classified.

The manufacturer of Anhui JF Solar Technology Co., Ltd. (JF Solar) has injected a lot of technical support and capital investment in the production of solar panels. It is to make the produced solar panels meet product specifications and meet consumer needs. If you are interested in solar panels, you can contact us. Our website is https://www.jf-solartech.com/.