Velvet manufacturing solution of monocrystalline silicon additive
A technology of texturing liquid and additives, applied in crystal growth, post-processing details, post-processing, etc., can solve problems such as difficult single crystal silicon, and achieve the effect of uniform size, controllable size, and uniform textured pyramid
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[0025] A monocrystalline silicon additive texturing solution, which is composed of an alkaline etching solution, a surfactant, and an organic acid or salt, wherein the amount of the surfactant is equivalent to 0.05% to 0.5% of the mass or volume of the alkaline etching solution (for example, 0.05% , 0.2%, 0.5%), the amount of organic acid or salt is equivalent to 0.1% to 10.0% of the mass or volume of the alkaline corrosion solution (eg 0.1%, 5%, 10%). Described alkaline etchant is by the sodium hydroxide (or potassium hydroxide, sodium carbonate, potash, sodium silicate or sodium phosphate) of 0.2%~5% (for example 0.2%, 2%, 5%) mass percent A corrosive solution composed of one or several kinds) and water.
[0026] Organic acid or salt is one or more of fatty acids containing 4-10 carbons or fatty acid salts containing 4-10 carbons and phenyl fatty acids (such as butyric acid, pentanoic acid, heptanoic acid, tartaric acid or sodium benzoate) ; The surfactant is one or more of...
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