Using Electrodeposition Method Produce Tungsten Trioxide

Tungsten oxide films can render color by light irradiated with appropriate energy (photochromic) or by using an electric field (electrochromic), this property makes it be widely used at electrochromic windows, large information display and automotive mirrors and so on. There are many ways to product tungsten trioxide films including physical deposition method and chemical deposition method, but these methods are high production costs and it is difficult to form a large-area film. But electrodeposition method produce WO3 films that not only economic and then prepared and easy production of large-area thin film, the most important is photochromic and electrochromic properties of WO3 films is well. WO3 Films setting method is : Pt plate as an anode, BP conductive glass as cathode, cathodic electrodeposition in the greenhouse, reacting with 0.5mol / L NA2WO4 solution, the constant current density is 2.00A / cm2, obtained WO3 film dry at red light first, then heat-treated for 3 hours at 400 ℃, the film after the heat treatment is uniform, good adhesion, is displayed in the X-ray diffraction results, the WO3 film amorphous crystalline film.

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