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Preparation method of photovoltaic glass surface antireflection film

A technology of photovoltaic glass and anti-reflection film, applied in the field of photovoltaic glass surface treatment, can solve the problems of attenuation of anti-reflection performance, easy water absorption and deliquescence of the film layer, easy falling off of the film, etc. The effect of corrosion

Active Publication Date: 2012-07-04
CHANGZHOU ALMADEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, no patents have been found that use the sol-gel method to prepare anti-reflective coatings specifically for photovoltaic module packaging, and if the methods disclosed in existing patents are directly used in the photovoltaic field, there are usually many problems, for example, with the substrate The bonding performance of the glass is poor, the film is easy to fall off, and it is not resistant to scrubbing; the surface of the anti-reflection film layer is covered with a large number of hydroxyl groups, which makes the film layer easy to absorb water and deliquescence. Its anti-reflection performance will gradually attenuate or even fail completely.

Method used

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  • Preparation method of photovoltaic glass surface antireflection film
  • Preparation method of photovoltaic glass surface antireflection film
  • Preparation method of photovoltaic glass surface antireflection film

Examples

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Embodiment 1

[0023] Embodiment 1: 0.1mol water, 0.035mol NH 3 ·H 2 O and 5 mol of absolute ethanol were mixed, stirred and heated, and when the temperature reached the set temperature of 30°C, 0.05 mol of tetraethyl orthosilicate (TEOS) was quickly added to keep the temperature constant, and the stirring was continued for 30 hours to obtain a stable and transparent silica sol A , slowly add 0.003mol γ-aminopropyltriethoxysilane into 0.3mol absolute ethanol, and keep stirring for 5min to obtain solution B. Slowly drop solution B into sol A and stir for 5 minutes to obtain an organic-inorganic-organic hybrid silica sol, which is aged for 10 days before use.

[0024] The film is coated by the pulling method, the pulling speed is 2mm / s, the number of pulling is 3 times, and the transparent silica gel film can be obtained after natural drying after the pulling. The gel film prepared above was treated in an atmosphere of tridecafluorooctyltriethoxysilane at a temperature of 50-150° C., and the...

Embodiment 2

[0026] Embodiment 2: 0.1mol water, 0.035mol NH 3 ·H 2 O and 5mol ethylene glycol were mixed and stirred and heated. When the temperature reached the set temperature of 30°C, 0.05mol tetraethyl orthosilicate (TEOS) and 0.05mol γ-aminopropyltriethoxysilane were quickly added and mixed and stirred for 30 hours to obtain a stable Transparent inorganic-organic hybrid silica sol. Aging for 10 days for use.

[0027] Coating the aged organic-inorganic hybrid silica sol with the pulling method, the pulling speed is 2mm / s, the number of pulling is 3 times, and the transparent silica gel film can be obtained by natural drying after pulling. The gel film prepared above was treated in an atmosphere of tridecafluorooctyltriethoxysilane at a temperature of 50-150° C., and the treatment pressure was 2 atm. After the atmosphere treatment, the sample was heat-treated in the air at 300°C for 0.5 hours, and a silica-based anti-reflection film with high transmittance, good adhesion to the film ...

Embodiment 3

[0028] Embodiment 3: 0.25mol water, 0.078mol NH 3 ·H 2O and 5 mol of absolute ethanol were mixed, stirred and heated, and when the temperature reached the set temperature of 40°C, 0.05 mol of tetraethyl orthosilicate (TEOS) was quickly added to keep the temperature constant, and the stirring was continued for 30 hours to obtain a stable and transparent silica sol A , slowly add 0.02 mol of tridecafluorooctyltriethoxysilane into 0.3 mol of absolute ethanol, and keep stirring for 5 minutes to obtain solution B. Solution B was slowly dropped into sol A, and stirred for 5 minutes to obtain an inorganic-organic hybrid silica sol, which was aged for 10 days before use.

[0029] Coating the aged inorganic-organic hybrid silica sol with the pulling method, the pulling speed is 2mm / s, and the number of pulling times is 3 times. After the pulling is completed, it can be dried naturally to obtain a transparent silica gel film. The gel film prepared above was treated in a hexamethyldisi...

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Abstract

The invention discloses a preparation method of a photovoltaic glass surface antireflection film, which is characterized by comprising the following steps of firstly, preparing inorganic-organic hybrid silicasol; secondly, coating; thirdly, hydrophobic treatment; and fourthly, solidification treatment. Compared with the prior art, the invention has the advantages that the film-substrate cohesion between an antireflection film and substrate photovoltaic glass is stronger, and therefore, the wiping resistance of the coated photovoltaic glass surface antireflection film is enhanced; a layer of hydrophobic group with low surface energy is formed on the surface of the antireflection film, and therefore, the corrosion of moisture to a film microstructure is reduced, and the long service life ofthe coated photovoltaic glass is ensured; and the invention has low whole process cost and simple technical route and is suitable for industrial and large-scale application.

Description

technical field [0001] The invention relates to a method for treating the surface of photovoltaic glass, in particular to a method for preparing an anti-reflection film on the surface of photovoltaic glass. Background technique [0002] The worldwide energy shortage and environmental protection pressure have greatly promoted the development and application of solar cell photovoltaic modules. With the continuous optimization of solar cells and photovoltaic components, the conversion efficiency of crystalline silicon cells in solar photovoltaic components is close to the limit value. It is very difficult to continue to improve the efficiency of the cells themselves to increase the actual output power of photovoltaic components, but it can be achieved through Other ways to increase efficiency, such as increasing light intensity. At present, people generally use a photovoltaic glass with a low iron content as the packaging glass for photovoltaic modules of solar cells. This gla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/23
Inventor 倪志龙王彪杨晔宋伟杰
Owner CHANGZHOU ALMADEN
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