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Photovoltaic glass plated with double-layer antireflection film and preparation method thereof

The technology of photovoltaic glass and anti-reflection film is applied in the field of photovoltaic glass and its preparation, which can solve the problems of affecting the output power of photovoltaic modules of solar cells, large-scale preparation of photovoltaic glass, and low film thickness control accuracy, etc., and achieves low process cost and advantages. Significant, improved anti-reflection performance

Active Publication Date: 2012-12-19
CHANGZHOU ALMADEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a photovoltaic glass coated with a double-layer anti-reflection film for the problem that the current photovoltaic glass coated with a conventional single-layer anti-reflection film still has high reflection on visible light, which affects the improvement of the output power of the photovoltaic module of the solar cell.
[0005] The present invention also aims at the defect that the current sol-gel method does not have high control precision of film thickness for large-area film formation, and the sol-gel method cannot be used for large-scale preparation of photovoltaic glass coated with an ordinary multi-layer classical structure anti-reflection film. , providing a double-layer SiO that can be prepared by the sol-gel method, and the optical properties of the coated film system are less sensitive to the error of the single-layer film thickness. 2 / TiO 2 Preparation method of photovoltaic glass with anti-reflection film

Method used

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  • Photovoltaic glass plated with double-layer antireflection film and preparation method thereof
  • Photovoltaic glass plated with double-layer antireflection film and preparation method thereof
  • Photovoltaic glass plated with double-layer antireflection film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Mix and heat 0.1mol water, 0.035mol HCl and 1.5mol ethanol with stirring. When the temperature reaches the set temperature of 30°C, quickly add 0.0235mol tetrabutyl titanate and mix and stir for 30 hours to obtain a stable and transparent titanium oxide sol, which is aged for 3 days stand-by.

[0039] With the photovoltaic glass as the substrate, the aging titanium oxide sol is coated on the surface of the photovoltaic glass by the pulling method. The pulling speed is 2mm / s, and the number of pulling is 1 time. Photovoltaic glass with titanium dioxide gel film. The photovoltaic glass coated with the transparent titanium dioxide gel film prepared above is heat-treated in the air at 550°C for 1 minute, and a photovoltaic glass sample coated with a titanium dioxide film with a thickness of about 20 nm and good adhesion to the film base can be obtained.

[0040] 0.25mol water, 0.078mol NH 3 ·H 2 O and 4.75 mol of absolute ethanol were mixed and heated with stirring. When...

Embodiment 2

[0044] Mix and heat 0.1175mol water, 0.01175mol HCl and 1.175mol ethanol with stirring. When the temperature reaches the set temperature of 30°C, quickly add 0.0235mol tetrabutyl titanate and mix and stir for 30 hours to obtain a stable and transparent titanium oxide sol, which is aged for 3 days stand-by.

[0045] With the photovoltaic glass as the substrate, the aging titanium oxide sol is coated on the surface of the photovoltaic glass by the pulling method. The pulling speed is 2mm / s, and the number of pulling is 1 time. Photovoltaic glass with titanium dioxide gel film. The above-mentioned photovoltaic glass coated with transparent titanium dioxide gel film is heat-treated in air at 200° C. for 3 hours to obtain a photovoltaic glass sample coated with a titanium dioxide film with a thickness of about 25 nm and good adhesion to the film base.

[0046] Mix 0.05 mol of water, 0.05 mol of hydrochloric acid and 3 mol of absolute ethanol with stirring and heating. When the tem...

Embodiment 3

[0050] Mix and heat 0.0235 mol of water, 0.05875 mol of acetic acid and 5.875 mol of ethanol. When the temperature reaches the set temperature of 30°C, quickly add 0.0235 mol of tetrabutyl titanate and mix and stir for 30 hours to obtain a stable and transparent titanium oxide sol, which is aged for 3 days. stand-by.

[0051] With the photovoltaic glass as the substrate, the aging titanium oxide sol is coated on the surface of the photovoltaic glass by the pulling method. The pulling speed is 2mm / s, and the number of pulling is 1 time. Photovoltaic glass with titanium dioxide gel film. The above-mentioned photovoltaic glass coated with transparent titanium dioxide gel film is heat-treated in the air at 300°C for 0.5 hour, and a photovoltaic glass sample coated with a titanium dioxide film with a thickness of about 5 nm and good adhesion to the film base can be obtained.

[0052] Mix 0.05 mol of water, 0.15 mol of hydrochloric acid and 4.75 mol of absolute ethanol with stirrin...

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Abstract

The invention discloses photovoltaic glass plated with a double-layer antireflection film, wherein the double-layer antireflection film comprises a high refraction index oxide layer plated on the surface of the photovoltaic glass and a low refraction index porous silicon oxide layer plated on the high refraction index oxide layer; and high refraction index oxide is selected from one of titanium dioxide, zinc oxide and zirconium oxide. The photovoltaic glass plated with the double-layer antireflection film has higher transmissivity to visible light wavebands which are good for improving the power of a solar battery, simultaneously has lower transmissivity to far infrared wavebands which are harmful to improving the power of the solar battery and is remarkable in advantages; and meanwhile, the invention also discloses a preparation method of the photovoltaic glass, which has low cost and simple technical routes and is suitable for industrial production.

Description

technical field [0001] The invention relates to a photovoltaic glass surface treatment method, in particular to a photovoltaic glass coated with a double-layer anti-reflection film and a preparation method thereof. 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 cell photovoltaic modules, the conversion efficiency of crystalline silicon cells in solar photovoltaic modules is close to the limit value, and it becomes very difficult to continue to rely on improving the efficiency of the cells themselves to increase the actual output power of photovoltaic modules. At present, people generally use a photovoltaic glass with a low iron content as the packaging glass for photovoltaic modules of solar cells. This glass has a high transmittance in the visible light band. However, due to the difference in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/34C03C17/23
Inventor 王彪宋伟杰张贤鹏黄金华崔平林金锡
Owner CHANGZHOU ALMADEN
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