Mo doped WO3 nanoparticles can be used to prepare an electrochromic thin film, and then be used in smart buildings to make the interior "warm in winter and cool in summer". Specifically, some experts have prepared high-quality molybdenum-doped tungsten trioxide nanoparticles by a simple, green solution doping technique. And these WO3 nanoparticles can be uniformly dispersed in water to form a stable nano-ink.
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The experts combined with in-situ thermal oxidation spraying technology to eliminate the large number of oxygen vacancy defects in the WO3 nano particles under the premise of maintaining the structure of the nanoparticles of WO3 film, thereby improving the light modulation range of the WO3 electrochromic film. The Mo-doped WO3 film has a light modulation range of 42.9% and a coloring time and response time of 10s and 7.5s, respectively. In addition, experts also mentioned that such spraying method solves the problem of the limitation of hydrothermal preparation of large-area films and the cycle stability of films prepared by electrodeposition.
