Mo-doping tungsten oxide electrochromic film for thermal insulating glass can be prepared by spray coating method. Experts have found that the electrochromic devices assembled with a Mo-doped WO3 nano film prepared by spray coating have a small light modulation range in the visible region. According to experts, this is because the prepared tungsten trioxide electrochromic film has poor electrochromic properties. So, what make the electrochromic performance of tungsten oxide electrochromic film poor?

Mo-doping tungsten oxide film can be used as an electrochromic layer and assembled into an electrochromic device by thermocompression film method. While how to assemble electrochromic devices by hot pressing film method?

As an electrochromic material, WOx film can be steady-state WO3 film or metastable tungsten oxide, experts said. Well, as you may have known, there are many types of electrochromic materials, including inorganic electrochromic materials, and organic electrochromic materials, etc. The WOx film is an inorganic electrochromic film.

Porous tungsten trioxide electrochromic film can be prepared by sol-impregnation pulling method. In this regard, experts said that preparing tungsten oxide film by this method has the advantages of simple equipment and low film forming cost. Also, you can prepare an electrochromic thin film of large glass area, which is now the important research direction for smart buildings.

Porous tungsten oxide film is a transparent heat insulating film with superior electrochromic properties than the conventional dense tungsten oxide film. And its possibility of being applied to electrochromic glass is often studied. While you should prepare the object of study firstly. So, how to prepare such a tungsten trioxide heat-insulating film?

Tungsten trioxide, as the first discovered and the most typical inorganic electrochromic material, has been deeply concerned by experts in many fields such as heat insulation. Well, as you may have known, the prepared film is known as an electrochromic film or a thermal insulating film, for applying in smart buildings. While what you may not know is that some experts have conducted comparative experiments on porous WO3 nanofilm and ordinary dense WO3 thin films.

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.

WO3 electrochromic film for energy-saving glass is an electrochromic material that has characteristics of good ionic and electronic conductivity, high contrast, color change efficiency, cycle period, writing/wiping efficiency and other electrochromic properties. And it is also well known as a functional material.

WO3 electrochromic film for smart glass can be prepared by a sol-gel method. For example, experts use tungstate as a raw material to prepare tungsten oxide electrochromic thin film with nanostructure on a ceramic substrate by sol-gel method. The experts also adjusted the parameters of different links in the process to observe the effect of parameter changes on the process results. Experts also applied positive and negative voltages to the electrochromic thin film electrodes to verify and test their electrochromic properties.

WO3 electrochromic film for electrochromic smart window can be prepared by electrophoretic deposition. There are more explorations in preparation of tungsten trioxide electrochromic thin films by electrophoretic deposition abroad. And there are relatively rare related research done in China.