Monocrystalline silicon texturing additive and preparation method thereof, monocrystalline silicon texturing method and silicon wafer with pyramid
CN119465413APending Publication Date: 2025-02-18TRINA SOLAR CO LTD
Patent Information
- Application Number
- CN202411582138.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2025-02-18
AI Technical Summary
Technical Problem
The existing single-crystal silicon velvet-making additives have problems such as large surface pyramids, unevenness, long time to make velvet-making or difficulty in effectively reducing reflectivity.
Method used
A single crystal silicon velvet-making additive is provided, including suede etching agents, suede regulators, suede modifiers and surfactants. Through the synergistic action of these components, a uniform and dense pyramid structure is formed on the surface of the silicon wafer. .
Benefits of technology
Significantly reduce the reflectivity of the silicon wafer surface, improve the photoelectric conversion efficiency of solar cells, and improve the quality of fleece and the optimization of suede structure.
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Figure CN119465413A_ABST
Abstract
The invention relates to the technical field of monocrystalline silicon wafer preparation, and mainly provides a monocrystalline silicon texturing additive, a preparation method thereof, a monocrystalline silicon texturing method and a silicon wafer with a pyramid. The monocrystalline silicon texturing additive comprises the following components in percentage by mass: 0.01%-1.0% of a texturing etching agent; 0.001 to 1.0 percent of a suede conditioning agent; 0.01%-1.0% of a suede modifier; 0.01%-1.0% of a surfactant; and the balance deionized water. Wherein the suede etching agent comprises organic sulfonate, the suede conditioning agent comprises a polyamine high-molecular compound, the suede modifying agent comprises a hydrophilic high-molecular polymer, and the surface active agent comprises carboxylic acid sodium salt. The monocrystalline silicon texturing additive in the technical scheme of the invention can significantly reduce the reflectivity of the surface of a silicon wafer and improve the photoelectric conversion efficiency of a solar cell.
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Citation Information
Cited By
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