Abstract: The present invention provides a vehicle antifouling element that comprises a layer comprising a p-type semiconductor and a thin film that comprises an n-type semiconductor that is laminated on the surface of the p-type semiconductor layer. The thin film comprises a photocatalytic activity and the film thickness thereof is equal to or more than 5 nm and less than 60 nm.

Abstract: The present invention provides a vehicle antifouling element that comprises a layer comprising a p-type semiconductor and a thin film that comprises an n-type semiconductor that is laminated on the surface of the p-type semiconductor layer. The thin film comprises a photocatalytic activity and the film thickness thereof is equal to or more than 5 nm and less than 60 nm.

Abstract: A coating agent including photocatalyst particles dispersed in a titanium peroxide solution obtainable by causing titanium hydroxide (orthotitanic acid) gel to act with hydrogen peroxide being used as a material for the photocatalyzer film is used to a photocatalyzer film having photocatalyst particles supported therein. By forming a porous hydrophilic substance film on the photocatalyzer film, the defects of the film caused by the wiping can be prevented. Also, a film formed by using the coating agent including photocatalyst particles dispersed in a titanium peroxide solution at a temperature of from normal room temperature to 200° C. is of high porosity in comparison with a film formed at a higher temperature and with a film not having a photocatalyst particles dispersed therein. Consequently, the photocatalyzer film and the hydrophilic substance film have good adhesion property when use with each other.

Abstract: This invention provides a composite device whereby surface reflection and interference colors can be inhibited, photocatalytic decomposition performance may be improved and hydrophilicity-acquiring rate may be improved. A mixture film (14) is deposited on the surface of a base (12). The mixture film (14) is a colorless and transparent mixture film with a high light transmittance made of a mixture of boron oxide and photocatalytic titanium oxide.

Abstract: This invention provides a composite device whereby surface reflection and interference colors can be inhibited, photocatalytic decomposition performance may be improved and hydrophilicity-acquiring rate may be improved. A mixture film (14) is deposited on the surface of a base (12). The mixture film (14) is a colorless and transparent mixture film with a high light transmittance made of a mixture of boron oxide and photocatalytic titanium oxide.

Abstract: In the present invention, a coating agent comprising photocatalyst particles dispersed in a titanium peroxide solution obtainable by causing titanium hydroxide (orthotitanic acid) gel to act with hydrogen peroxide being used as a material for the photocatalyzer film is used to a photocatalyzer film (18) having photocatalyst particles (18) supported therein. By forming a porous hydrophilic substance film (12) on the photocatalyzer film (18), the defects of the film caused by the wiping can be prevented. Also, a film formed by using the coating agent comprising photocatalyst particles dispersed in a titanium peroxide solution at a temperature of from normal room temperature to 200° C. is of high porosity in comparison with a film formed at a higher temperature and with a film not having a photocatalyst particles dispersed therein. Consequently, the photocatalyzer film (18) and the hydrophilic substance film (12) have good adhesion property when use each other.

Abstract: This invention provides a composite device whereby surface reflection and interference colors can be inhibited, photocatalytic decomposition performance may be improved and hydrophilicity-acquiring rate may be improved. A mixture film (14) is deposited on the surface of a base (12). The mixture film (14) is a colorless and transparent mixture film with a high light transmittance made of a mixture of boron oxide and photocatalytic titanium oxide.

Abstract: In an anti-fog element comprising a substrate, a photocatalyzer film formed on the surface of the substrate, and a porous hydrophilic film formed thereon, and a process for forming the same, a titanium peroxide solution obtainable by causing a titanium peroxide gel (orthotitanic acid) to act with hydrogen peroxide is used as a material for the photocatalyzer film. When the titanium peroxide solution is used to form a photocatalyzer film, an anatase type titanium dioxide film can be obtained at a low temperature, for example, of 200° C. Consequently, in the course of the fabrication of the anti-fog element, any alkaline substance is difficult to be dispersed into the photocatalyzer film and, thus, even if a soda lime glass is used as the substrate, no film for preventing the alkali dispersion is required. For this reason, no photocatalytic property is impaired even if no film for preventing the alkali dispersion is provided.

Abstract: This invention provides a composite device whereby surface reflection and interference colors can be inhibited, photocatalytic decomposition performance may be improved and hydrophilicity-acquiring rate may be improved. A mixture film (14) is deposited on the surface of a base (12). The mixture film (14) is a colorless and transparent mixture film with a high light transmittance made of a mixture of boron oxide and photocatlytic titanium oxide.