Solar-cell glass self-cleaning anti-reflection light-converting coating

A solar cell and anti-reflection technology, which is applied in the field of new energy and solar cell materials, to achieve moderate volatility, safety, environmental protection, price, and good anti-reflection effect

Inactive Publication Date: 2014-10-15
TIANJIN VOCATIONAL INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of mutual offset between various functions of the existing solar cell glass self-cleaning anti-reflection light conversion multifunctional coating, and to invent a bismuth and terbium-doped titanium dioxide photocatalyst, which can also be used as a self-cleaning material and a light conversion material And anti-reflection auxiliary materials, in the presence of a small amount of photocatalyst and visible light irradiation can achieve self-cleaning effect, stabilize and improve the light transmittance of solar cell glass

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The solar cell glass self-cleaning anti-reflection light conversion coating of the present invention is composed as follows by mass percentage:

[0058] 5% alkaline nano-SiO 2 Hydrosol (average particle size 20nm) 50.0%

[0059] 5% acid nano-SiO 2 Hydrosol (average particle size 10nm) 25.0%

[0060] Bismuth and terbium doped with 5% nano-TiO 2 Hydrosol (average particle size 10nm) 15%

[0061] Ammonium nitrate [NH 4 NO 3 ] 0.5%

[0062] nitric acid [HNO 3 ] 0.5%

[0063]5% surfactant aqueous solution 2.0%

[0064] 5% coupling agent aqueous solution 2.0%

[0065] Deionized water balance.

[0066] Apply the above multi-functional paint roller to 10 pieces of solar cell glass samples of 300mm×300mm×3.2mm, heat and cure in sections at 80-150°C for 3 minutes to obtain a blue-purple solar coated glass, and the thickness of the film layer is about 150nm. , The average light transmittance in the wavelength range of 280nm-1100nm is 93.7%. Put it on the solar cell gl...

Embodiment 2

[0068] Example 1 The production process of the self-cleaning anti-reflection light conversion coating is as follows: to a 2000mL reactor equipped with a mechanical stirrer, a thermometer, a dropping funnel and a condenser tube, successively add 1300mL of ethanol with a mass percentage concentration of 94%, deionized 180mL of water, 2.0g of ammonia water with a concentration of 10% by mass and 360g of ethyl silicate with a concentration of 99% by mass, stirred and reacted at 15-30°C for 4-6 hours, stood and aged for 12 hours, added Deionized water 2000mL, at 60-65 ℃ vacuum distillation to separate the contained ethanol, to obtain alkaline nano-SiO with a concentration of 5% by mass 2 Hydrosol 2000g, record hydrosol average particle diameter 20nm, transfer to the jar and store for subsequent use.

[0069] To the above 2000mL reactor, successively add 650mL of ethanol with a concentration of 94% by mass, 180mL of deionized water, 15g of dilute nitric acid with a concentration of ...

Embodiment 3

[0076] The solar cell glass self-cleaning anti-reflection light conversion coating of the present invention is composed as follows by mass percentage:

[0077] 5% alkaline nano-SiO 2 Hydrosol (average particle size 20nm) 50.0%

[0078] 5% acid nano-SiO 2 Hydrosol (average particle size 10nm) 10.0%

[0079] Bismuth and terbium doped with 5% nano-TiO 2 Hydrosol (average particle size 10nm) 5%

[0080] Ammonium nitrate [NH 4 NO 3 ] 0.5%

[0081] nitric acid [HNO 3 ] 0.5%

[0082] 5% surfactant aqueous solution 0.5%

[0083] 5% coupling agent aqueous solution 0.5%

[0084] Deionized water balance.

[0085] Apply the above self-cleaning high anti-reflection coating to 10 solar cell glass samples of 300mm×300mm×3.2mm, heat and cure in sections at 80-150°C for 3 minutes to obtain a blue-purple solar coated glass, and measure the film layer The thickness is 150nm, and the average light transmittance in the wavelength range of 280nm-1100nm is 94.5%. It is clamped on the sol...

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Abstract

The invention relates to a solar-cell glass self-cleaning anti-reflection light-converting coating which has the function of photocatalysis in the ultraviolet range and the visible light range of the solar spectrum, and a production method thereof. The main component, having the self-cleaning function, in the formula adopted by the coating is bismuth terbium doped nano TiO2 hydrosol, while the auxiliary components are alkaline nano SiO2 hydrosol and acidic nano SiO2 hydrosol. After the coating, a bismuth terbium doped bismuth titanate photocatalyst and a bismuth terbium doped titanium dioxide photocatalyst taking silicon dioxide as a carrier are formed at the tempering temperature of glass, and besides, the two photocatalysts can be used as a light-converting material and an anti-reflection material for improving a sunlight transmittance. According to the invention, the problem that various functions of the conventional solar-cell glass multifunctional coating tend to counteract with each other is solved, the solar-cell glass light transmittance can be stabilized and increased, and the conventional solar-cell glass anti-reflection coating can be replaced.

Description

technical field [0001] The invention relates to a self-cleaning anti-reflection light conversion coating for solar cell glass containing bismuth and terbium doped nano-titanium dioxide, which has photocatalytic function in the ultraviolet and visible light ranges of the solar spectrum and its production method, belonging to new energy and solar cell materials field. Background technique [0002] Crystalline silicon solar cell modules generally consist of a glass cover plate, a cell silicon wafer, a cell back sheet, and ethylene-vinyl acetate (EVA) copolymer film adhesive and pressure-encapsulated, and then installed into a fixed frame. The visible light transmittance of solar cell module packaging glass is generally 91.6%, and its single surface reflectance is 4%. If a layer of anti-reflection film with a thickness of 150-200nm is coated on the surface of the solar glass, the visible light reflectance of the single surface of the solar glass can be reduced to less than 1%, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00
Inventor 李建生刘炳光王少杰
Owner TIANJIN VOCATIONAL INST
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