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Environmentally-friendly monocrystalline silicon wafer texturing liquor and preparation method thereof

A monocrystalline silicon wafer, green and environmentally friendly technology, applied in the direction of 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, so as to improve product quality and effectively Good for environmental protection and easy to degrade

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.

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 green environment-friendly monocrystalline silicon wafer texturizing liquid, is prepared from the following component raw materials of weight (kg):

[0017] Sodium hydroxide 0.5, xylitol 3, sodium lactate 2, gum arabic 0.3, sodium lauryl amphoacetate 0.5, caprylic / capric triglyceride 0.1, castor oil polyoxyethylene ether 0.1, additive 3, 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 ultrasonic...

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PUM

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Abstract

The invention discloses environmentally-friendly monocrystalline silicon wafer texturing liquor. The texturing liquor is characterized by comprising, by weight, 0.5-1 part of sodium hydroxide, 3-5 parts of xylitol, 2-4 parts of sodium lactate, 0.3-0.5 part of Arabic gum, 0.5-1 part of disodium lauryl amphoacetate, 0.1-0.2 part of caprylic / capric triglyceride, 0.1-0.2 part of castor oil polyethenoxy ether, 3-5 parts of auxiliaries and 80-100 parts of water. The texturing liquor effectively improves uniformity and repeatability of a texturing technology, increases the density of suede, then improves the efficiency of a solar battery and improves product quality; because the texturing liquor does not contain IPA, environmental protection and body health are facilitated, the raw materials are easy to degrade and have no residues in the environment, and the texturing liquor is environmentally friendly.

Description

technical field [0001] The invention relates to silicon wafer texturing technology, in particular to a green and 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 etc...

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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