Monocrystal texturing additive, preparation method and application thereof
The invention discloses a single crystal texturing additive which comprises the following raw material components in percentage by mass: 2%-16% of chitosan quaternary ammonium salt, 0.6%-0.9% of sodium citrate, 0.4%-0.8% of potassium chloride and the balance of pure water. According to the invention...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses a single crystal texturing additive which comprises the following raw material components in percentage by mass: 2%-16% of chitosan quaternary ammonium salt, 0.6%-0.9% of sodium citrate, 0.4%-0.8% of potassium chloride and the balance of pure water. According to the invention, a solution mixing reagent added into a potassium hydroxide or sodium hydroxide solution is used for texturing monocrystalline silicon, the solution is clearer and more transparent compared with other types of additives, and no impurity is generated in the texturing process, so that a part of post-cleaning links can be omitted, and the cost is reduced; the size of the formed suede is about 1-4 microns, the suede is densely distributed, alcohol substances are not needed, the main texturing effective substance is the chitosan quaternary ammonium salt, the chitosan quaternary ammonium salt is a chitosan high-grade derivative prepared by preparing chitosan through a series of reactions by taking shells of marine organ |
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