Degreasing monocrystalline silicon piece texture surface making liquid and preparation method thereof

Abstract

The invention discloses degreasing monocrystalline silicon piece texture surface making liquid. The degreasing monocrystalline silicon piece texture surface making liquid is characterized by being prepared from, by weight, 0.5-1 part of sodium hydroxide, 3-5 parts of auxiliaries, 1-2 parts of triethylene glycol momobutyl ether, 0.3-0.5 part of lauryl sodium sulfate, 1-2 parts of sodium tripolyphosphate, 0.3-0.5 part of sodium caseinate, 0.3-0.5 part of etidronic acid, 0.3-0.5 part of peregal, 0.1-0.2 part of white mineral oil and 80-100 parts of water. According to the texture surface making liquid, the consistency and repeatability of a texture surface making process are effectively improved, the density of a fabric surface is increased, and therefore the efficiency of a solar cell is improved, and product quality is improved. No IPA is included, environmental protection and human health are facilitated, and safety and environment friendliness are achieved.

Description

technical field [0001] The invention relates to silicon wafer texturing technology, in particular to a monocrystalline silicon wafer texturing liquid for removing oil stains and a preparation method thereof. Background technique [0002] With the increasingly serious energy crisis, solar energy has become the most potential alternative energy in the future, and the solar cell industry is developing rapidly. One of the problems restricting its development is how to improve the photoelectric conversion efficiency of solar cells and reduce costs. Among them, the texturing process is an important step to improve the photoelectric conversion efficiency. [0003] Texturing is also called "surface texturing". The effective textured structure makes the incident light reflect and refract multiple times on the surface of the silicon wafer, which increases the light absorption and reduces the reflectivity, which helps to improve the performance of the battery. The chemical etching me...

AI Technical Summary

Problems solved by technology

IPA is quite toxic and harmful to the human body. At the same time, IPA is easy to volatilize in the process of making wool and has adverse effects on the environment.

In addition, in the pre-cleaning process, the silicon wafer is not cleaned cleanly, and the surface of the silicon wafer is prone to abnormalities such as stains such as oil stains and fingerprints.