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Environment-friendly monocrystalline silicon piece texturing liquid and preparation method thereof

A single-crystal silicon wafer, environmentally friendly technology, applied in chemical instruments and methods, crystal growth, post-processing details, etc., can solve the problems of easy volatilization of IPA, adverse effects on the environment, and harm to the human body, and improve product quality. Conducive to environmental protection and easy to degrade

Inactive Publication Date: 2015-12-02
CHINALAND SOLAR ENERGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

IPA is quite toxic and harmful to the human body. At the same time, IPA is easy to volatilize in the process of making wool and has adverse effects on the environment.

Method used

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Examples

Experimental program
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Embodiment Construction

[0015] Non-limiting examples of the present invention are as follows:

[0016] An environment-friendly monocrystalline silicon wafer texturing solution is prepared from the following component raw materials in weight (kg):

[0017] Sodium Hydroxide 0.5, Additive 3, Sodium Citrate 2, Lauryl Dimethyl Betaine 0.5, Diethanolamide Cocoate 0.2, Konjac Glucomannan 0.01, Glycerin 1, Polysorbate-800.1, Water 80;

[0018] Among them, the auxiliary agent is made of the following raw materials by weight (kg): saponin 10, nano-titanium dioxide 0.1, ammonium persulfate 0.1, vinyl acetate 1, sodium bicarbonate 0.2, dodecyl glucoside 1, water 100; The preparation method of the agent is to grind the saponins into powder, add the obtained saponins powder, sodium bicarbonate and lauryl glucoside into water at 80°C and 200r / min and stir for 4h, filter after cooling, and add acetic acid to the filtrate Vinyl ester and nano-titanium dioxide were dispersed ultrasonically for 5 minutes, then 2% amm...

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PUM

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Abstract

The invention discloses environment-friendly monocrystalline silicon piece texturing liquid. The environment-friendly monocrystalline silicon piece texturing liquid is characterized by being prepared from, by weight, 0.5-1 part of sodium hydroxide, 3-5 parts of additives, 2-4 parts of sodium citrate, 0.5-1 part of dodecyl dimethyl betaine, 0.2-0.4 part of coco fatty acid diethanol amide, 0.01-0.02 part of konjac glucomannan, 1-2 parts of glycerin, 0.1-0.2 part of polysorbate-80 and 80-100 parts of water. By means of the environment-friendly monocrystalline silicon piece texturing liquid, the consistency and the repeatability of the texturing technology are effectively improved, and the density of the texturization surface is increased, so that the efficiency of a solar cell is improved, and the production quality is improved; IPA is not contained, environmental protection and human health are facilitated, the main raw materials are easy to degrade, residues in the environment do not exist, pollution does not exist, and the environment-friendly monocrystalline silicon piece texturing liquid is green and environmentally friendly.

Description

technical field [0001] The invention relates to silicon wafer texturing technology, in particular to an environment-friendly monocrystalline silicon wafer texturing liquid and a preparation method thereof. Background technique [0002] With the increasingly serious energy crisis, solar energy has become the most potential alternative energy in the future, and the solar cell industry is developing rapidly. One of the problems restricting its development is how to improve the photoelectric conversion efficiency of solar cells and reduce costs. Among them, the texturing process is an important step to improve the photoelectric conversion efficiency. [0003] Texturing is also called "surface texturing". The effective textured structure makes the incident light reflect and refract multiple times on the surface of the silicon wafer, which increases the light absorption and reduces the reflectivity, which helps to improve the performance of the battery. The chemical etching meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B33/10
Inventor 郭万东孟祥法董培才陈伏洲
Owner CHINALAND SOLAR ENERGY
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