Silicon dioxide/titanium dioxide double-layer antireflection film and preparation method thereof

An anti-reflection film and double-layer technology, applied in the field of solar cells, can solve the problems of low light transmittance of the anti-reflection film and obvious dependence on the light transmittance of the film layer, and achieve a large change range, small light transmittance fluctuation, and a change range. no effect

Inactive Publication Date: 2019-08-16
PERLIGHT SOLAR
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the light transmittance of the gel-coated anti-reflection film prepared by the traditional sol-gel method is low, and the light transmittance of the film layer is significantly dependent on the wavelength. In this experiment, the modified sol-gel method was used to prepare SiO 2 Acid-base sol and TiO 2 Sol, and apply it on the glass surface to prepare double-layer anti-reflection film with excellent performance

Method used

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  • Silicon dioxide/titanium dioxide double-layer antireflection film and preparation method thereof
  • Silicon dioxide/titanium dioxide double-layer antireflection film and preparation method thereof
  • Silicon dioxide/titanium dioxide double-layer antireflection film and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0027] Embodiment 1 sol and SiO 2 Granule preparation

[0028] (1) SiO 2 Sol preparation

[0029] SiO 2 Preparation of acid sol: First take a 250ml beaker, then weigh 23.365g TEOS, 98.000g EtOH, 8.075g deionized water, 0.327g HCl, stir on a magnetic stirrer for 3h, then seal with plastic wrap, and age in a cool and dry place for 3d . The prepared samples are marked as SiO 2 -a.

[0030] SiO 2 Preparation of alkali sol: First take a 250ml beaker, weigh 18.692g TEOS, 152.204g absolute ethanol, 3.230g deionized water, 2.512g ammonia water, stir on a magnetic stirrer for 3 hours, then seal with plastic wrap, and age in a cool and dry place 3d. The prepared samples are marked as SiO 2-b.

[0031] SiO 2 Preparation of acid-base sol: The sol obtained by catalyzing the above acid and base is mixed according to the mass ratio of acid to base at 1:2, and the prepared sample is marked as SiO 2 -a1b2. According to the above acid-base catalysis, the sol is obtained by mixing t...

Embodiment 2

[0036] The preparation of embodiment 2 anti-reflection film

[0037] (1) Cleaning of glass substrate

[0038] Rinse the glass substrate with tap water first, then rinse it with deionized water, then soak it in NaOH with a mass fraction of 20% for 20min, then rinse it with deionized water, and then put it into 15% HNO 3 Soak in water for 20 minutes, rinse with deionized water, then ultrasonically clean in deionized water for 5 minutes, then ultrasonically clean in absolute ethanol for 5 minutes, dry in a constant temperature drying oven at 80°C for 2 hours, take it out and store it for later use.

[0039] (2) Preparation of double-layer anti-reflection film

[0040] Turn on the power supply of the KW-4A glue homogenizer, adjust the low speed to 500r / min for 18s, adjust the high speed to 2000r / min for 30s, and then put the aged SiO 2 Take out the sol, use a plastic dropper to take 2 to 3 drops, and drop it into the glass substrate that has been placed on the glue homogenizer. ...

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Abstract

The invention belongs to the technical field of solar cells, in particular to a SiO2/TiO2 double-layer antireflection film and a preparation method thereof. A SiO2 acid-base sol and a TiO2 sol are respectively prepared by a sol-gel method, and the SiO2/TiO2 double-layer antireflection film is prepared by coating the SiO2 acid-base sol and the TiO2 sol on a glass substrate. The SiO2 acid-base sol is obtained by mixing a SiO2 acid sol and a SiO2 base sol according to a ratio of 1: 2-4, the SiO2 acid-base sol is diluted and added with SiO2 powder, the TiO2 sol is diluted, and the SiO2/TiO2 double-layer antireflection film is prepared by first coating the SiO2 sol and then coating the TiO2 sol. The SiO2/TiO2 double-layer antireflection film prepared by the method has high light transmittance,small fluctuation of light transmittance in the whole testing wavelength range, small change range, low wavelength selectivity and good hydrophilicity of the film layer, and is an antireflection filmwith a moth-eye structure with excellent performance.

Description

technical field [0001] The invention belongs to the technical field of solar cells, in particular to a SiO 2 / TiO 2 Double-layer antireflection film and its preparation method. Background technique [0002] In the past few years, the development of new antireflective sol-gel coatings has attracted great interest, mainly due to their relatively low cost and various potential applications. TiO 2 It is an important semiconductor material, which has been widely used in recent years, and its self-cleaning function has also been applied to the surface of different materials, such as ceramic tiles, glass, plastics and other materials. [0003] With the development of the global economy, the depletion of energy and the intensification of environmental problems year by year, renewable clean energy has become a major international strategic issue. my country's energy mainly comes from fossil energy such as coal and oil. In recent years, the reserves have become more and more The de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/34
CPCC03C17/3417C03C2217/212C03C2217/213C03C2217/734C03C2218/113
Inventor 赵东黄国波李冲韩得满赵波
Owner PERLIGHT SOLAR
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