Method for titania film growth in fluorine-based aqueous solution

A titanium dioxide, aqueous solution technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of increasing the supersaturation of the solution, unable to control the film orientation, unable to use the growth temperature, etc., to improve the crystallinity and realize the large-scale industry. The effect of less production and raw material consumption
CN101439873AInactive Publication Date: 2009-05-27UNIV OF JINAN
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF JINAN
Publication Date
2009-05-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for preparing an anatase titania film with high compactness and high catalytic activity on various matrixes. The method mainly comprises the following steps: firstly, precipitating a titania seed layer with an amorphous form on a matrix; secondly, placing the seed layer in a titanium salt solution which contains a titanium salt stabilizer and has the mol concentration of 0.01 to 0.2mol.L<-1> for growth; and cleaning and drying the grown film to obtain a product. The method improves the compactness of the film and enables the film to have the light transmittance as high as more than 80 percent in the visible light area; and the method also realizes the epitaxial growth of the film in a single c axis direction and greatly improves the crystallinity. In addition, the method adopts a low temperature process and cheap raw material and has little raw material consumption and a simple process, thereby greatly reducing the production cost. The prepared film has potential application prospect in the fields of solar cells, antifog and self-cleaning coating, interference coating, gratings, and microelectronic and electroluminescent devices.
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Description

technical field

[0001] The invention relates to a method for growing a titanium dioxide film in a fluorine-based aqueous solution, which can grow anatase TiO on various substrates 2 The thin film can increase the density of the titanium dioxide thin film and improve the crystal quality and crystal orientation of the thin film, and belongs to the technical field of preparation methods of semiconductor coating materials. Background technique

[0002] Titanium dioxide is a semiconductor material with a wide band gap (3.2 eV), which has good transmittance in the visible light region, and can absorb sunlight in the near-ultraviolet light region and show good photocatalytic activity. In addition, TiO 2 The film material also has excellent acid resistance, alkali corrosion resistance and high mechanical strength, and shows good adaptability in various environments. Therefore, TiO2 thin film materials can be widely used in the fields of photocatalytic degradation, solar cells, opt...

Claims

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