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Suede-making additive for low-reflectivity monocrystalline silicon

A monocrystalline silicon texturing and low reflectivity technology, which is applied in the direction of single crystal growth, single crystal growth, crystal growth, etc., can solve the problems of high power generation cost and lack of competitiveness, so as to reduce surface reflectivity and improve photoelectricity. The effect of conversion efficiency and good practical value

Inactive Publication Date: 2012-07-18
苏州先拓光伏科技有限公司
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Problems solved by technology

However, an important bottleneck restricting the widespread use of crystalline silicon solar cells is the high cost of power generation, which is not yet competitive with traditional thermal power generation.

Method used

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  • Suede-making additive for low-reflectivity monocrystalline silicon
  • Suede-making additive for low-reflectivity monocrystalline silicon
  • Suede-making additive for low-reflectivity monocrystalline silicon

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Embodiment Construction

[0018] This specific embodiment adopts the following technical scheme: the formula component of low reflectivity monocrystalline silicon texturing additive is sodium tripolyphosphate, sodium butylnaphthalene sulfonate and deionized water, and it is applied to the suede surface of monocrystalline silicon wafer During fabrication, the average value of the surface reflectance of the single crystal silicon wafer within the wavelength range of 400nm-1100nm can be reduced from about 10% at present to less than 8%.

[0019] The concrete example of this embodiment is as follows:

[0020] Example 1. Sodium tripolyphosphate, sodium butylnaphthalene sulfonate and deionized water are mixed with low-reflectivity monocrystalline silicon texturing additives. The concentration of sodium tripolyphosphate is 8wt%, and the concentration of sodium butylnaphthalenesulfonate is 2wt%. . Then the monocrystalline silicon texturing additive with low reflectivity is added to the aqueous solution of sod...

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Abstract

The invention relates to the technical field of crystalline silicon solar cell production, in particular to a suede-making additive for low-reflectivity monocrystalline silicon. Formula components comprise sodium tripolyphosphate, butyl naphthalenesulfoni and deionized water. When the additive is used for suede-making of the monocrystalline silicon, average value of surface albedo of a monocrystalline silicon sheet in a wavelength range of 400 nm to 1100 nm can be reduced to below 8% from current 10%, and an even, small and dense suede pyramid can be obtained. The suede-making additive can improve photoelectric conversion efficiency of a crystalline silicon solar cell, is favorable for stabilizing technology of the crystalline silicon solar cell, and has good practical value.

Description

Technical field: [0001] The invention relates to the technical field of crystalline silicon solar cell production, in particular to a low-reflectivity monocrystalline silicon texturing additive. Background technique: [0002] Solar energy is a clean and sustainable energy, and solar photovoltaic power generation technology is an important way to utilize solar energy. It can not only directly convert solar energy into electrical energy, but also without any mechanical rotation or movement during the conversion process, and will not emit gas And Smell, therefore, has received strong support from governments around the world. The crystalline silicon solar cell is the protagonist in the field of photovoltaic power generation technology. So far, crystalline silicon solar cells occupy more than 90% of the entire photovoltaic market. However, an important bottleneck restricting the widespread use of crystalline silicon solar cells is the high cost of power generation, which is no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B33/10C30B29/06
Inventor 屈盛
Owner 苏州先拓光伏科技有限公司
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