Film-coating liquid of vanadium dioxide thin film and preparation method and application of thin film

A technology of vanadium dioxide and coating solution, which is applied in the preparation of vanadium dioxide thin film, in the field of preparing vanadium dioxide thin film with high visible light transmittance and infrared intelligent control ability, which can solve the problem of low infrared control performance and visible light transmission. Low efficiency, high production cost and other problems, to achieve the effect of simple equipment requirements, high visible light transmittance, and good film quality

Inactive Publication Date: 2010-08-18
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems of low visible light transmittance, low infrared control performance, high preparation cost and complex process faced by vanadium dioxide thin film as an intelligent energy-saving material, the invention discloses a liquid phase method for preparing vanadium dioxide thin film , its precursor is a compound of vanadium in a tetravalent state, low toxicity and easy to control the heat treatment process

Method used

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  • Film-coating liquid of vanadium dioxide thin film and preparation method and application of thin film
  • Film-coating liquid of vanadium dioxide thin film and preparation method and application of thin film
  • Film-coating liquid of vanadium dioxide thin film and preparation method and application of thin film

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Experimental program
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Effect test

Embodiment 1

[0054] Preparation of undoped vanadium dioxide thin films

[0055] (1) Preparation of coating solution:

[0056] Take 1g of vanadyl acetylacetonate (molar concentration is 0.06Mol / L), after simple grinding, put the obtained powder into a 100ml beaker, add 40ml of a mixed solution of methanol, alcohol and propanol, wherein the volume of methanol, alcohol and n-propanol The ratio is 2:1:2, put into a magnetic stirrer and stir. Add a total of 20ml of mixed additives of oleic acid, ethylene glycol and glycerin (the mass percentage of mixed additives is 40%), wherein the volume ratio of oleic acid, ethylene glycol and glycerin is 1:1:2, stir and age for one week A coating solution for the vanadium dioxide thin film is obtained.

[0057] (2) Clean the substrate:

[0058] Select the substrate as quartz glass, and use the standard RCA process to clean it to remove organic matter, dust and metal ion impurities on the surface. Afterwards, the substrate was dried in an oven at 60°C f...

Embodiment 2

[0073] Vanadium dioxide thin film doped with 3 mole percent tungsten

[0074] (1) Preparation of coating solution:

[0075] Take 10g of vanadyl acetylacetonate and 0.28g of tungstic acid. After simple grinding, put the resulting powder into a 500ml beaker, add 200ml of a mixed solution of methanol, alcohol and propanol, wherein the volume ratio of methanol, alcohol and propanol is 2: 1:2, placed in a magnetic stirrer and stirred. Add a total of 0.2ml of mixed additives of oleic acid and hydrochloric acid (the mass percentage of mixed additives is 0.1%), wherein the volume ratio of oleic acid and hydrochloric acid is 1:1, stir and age to obtain doped vanadium dioxide Thin film coating solution.

[0076] (2) Clean the substrate:

[0077] Select the substrate as quartz glass, and use the standard RCA process to clean it to remove organic matter, dust and metal ion impurities on the surface. After that, put the substrate into a 60°C oven for drying treatment before use.

[00...

Embodiment 3

[0083] Preparation of vanadium dioxide thin film doped with 0.07% tungsten by mole

[0084] (1) Preparation of coating solution:

[0085] Take 10g of vanadyl acetylacetonate and 0.0066g of tungstic acid, after simple grinding, put the obtained powder into a 100ml beaker, add 250ml of a mixed solution of methanol and n-propanol, wherein the volume ratio of methanol and n-propanol is 2:1, put Stir in a magnetic stirrer. Add a total of 20ml of mixed additives of oleic acid, hydrofluoric acid and hydrogen peroxide (the mass percentage of mixed additives is 16%), wherein the volume ratio of oleic acid, hydrofluoric acid and hydrogen peroxide is 5:1:1. After stirring and aging for one week, the coating solution of the vanadium dioxide thin film was obtained.

[0086] (2) Clean the substrate:

[0087] Select the substrate as quartz glass, and use the standard RCA process to clean it to remove organic matter, dust and metal ion impurities on the surface. Afterwards, the substrate ...

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Abstract

The invention belongs to the field of chemical functional materials and discloses a film-coating liquid of a vanadium dioxide thin film and a preparation method and application of the vanadium dioxide thin film. The film-coating liquid of the vanadium dioxide thin film comprises the following solutes in percentage by weight: a compound of tetravalent vanadium with the mol concentration of 0.001-10Mol / L and addictive with mass percentage of 0.01-40, wherein the addictive is selected from one or more of oleinic acid, hydrochloric acid, hydrofluoric acid, aqueous ammonia, hydrogen peroxide, glycol, glycerol, oleyl amine, cetyl trimethylammonium bromide, tetraproylammonium bromide and polyving akohol. The invention also discloses a preparation method of the vanadium dioxide thin film and can obtain a rutile type vanadium dioxide thin film with high visible transmissivity and infrared intelligent regulation and control capability, so that the thin film prepared by the method can meet energy-saving windows with different application requirements. The invention has the advantages of simple preparation process, favorable safety and suitability for large-scale industrial preparation and generalization.

Description

technical field [0001] The invention belongs to the field of functional materials, and relates to a method for preparing a vanadium dioxide thin film, in particular to a method for preparing a vanadium dioxide thin film with high visible light transmittance and infrared intelligent control ability through a chemical solution approach. Background technique [0002] The bulk single crystal vanadium dioxide material undergoes a reversible phase transition around 68 °C, and the temperature rises from a semiconductor phase with a monoclinic structure to a metal phase with a tetragonal structure. In this process, physical quantities including optical, electrical, and magnetic properties undergo mutations. Take optical properties as an example: at low temperature (<68°C), the vanadium dioxide material is a semiconductor with a band gap of 0.6eV, which has high transmittance in the infrared region; at high temperature (>68°C), vanadium dioxide is transformed into Weak metals ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/27
Inventor 高彦峰张宗涛杜靖康利涛罗宏杰
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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