Mo-doping tungsten trioxide electrochromic film can be prepared by spray pyrolysis. For example, some experts have prepared a Mo-doped WO3 electrochromic thin film with uniform morphology by spray pyrolysis.
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The results show that when a negative pressure -3V is applied, the electrochromic device assembled from tungsten trioxide - molybdenum oxide composite electrochromic thin film has a light modulation range of 32.08% at a wavelength of 632.8 nm, and the response time can be controlled within 15s, and the coloring efficiency reaches 40.1 cm2/C. while the electrochromic device assembled from the tungsten trioxide electrochromic thin film has a light modulation range of 16.48% at a wavelength of 632.8 nm, a response time of 25s, and a coloring efficiency of 21.4 cm2/C. It can be seen that the tungsten oxide electrochromic thin film doping with Mo has better electrochromic properties. Well, to some extent, better electrochromic properties means better heat insulation performance and higher visible light transmittance, which is important for choosing a heat insulation smart film.
