Texturization method of monocrystalline silicon wafer
A single-crystal silicon wafer, texturing technology, applied in chemical instruments and methods, crystal growth, final product manufacturing, etc., can solve problems such as wide distribution, and achieve the effects of small size, cost reduction, and narrow distribution
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[0015] Example 1
[0016] The process steps are as follows:
[0017] 1. Configuration of texturing additives: 0.05g sodium perfluorooctyl sulfonate, 1g polyvinylpyrrolidone, 0.5g acrylic acid-maleic anhydride copolymer, 5g propylene glycol methyl ether, 0.1g sodium benzoate and 0.25g p-toluenesulfonic acid Sodium was dissolved in 100ml of deionized water in turn.
[0018] 2. Configure lye: dissolve 10g of sodium hydroxide in 990g of deionized water to obtain a 1% aqueous solution of sodium hydroxide.
[0019] 3. Configure alkaline texturing liquid: mix the texturing additive obtained in step 1 and the lye obtained in step 2 with a mass ratio of 0.5:100.
[0020] 4. Texturing process: immerse the monocrystalline silicon wafers for solar cells in the alkaline texturing liquid prepared in step 3 for surface texturing, the texturing temperature is 85°C, and the texturing time is 900s.
[0021] The formed pyramids are small in size, about 0.8-2μm, and have a narrow distribution. In addition...
Example Embodiment
[0022] Example 2
[0023] The process steps are as follows:
[0024] 1. Configure texturing additives: Dissolve 0.1g sodium perfluorooctanoate, 5g polyvinylpyrrolidone, 1g acrylic acid-maleic anhydride copolymer, 3g propylene glycol methyl ether, 0.2g sodium benzoate and 0.5g sodium p-toluenesulfonate to 100ml in turn Ionized water.
[0025] 2. Configure lye: Dissolve 15 g of potassium hydroxide in 985 g of deionized water to obtain a potassium hydroxide aqueous solution with a concentration of 1.5%.
[0026] 3. Configure alkaline texturing liquid: mix the texturing additive obtained in step 1 and the lye obtained in step 2 at a mass ratio of 1:100.
[0027] 4. Texturing process: immerse the monocrystalline silicon wafers for solar cells in the alkaline texturing liquid prepared in step 3 for surface texturing, the texturing temperature is 80°C, and the texturing time is 1200s.
Example Embodiment
[0028] Example 3
[0029] The process steps are as follows:
[0030] 1. Configure texturing additives: 0.2g sodium perfluorononenoxybenzene sulfonate, 0.3g perfluorooctylsulfonyl diethanolamine, 1g polyvinylpyrrolidone, 0.1g acrylic acid-maleic anhydride copolymer, 2g propylene glycol Methyl ether, 0.2g sodium benzoate and 2g sodium p-toluenesulfonate were sequentially dissolved in 100ml deionized water.
[0031] 2. Configure lye: dissolve 20 g of sodium hydroxide in 980 g of deionized water to obtain an aqueous solution of sodium hydroxide with a concentration of 2%.
[0032] 3. Configure alkaline texturing liquid: mix the texturing additive obtained in step 1 and the lye obtained in step 2 with a mass ratio of 0.1:100.
[0033] 4. Texturing process: immerse monocrystalline silicon wafers for solar cells in the alkaline texturing liquid prepared in step 3 for surface texturing, the texturing temperature is 88°C, and the texturing time is 600s.
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