Method for preparing full nanometer granule visible light area antireflection film by layer upon layer self-assembly method

A layer-by-layer self-assembly and nano-particle technology, which is applied in the field of preparing all-nano-particle anti-reflection film in the visible light region by layer-by-layer self-assembly method, can solve the problems of narrow wavelength range, achieve low cost, improve anti-reflection effect, and make equipment simple effect

Inactive Publication Date: 2010-02-03
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent CN 101157522A discloses a method for preparing an anti-reflection film with high visibl

Method used

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  • Method for preparing full nanometer granule visible light area antireflection film by layer upon layer self-assembly method
  • Method for preparing full nanometer granule visible light area antireflection film by layer upon layer self-assembly method
  • Method for preparing full nanometer granule visible light area antireflection film by layer upon layer self-assembly method

Examples

Experimental program
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Embodiment 1

[0042] After the glass substrate is acid-washed, alkali-washed and dried, the transmittance of the white glass substrate in the visible light region is about 89%. A colloid containing magnesium-aluminum double hydroxide is prepared, and the colloid is composed of magnesium-aluminum double hydroxide powder and water, wherein the mass percentage of the magnesium-aluminum double hydroxide is 0.082wt%. Prepare silica-containing colloid by diluting commercially available silica sol with deionized water, wherein the mass percentage of silica is: 0.028wt%. At room temperature and normal pressure, first immerse a white glass sheet with a length of 76.2mm, a width of 25.4mm, and a thickness of 1mm in the colloid containing magnesium aluminum double hydroxide for 10 minutes, then rinse it with deionized water for 5 minutes, and then immerse it 15 minutes in colloidal silica, this is one layer. Repeat 4 times in turn to make it reach 4 layers. After drying, the transmittance was measur...

Embodiment 2

[0045] After the glass substrate was pickled and dried, the visible light transmittance of the glass substrate was 89%. At room temperature and normal pressure, first immerse a glass sheet with a length of 76.2mm, a width of 25.4mm, and a thickness of 1mm in the colloid containing magnesium aluminum double hydroxide for 20 minutes, then rinse it with deionized water for 5 minutes, dry it, and then Immerse in the colloid of titanium dioxide for 10 minutes, then rinse with deionized water for 5 minutes, and dry it as a layer. Repeat 8 times in order to make it reach 8 layers. The titanium dioxide colloid is self-made, wherein the titanium dioxide is an anatase phase, the grain size is about 7nm, and the mass percentage of the titanium dioxide is 0.053wt%. The magnesium aluminum carbonate double hydroxide colloid is prepared by ultrasonic dispersion of magnesium aluminum carbonate double hydroxide powder and water, wherein the mass percentage of the magnesium aluminum carbonate ...

Embodiment 3

[0048] After the glass substrate is acid-washed, alkali-washed and dried, the transmittance of the white glass substrate in the visible light region is about 89%. A colloid containing magnesium-aluminum double hydroxide is prepared, and the colloid is composed of magnesium-aluminum double hydroxide powder and water, wherein the mass percentage of the magnesium-aluminum double hydroxide is 0.082wt%. Prepare silica-containing colloid by diluting commercially available silica sol with deionized water, wherein the mass percentage of silica is: 0.028wt%. At room temperature and normal pressure, first immerse a white glass sheet with a length of 76.2mm, a width of 25.4mm, and a thickness of 1mm in the colloid containing magnesium aluminum double hydroxide for 10 minutes, then rinse it with deionized water for 5 minutes, and then immerse it 15 minutes in colloidal silica, this is one layer. Repeat 4 times in order to make it reach 4 layers, counted as glass / (magnesium aluminum carbo...

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Abstract

The invention relates to a method for preparing a full nanometer granule visible light area antireflection film by a layer upon layer self-assembly method, which comprises steps of: (1) scouring, alkali washing and drying a glass or quartzes substrate; (2) (a) soaking in colloid of magnalium layered double hydroxide for 3-20 minutes; (3) soaking in silicon dioxide sol or titanium dioxide sol for 3-20 minutes; (c) repeating the steps of (a) and (b) in sequence; (d) sintering for 0.5-4 hours in the temperature of 400-500 DEG C, thus obtaining the antireflection film. The method uses simple devices, has low cost and is suitable for industrialization production. The antireflection film has obvious effect in the visible light area; a multi-layer antireflection film formed on the surface of theglass can reach 97.4% of transmission rate at wave length of 550nm; and a multi-layer film containing titanium dioxide can reach no less than 93.7% of transmission rate at wave length of 550nm.

Description

technical field [0001] The invention belongs to the field of anti-reflection film preparation, and in particular relates to a method for preparing an anti-reflection film in the visible light region of all nano particles by a layer-by-layer self-assembly method. Background technique [0002] Materials with smooth and flat surfaces often reflect the light irradiated on the surface of the material to varying degrees, resulting in light pollution, unwanted images, and the use of larger glass windows to ensure the brightness of the room during the day. For silicon-based solar cells and dye-sensitized solar cells, the reflection effect also reduces the light-harvesting efficiency of the cell materials, reducing their photoelectric conversion efficiency. On the surface of many optical components, the decrease in transmittance due to reflection directly affects the sensitivity and resolution of the instrument. The front windshield of the car also has more than 10% specular reflect...

Claims

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Application Information

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IPC IPC(8): C03C17/34C04B41/52
Inventor 张青红毛睿奕王宏志李耀刚
Owner DONGHUA UNIV
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