Monocrystalline silicon flocking additive
A single-crystal silicon texturing and crystalline silicon texturing technology, which is applied in the directions of crystal growth, post-processing details, and post-processing, can solve the problems of uneven texturing size, high chemical consumption, and poor texturing repeatability. The effect of uniform texturing pyramid, reduced chemical consumption and lower production costs
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Embodiment 1
[0014] Example 1. (1) Preparation of additives: Add 5% sodium dodecylbenzenesulfonate, 10% polyphosphate, 5% lactic acid, and 8% sulfuric acid to 72% deionized water, mix well and prepare into a texture additive. (2) Prepare an alkaline texturing liquid, and dissolve potassium hydroxide in deionized water to obtain an alkaline texturing liquid, wherein the mass percentage of potassium hydroxide is 1.8%. The prepared additive is added into the texturing liquid to obtain the texturing agent. Dip the monocrystalline silicon wafer of the solar cell into the texturing agent for texturing.
Embodiment 2
[0015] Example 2. (1) Preparation of additives: Add 10% sodium dodecylbenzenesulfonate, 15% polyphosphate, 5% lactic acid, and 8% sulfuric acid to 62% deionized water, mix well and prepare into a texture additive. (2) Prepare an alkaline texturing liquid, and dissolve potassium hydroxide in deionized water to obtain an alkaline texturing liquid, wherein the mass percentage of potassium hydroxide is 1.2%. The prepared additive is added into the texturing liquid to obtain the texturing agent. Dip the monocrystalline silicon wafer of the solar cell into the texturing agent for texturing.
Embodiment 3
[0016] Example 3. (1) Preparation of additives: 20% by mass of sodium dodecylbenzenesulfonate, 18% of polyphosphate, and 5% of sulfuric acid were added to 57% of deionized water, and mixed evenly to prepare a texturing additive. (2) Prepare an alkaline texturing liquid, and dissolve potassium hydroxide in deionized water to obtain an alkaline texturing liquid, wherein the mass percentage of potassium hydroxide is 1.5%. The prepared additive is added into the texturing liquid to obtain the texturing agent. Dip the monocrystalline silicon wafer of the solar cell into the texturing agent for texturing.
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