Antibacterial silicon wafer texturing agent and preparation method therefor

Abstract

The invention discloses an antibacterial silicon wafer texturing agent which is characterized by being prepared from the following raw materials in parts by weight: 1-2 parts of mycose, 1-2 parts of dipotassium glycyrrhizinate, 1.5-2.5 parts of sodium hydroxide, 0.5-1 part of lauramidopropylamine oxide, 0.3-0.5 part of polyoxyethylene sorbitol anhydride monooleate, 5-10 parts of a texturing adjustor, 0.3-0.5 part of mint oil, 0.2-0.4 part of ginger oil, 1-2 parts of sodium carboxymethylcellulose and 100-150 parts of water. The silicon wafer texturing agent disclosed by the invention not only can improve the texturing efficiency and the stability of a texturing process and reduce the use level of chemicals, but also has a good antibacterial function to prevent bacteria from breeding on the surface of the silicon wafer, so that the cleanness of the silicon wafer is improved, and the product is stable in quality, long in storage time and hard to deteriorate.

Description

technical field [0001] The invention relates to silicon wafer texturing technology, in particular to an antibacterial silicon wafer texturing agent and a preparation method thereof. Background technique [0002] Texturing is an important process in the production process of solar cells. Using the principle of anisotropic corrosion of single crystal silicon by low-concentration alkaline etching solution, a "pyramid" structure is formed on the surface of the silicon wafer to reduce the reflectivity of the silicon wafer surface and increase Absorb light, reduce reflectivity, and improve conversion efficiency of solar cells. At present, the conventional texturing process generally uses sodium hydroxide or potassium hydroxide, and adds a suitable mixed solution of isopropanol and sodium silicate for texturing. The isopropanol and other components used in the existing texturing liquid have large volatilization, poor environmental protection, short service life, large chemical con...

AI Technical Summary

Problems solved by technology

The isopropanol and other components used in the existing texturing liquid have large volatilization, poor environmental protection, short service life, large chemical consumption, low reaction controllability, and poor texturing repeatability, which directly affect product quality

However, if the surface of the silicon wafer is not clean, it is easy to cause problems such as stains and uneven suede.