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Deoiling and dewaxing monocrystalline silicon wafer texturing liquid and preparing method thereof

A technology of wax single crystal and texturing liquid, applied in the field of degreasing and dewaxing single crystal silicon wafer texturing liquid and its preparation, can solve the problems of high surface condition, easy volatilization of IPA, affecting product quality, etc. Conducive to environmental protection and human health, good degreasing and wax removal performance, and the effect of improving product quality

Inactive Publication Date: 2015-12-02
CHINALAND SOLAR ENERGY
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  • Summary
  • 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.
In addition, texturing has high requirements on the surface state of the original silicon wafer. Oil and stain residue on the surface of the silicon wafer will cause white spots on the surface of the silicon wafer and affect product quality.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

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

[0016] A kind of oil-removing and wax-removing monocrystalline silicon wafer texturizing liquid, is prepared from the component raw material of following weight (kg):

[0017] Sodium hydroxide 0.5, borax 0.5, additive 3, potassium cocoyl glycinate 0.3, polyvinylpyrrolidone 0.3, sodium stearate 0.1, octylphenol polyoxyethylene ether 0.1, glyceryl tricaprylate 0.5, 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 u...

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PUM

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Abstract

The invention discloses deoiling and dewaxing monocrystalline silicon wafer texturing liquid. The deoiling and dewaxing monocrystalline silicon wafer texturing liquid is characterized by being prepared from, by weight, 0.5-1 part of sodium hydroxide, 0.5-1 part of borax, 3-5 parts of auxiliaries, 0.3-0.5 part of potassium cocamidopropyl glycinate, 0.3-0.5 part of polyvinylpyrrolidone, 0.1-0.2 part of sodium stearate, 0.1-0.2 part of octyl phenol polyoxyethylene ether, 0.5-1 part of tricaprylin and 80-100 parts of water. The uniformity and repeatability of the texturing technology are improved by means of the texturing liquid, and the textured face density is increased, so that the efficiency of a solar cell is improved, and product quality is improved; the deoiling and dewaxing performance is high, the effect of treating fingerprints, oil dirt, white point and other raw materials is excellent, and the texturing liquid is free from IPA, which is beneficial for environmental protection and human health.

Description

technical field [0001] The invention relates to silicon wafer texturing technology, in particular to a degreasing and waxing 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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