JP3178698U - Solar cell component coating cover glass - Google Patents

Abstract

[PROBLEMS] To provide a high photoelectric conversion rate, strong self-cleaning ability, high hardness of the coating layer on the glass surface, excellent durability, can effectively protect the glass, simple structure, low cost, Provide solar cell component cover glass that is easy to mass-produce.
A transparency increasing layer to be coated on a glass substrate is provided, and the transparency increasing layer is provided with fine holes formed by a hole forming method. The diameter range of the micropores is 20 nm to 40 nm, and the thickness of the light transmittance increasing layer is 70 nm to 155 nm, more preferably 145 nm to 155 nm. The light transmittance increasing layer is constituted by a light transmittance increasing layer containing silicon oxide or titanium oxide or silicon oxide and titanium oxide.
[Selection] Figure 1

Description

The present invention relates to solar energy PV cell technology, and more particularly to a solar cell component coating cover glass.

Solar energy photoelectric conversion in solar cell components is generally performed by absorption of the solar energy spectrum of the silicon chip. With the development of process technology, the current photoelectric conversion efficiency of silicon has already reached its limit, and further improvement seems to be difficult. As long as the transmissivity of the glass substrate used as the cover material in solar cell components can be increased, more solar energy can be absorbed by the silicon chip, and photoelectric conversion efficiency can be improved. It is a point.

Solar energy ultra-white plate glass has high light transmittance, strong light absorption ability, and excellent high temperature resistance and aging resistance under various climatic conditions, and has the performance required by solar energy PV cell components. The solar cell component cover glass usually uses a solar energy ultra-white plate glass as a glass substrate because it satisfies well. In order to further improve the light transmittance of the glass substrate, a film layer that improves the light transmission efficiency is obtained by coating on the glass substrate, and the light transmittance of the solar energy ultra-white plate glass is remarkably improved. Thus, the photoelectric conversion rate of the solar cell component can be improved. However, the solar energy ultra-white glass substrate of the film layer obtained by such a coating process is desired to be further improved only by increasing the light transmittance by 2%. Currently, there are mainly vacuum magnetron sputter coating method and sol-gel method as the manufacturing method of coating glass, but the former uses magnetron sputtering technology to create multiple layers of complex films and coat them in various colors. The film layer is excellent in corrosion resistance and wear resistance, but the investment cost of the equipment is high, and the manufacturing cost of the coating glass is also high. The latter is easy to process, but the product is not well decorated, applied to the preparation of small samples in the laboratory, not to mass production, coated glass products with a uniform and large area required by use Can't meet the needs of Therefore, there is an urgent need to provide a solar cell component coating glass that can increase the transmissivity, improve the photoelectric conversion efficiency of solar energy, and facilitate mass production.

The object of the present invention is to provide a solar cell component coating glass that can overcome the disadvantages existing in the existing technology, increase the light transmittance, improve the photoelectric conversion efficiency of solar energy, and easily realize mass production. .

The present invention comprises a glass substrate. The glass substrate is provided with a light transmittance increasing layer coated on the glass substrate, and the light transmittance increasing layer is provided with a solar cell component coating cover glass having fine holes formed by a hole forming method. provide.
The diameter of the micropore is 20 nm to 40 nm.
The thickness range of the light transmittance increasing layer is 70 nm to 155 nm.
The thickness range of the light transmittance increasing layer is 145 nm to 155 nm.
The light transmittance increasing layer is a light transmittance increasing layer composed of silicon oxide, titanium oxide, or silicon oxide and titanium oxide.
During the coating, the fine pores are filled with a pore forming agent, and fine pores are formed by volatilization of the pore forming agent during solidification drying.
The fine pores are formed by adding a pore-forming agent such as ethanol or isopropanol or ethanol and isopropanol at the time of coating, and volatilizing the pore-forming agent during solidification drying.
The solar cell component coating cover glass of the present invention uses a spray coating method to uniformly install a light transmittance increasing layer on a glass substrate, and to form fine holes formed by a hole forming method on the light transmittance increasing layer. By installing, the transmissivity can be further improved and has the following advantages over the existing technology.

When the visible light having a wavelength of 380 nm to 1100 nm is transmitted, the formed solar cell component coating cover glass has a light transmittance of 2.5 as compared with the uncoated one. % And photoelectric conversion rate will increase by 2.5%.
Due to its strong self-cleaning ability and excellent hydrophilicity, contaminants are easily washed.
The coating layer on the glass surface has high hardness and excellent durability, and provides effective protection for the glass.
Excellent weather resistance and long lasting.
Simple structure, low cost and easy mass production.

Sectional drawing of the solar cell component coating cover glass structure of this invention.

Embodiments of the present invention will be described below. The specific implementation method of the solar cell component coating cover glass of the present invention is as shown in FIG. It consists of a glass substrate 1, in which the glass substrate 1 is provided with a light transmission increasing layer 2 coated on the glass substrate 1, and the light transmission increasing layer 2 is formed by a hole forming method. Fine holes 3 are installed. Using the spray coating method, the transmissivity increasing layer 2 can be uniformly installed on the glass substrate, a large-area work can be realized, and the output of the product can be improved. The fine hole 3 is installed in the light transmittance increasing layer 2, and the light transmittance can be further improved, and the photoelectric conversion efficiency of solar energy can be improved.

Specifically, the diameter range of the fine holes 3 is 20 nm to 40 nm, and the diameter of the fine holes 3 is silicon oxide or titanium oxide or silicon oxide and titanium oxide contained in the light transmittance increasing layer 2. It is related to the nanogranule size of the product (eg, silicon dioxide, titanium dioxide) and the bonding mode of the organic pore-forming solvent.
Specifically, the thickness range of the light transmittance increasing layer 2 is 70 nm to 155 nm.
Further, specifically, the thickness range of the light transmittance increasing layer 2 is 145 nm to 155 nm, and the coating layer glass is not coated with the light transmittance when visible light having a wavelength of 380 nm to 1100 nm is transmitted. The transmissivity increases by 2.5% or more, and the photoelectric conversion rate also increases by 2.5% or more.
The light transmittance increasing layer 2 is a light transmittance increasing layer 2 containing silicon oxide or titanium oxide or silicon oxide and titanium oxide (for example, silicon dioxide, titanium dioxide). The titanium oxide (titanium dioxide) contained therein effectively utilizes ultraviolet energy in sunlight to decompose organic substances under the catalytic action of light so that they do not adhere to the glass surface. Ensure that the battery component coating cover glass is easily cleaned. More specifically, the fine holes 3 are filled with a hole forming agent during spray coating, and the fine holes 3 are formed by volatilization of the hole forming agent during solidification drying.
Specifically, the fine pores 3 are formed by volatilization of the pore-forming agent during solidification drying by adding a pore-forming agent such as ethanol or isopropanol or ethanol and isopropanol during spray coating. The fine holes 3 can be formed in the light-transmitting layer 2 by a laser irradiation drilling method.

The above embodiment is merely one embodiment of the present invention. It is for explaining the present invention, and does not limit the protection scope of the present invention. Although the present invention has been described in detail with reference to a relatively appropriate embodiment, a general engineer in this field can modify or equivalently replace the technical method of the present invention. It is easy to understand that the technical method of the present invention does not depart from the substance and scope.

1: Glass substrate, 2: Transmissivity increasing layer, 3: Micropore.

Claims (7)

A glass substrate and a light transmission increasing layer coated on the glass substrate;
The solar cell component coating cover glass, wherein the light transmittance increasing layer is formed with fine holes formed by a hole forming method. The solar cell component coating cover glass according to claim 1, wherein the diameter of the micropore is 20 nm to 40 nm. The solar cell component coating cover glass according to claim 1, wherein a thickness of the light transmittance increasing layer is 70 nm to 155 nm. The solar cell component coating cover glass according to claim 3, wherein a thickness of the light transmittance increasing layer is 145 nm to 155 nm. The solar cell component coating cover glass according to any one of claims 1 to 4, wherein the light transmittance increasing layer is a light transmittance increasing layer of silicon oxide or titanium oxide. 2. The solar cell component coating cover according to claim 1, wherein a pore forming agent is put into the micropores during spray coating, and the pores are formed by volatilization of the pore forming agent during solidification drying. Glass. The micropore is formed by adding a pore forming agent such as ethanol or isopropanol or ethanol and isopropanol during spray coating, and the pore forming agent volatilizes during solidification drying. 6. The solar cell component coating cover glass according to 6.

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