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Solar cell monocrystalline silicon-based texture production process

A solar cell and generation process technology, applied in crystal growth, circuits, photovoltaic power generation, etc., can solve the problems of low suede forming rate, and achieve the effect of high forming rate and increasing light absorption

Active Publication Date: 2020-10-20
江苏润阳世纪光伏科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tower base size of the "pyramid" suede produced by using this kind of solution is 4~6 microns, and the suede molding rate is low

Method used

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  • Solar cell monocrystalline silicon-based texture production process
  • Solar cell monocrystalline silicon-based texture production process

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Embodiment Construction

[0013] The following description serves to disclose the present invention to enable those skilled in the art to carry out the present invention. The preferred embodiments described below are only examples, and those skilled in the art can devise other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present invention.

[0014] The invention provides a solar monocrystalline silicon-based suede production process, which comprises the following steps:

[0015] Step (1): Coarse polishing process, before the suede is formed on the monocrystalline silicon solar cells, use potassium hydroxide solution to remove the cut damage layer on the silicon base surface to make the silicon base surface smooth;

[0016] Step (2): Pre-cleaning process, using a mixed solution of potassium h...

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Abstract

The invention relates to a solar cell manufacturing process, and discloses a process for producing a monocrystalline silicon-based textured surface of a solar cell. The process adopts the following steps: first, before forming the textured surface of a monocrystalline silicon solar cell, a potassium hydroxide solution is used to remove silicon Cut the damaged layer on the surface of the base to make the surface of the silicon base smooth; secondly, use a mixed solution of potassium hydroxide and hydrogen peroxide to form a silicon dioxide oxide layer on the smooth and flat silicon base; finally, use potassium hydroxide, potassium sorbate, acetic acid A mixed solution of sodium, defoamer, and surfactant generates a dense and uniform suede structure on the silicon base that forms the oxide layer.

Description

technical field [0001] The invention relates to a solar cell manufacturing process, in particular to a solar cell monocrystalline silicon-based suede forming process. Background technique [0002] In the solar cell production process, the source silicon wafer needs to be cleaned and textured to remove the surface damage layer during the cutting process, and to form a textured surface with a light-trapping structure to increase the number of refraction and reflection of light on the surface of the solar cell and increase light absorption. . At present, the commonly used cashmere method is chemical corrosion method. [0003] At present, the industry mainly uses a hydrophobic mixed solution of sodium hydroxide, ascorbic acid, sodium benzoate, defoamer, and surfactant for the generation of monocrystalline silicon-based suede. The size of the tower base of the "pyramid" type suede produced by using this kind of solution is 4-6 microns, and the molding rate of the suede is low. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/0236H01L31/18C30B33/10
CPCC09K13/02C30B33/10H01L31/02366H01L31/1804Y02E10/547Y02P70/50
Inventor 韩超
Owner 江苏润阳世纪光伏科技有限公司
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