A kind of preparation method of high light transmittance coated photovoltaic glass

Abstract

The invention discloses a method for preparing high-transparency coated photovoltaic glass. The method comprises the following steps: (1) selecting photovoltaic glass, and forming a pyramid structure on the surface of photovoltaic glass by adopting the dry-etching or wet-etching technology; and (2) coating an antireflection film layer on the pyramid structure on the surface of the photovoltaic glass by adopting a chemical vapor deposition method to obtain the high-transparency coated photovoltaic glass. According to the method, the transparency of the coated photovoltaic glass is improved, and the long-term weather resistance of the photovoltaic glass is guaranteed.

Description

technical field [0001] The invention belongs to the field of solar cells, and in particular relates to a method for preparing a high-transmittance coated photovoltaic glass. Background technique [0002] At present, conventional photovoltaic coated glass on the market mainly uses increasing the porosity inside the film layer to improve the effect of anti-reflection. The inevitable increase of the rate will affect the weather resistance of the film layer, and the technology will fall into a bottleneck. Traditional anti-reflection coated glass such as figure 1 , where 1 is a silane coupling agent, 2 is silica particles, and 3 is a glass substrate. The silane coupling agent is used in the coating solution to simply bond the silica atoms together to form a film layer with internal pores. However, due to The silane coupling agent used cannot effectively prevent external substances (water vapor, impurities, dust) from invading the interior of the glass, so its durability is rela...

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Problems solved by technology

[0002] At present, conventional photovoltaic coated glass on the market mainly uses increasing the porosity inside the film layer to improve the effect of anti-reflection. The inevitable increase of the rate will affect the weather resistance of the film layer, and the technology will fall into a bottleneck

Traditional anti-reflection coated glass such as figure 1 , where 1 is a silane coupling agent, 2 is silica particles, and 3 is a glass substrate. The silane coupling agent is used in the coating solution to simply bond the silica atoms together to form a film layer with internal pores. However, due to The silane coupling agent used cannot effectively prevent external substances (water vapor, impurities, dust) from invading the interior of the glass, so its durability is relatively poor, and then the coating solution is coated on the surface of the glass by roller coating , such as the specific process such as figure 2 As shown in , where 4 is the photovoltaic glass, 5 is the coating solution, 6 is the application roller, and 7 is the reverse roller

[0003] The disadvantage of the above technology is that due to the open structure design of the film layer, the weather resistance is relatively poor

At the same time, due to the use of roller coating method to coat the glass surface, the uniformity of the film cannot be guaranteed, so the instability of the process may lead to fluctuations in the light transmittance of the coated glass, thereby affecting the output power of the solar module

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