Texturing additive, texturing liquid and preparation method and application of texturing additive and texturing liquid

Abstract

The invention relates to the field of monocrystalline silicon battery manufacturing, in particular to a texturing additive as well as a preparation method and application thereof, and the texturing additive comprises the following components in percentage by weight: 1-5% of alkyl sulfonate, 0.15-1% of polyacrylamide, 0.5-5% of alkylphenol polyoxyethylene ether and the balance of water. The texturing additive can induce different crystal faces on the surface of the silicon wafer in the texturing process, so that an octahedral textured structure is formed on the surface of the silicon wafer, the prepared octahedral textured structure is stable and can be tightly and uniformly distributed on the surface of the silicon wafer, and the texturing additive has the advantages of being simple in preparation method and low in raw material cost.

Description

technical field [0001] The invention relates to the field of single crystal silicon cell manufacturing, in particular to a texturing additive, a texturing liquid and a preparation method and application thereof. Background technique [0002] The rapid economic growth of countries around the world and the increasing demand for energy by humans have led to the rapid shortage of non-renewable resources such as oil, natural gas, and coal mines. Environmental pollution and energy shortages have become factors that seriously restrict social development. [0003] Solar energy is a real green energy, because it is inexhaustible and has become an urgent need of human society. An important way to apply solar energy to life is photovoltaic power generation. Silicon wafers are the most important raw materials in the photovoltaic power generation industry. By increasing the absorption of light on the surface of the silicon wafer, not only the efficiency of the crystalline silicon solar ...

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Problems solved by technology

[0010] The present invention aims to overcome the defect that the texture structure prepared by the texture additive in the prior art has a relatively small specific surface area and a short optical path, so that its light trapping effect is poor, and provides a texture additive, a texture liquid and Its preparation method and application to overcome the above-mentioned defects

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