Efficient and environment-friendly monocrystalline silicon piece texture surface making liquid and preparation method thereof

A single crystal silicon wafer and texturing liquid technology, which is applied in the field of high-efficiency and environmentally friendly single crystal silicon wafer texturing liquid and its preparation field, can solve the problem of poor texturing effect on the surface of silicon wafers, easy volatilization of IPA, unstable texturing effect, etc. problems, to achieve good cleaning and decontamination effects, improve product quality, and be beneficial to environmental protection and human health.

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 has considerable toxicity and is harmful to the human body. At the same time, IPA is easy to volatilize in the process of making texture, which has adverse effects on the environment. The Problem With Larger Pyramids

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 high-efficiency and environment-friendly monocrystalline silicon wafer texturing liquid is prepared from the following component raw materials in weight (kg):

[0017] Sodium Hydroxide 0.5, Additive 3, Allantoin 2, Sodium Hyaluronate 0.1, Hydroxypropyl Methylcellulose 0.3, Sodium Lauroyl Glutamate 0.3, Sodium Cocoyl Isethionate 0.3, Hard Sucrose Fatty acid ester 0.1, 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 we...

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Abstract

The invention discloses efficient and environment-friendly monocrystalline silicon piece texture surface making liquid and a preparation method thereof. The efficient and environment-friendly monocrystalline silicon piece texture surface making liquid is characterized by being prepared from, by weight, 0.5-1 part of sodium hydroxide, 3-5 parts of auxiliaries, 2-4 parts of allantoin, 0.1-0.2 part of sodium hyaluronate, 0.3-0.5 part of hydroxypropyl methyl cellulose, 0.3-0.5 part of sodium lauroyl glutamate, 0.3-0.5 part of sodium cocoyl isethionate, 0.1-0.2 part of sucrose stearate and 80-120 parts of water. By means of the texture surface making liquid, the consistency and repeatability of the texture surface making process are effectively improved, the density of texture surfaces is improved, and therefore the solar cell efficiency is improved, and the product quality is improved; no IPA is contained, raw materials are easy to degrade, no residue is generated, environment protection and human health are facilitated, and the efficient and environment-friendly monocrystalline silicon piece texture surface making liquid is green and environmentally friendly.

Description

technical field [0001] The invention relates to silicon wafer texturing technology, in particular to an efficient 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 chemica...

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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