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Efficiency increasing method of solar cell glass low-efficiency antireflection film

An anti-reflection film and solar cell technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of reducing the light transmittance of glass, complex cost, blocking incident sunlight, etc., to improve weather resistance and self-cleaning ability, Solve safety and environmental protection problems, the effect of simple process and equipment

Active Publication Date: 2018-06-01
GUANGDONG GUANHAO HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because the glass cover of crystalline silicon solar cells is gradually covered by dust or industrial pollutants in the atmospheric environment, which reduces the light transmittance of the glass and reduces the efficiency of solar cells by 10%-30%.
At present, the pollutants on the surface of solar cells are mainly cleaned manually or mechanically, which greatly shortens the life of the solar cell glass anti-reflection coating, especially in the harsh humid and hot environment, the life of the solar cell glass anti-reflection The silicate formed by the hydrolysis of nano-silica in the reflective film has a significant blocking and absorbing effect on incident sunlight
[0004] At present, the scientific and technical personnel in the industry are mainly focusing on the research of long-life anti-reflection coatings for solar cell glass. There is not much research on the repair and efficiency enhancement of existing low-efficiency anti-reflection coatings for solar cell glass, because the process of removing low-efficiency anti-reflection coatings is relatively complicated. and high cost, there is also the risk of environmental pollution caused by fluoride

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Use 20 mL of 2 mol / L ammonia water in a glass reactor to neutralize 10 mL of 2 mol / L titanyl sulfate solution to a pH of 8-9, and filter the generated Ti(OH) 4 The white precipitate was washed with deionized water until there was no sulfate ion; the Ti(OH) 4 The white precipitate was added to 10 mL of 0.2 mol / L nitric acid aqueous solution, heated and peptized at 60-70°C to form a transparent nano-titanium dioxide aqueous sol. Add 8.9g (0.05mol) of methyltriethoxysilane and 20.8g (0.1mol) of ethyl orthosilicate into the nano-titanium dioxide hydrosol, hydrolyze at 30-40°C for 4h, and then heat and reflux for 0.5-1h to make the methyl triethoxysilane Triethoxysilane and ethyl orthosilicate are completely hydrolyzed, heated to 80-90°C to evaporate most of the ethanol and water, and further heated to 100-110°C to form organic silicon titanium resin, after cooling, add absolute ethanol to dilute to obtain quality 28.4 g of ethanol sol of organosilicon titanium resin with a...

Embodiment 2

[0043] A solar cell anti-reflection coated glass sample that has been placed outdoors for three years and has been aged is cut to a size of 100mm╳100mm, which is used as an experimental solar cell low-efficiency anti-reflection coated glass. Use 0.02% dodecyltrimethylammonium chloride by mass percentage concentration and 3% triethanolamine aqueous solution to spray and clean the glass sheet, then clean it with deionized water, and dry it in the air.

[0044] Apply a bar of silicone coating liquid containing high refractive index nano-titanium dioxide with a mass percentage concentration of 3% on the low-efficiency anti-reflection surface of solar cell glass, place it horizontally at room temperature for 10 minutes, and then cure it at 150°C for 4-6 minutes to form the first layer of anti-reflection film with a thickness of 170-180nm and a refractive index of 1.7-1.9. Apply the organic silicon coating solution with a mass percentage concentration of 3% on the surface of the fir...

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Abstract

The invention relates to an efficiency increasing method of a solar cell glass low-efficiency antireflection film, and particularly relates to a method of directly constructing a new efficiency increased double-layer wide-spectrum antireflection film system without removing the low-efficiency antireflection film so that the antireflection rate of the solar cell glass can be 3.0%-3.5% within the visible light region of 400-800nm. According to the technical scheme, the efficiency increasing method comprises four parts of cleaning of the solar cell glass low-efficiency antireflection film, filling and fixing of the solar cell glass low-efficiency antireflection film and preparation of the second layer of antireflection film of the solar cell glass. The low-efficiency antireflection film doesnot need to be removed, and the new antireflection film is ingeniously combined with the low-efficiency antireflection film so that using the dangerous and corrosive glass etchant can be avoided, theproblems of safety and environmental protection in application can be solved and the weatherability and the self-cleaning capacity of the antireflection film can be enhanced.

Description

technical field [0001] The invention relates to a method for synergizing low-efficiency anti-reflection coatings on solar cell glass, especially a method for directly constructing a new synergistic double-layer wide-spectrum anti-reflection coating anti-reflection system without removing the low-efficiency anti-reflection coatings, which belongs to the new The field of new energy materials. Background technique [0002] Crystalline silicon solar cell modules are generally composed of solar cell glass cover plate coated with anti-reflection film, solar cell silicon wafer, battery back plate and EVA film bonding and pressing package. The visible light transmittance of solar cell module packaging glass is generally 91.6%, and the single surface reflectance of solar glass is 4.2%. If a layer of anti-reflection film with a thickness of about 150nm is coated on the surface of the solar cell glass, the visible light transmittance can be increased by 2.5%-3.5%. The main component ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0216C03C17/34C09D183/04C09D7/61
CPCC03C17/009C03C17/34C08K2003/2241C08K2201/011C09D183/04H01L31/02168Y02E10/50
Inventor 张发荣李建生尹浩南刘炳光赵洋张腾葸彦娇
Owner GUANGDONG GUANHAO HIGH TECH
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