WO3 Electrochromic Film Applied for Smart Window

WO3 electrochromic film for smart window can be produced by various preparation methods, such as electrophoretic deposition and sol-impregnation. Some experts have adopted these two methods to prepare tungsten oxide electrochromic films with different electrochromic properties.

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Experts found that the micro-performance and cyclic voltammetry performance of tungsten oxide electrochromic thin film prepared by electrophoretic deposition method under the conditions of electrophoresis voltage of 5V and electrophoresis time of 30min are relatively good, and the difference of fading transmittance is about 25%. In comparison, the performance of tungsten oxide thin film prepared by sol-impregnation method is more stable in cyclic voltammetry. In a word, the repeatability of cyclic voltammetry curve of such an electrochromic thin film prepared by sol-impregnation is better, and the difference between the transmittance of the colored state and the bleaching state is larger, so that it is more suitable for assembling an electrochromic device.

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