Some experts have used pulsed DC reactive magnetron sputtering coating method to prepare Ti-WO3 electrochromic film on FTO transparent conductive glass under different substrate temperatures.

WO3 can be applied in electrochromic device. And it is mainly used as an inorganic electrochromic material or a cathode electrochromic material. According to experts, electrochromic devices have many of the same qualities as batteries so that they can be considered as thin film batteries that can be charged and discharged.

Mo-doping nanocrystalline WO3 electrochromic film can be prepared by spray pyrolysis. For example, some experts have prepared different concentrations of molybdenum doped nano crystalline tungsten trioxide electrochromic films by spray pyrolysis.

Tungsten trioxide powder, as an electrochromic material, can be applied to smart window, i.e., electrochromic device. Such electrochromic device is generally composed of five functional layers plated on the surface of the glass: a transparent conductive layer, a cathode discoloration layer, an electrolyte layer, an anode discoloration layer or ion storage layer and a transparent conductive layer.

Li-doped WO3 electrochromic film can be prepared by a sol-gel method. For example, some experts have prepared a Li doped tungsten trioxide electrochromic film by adding a LiCF3SO3 solution to a precursor solution using a sol-gel method.

Tungsten trioxide powder is an inorganic electrochromic material that is extremely important for applying in smart windows. And the application of WO3 material in electrochromic field is being gradually promoted. Speaking of electrochromism, it dates back to the early 1960s. At the time, Platt discovered electrochromism when studying organic pigments. After that, people began to pay attention to electrochromic materials.

WO3, mainly WO nano particles, or nano particle size tungsten trioxide, is an important cathode electrochromic material, which is classified according to the redox mode of the colored state of the inorganic electrochromic material, and the other type is an anode electrochromic material. The so-called cathode electrochromic material refers to a type of material which is colorless in the high-valent oxidation state and colored in the low-valent reduction state. In addition to tungsten trioxide, such materials are mainly molybdenum trioxide and titanium dioxide.

Nano crystalline tungsten oxide film is more and more widely applied in smart windows. And it is more and more common for people to know such an environmentally friendly heat insulation material. Therefore, it is imperative to prepare a WO3 electrochromic film with superior electrochromic properties in accordance with the needs of the times. So how to improve the electrochromic properties of the tungsten oxide electrochromic film?

Now, when it comes to electrochromism, many people think of tungsten trioxide. So, do you have a certain understanding of the mechanism of the electrochromic materials proposed by scientists? Scientists have proposed numerous models and assumptions. What are the models that are widely accepted and widely used?

WO3 smart window is one of the common new building energy saving solutions. As you may have known, the visible light transmittance, heat transfer coefficient, and heat shielding coefficient of passively regulated energy-saving glass such as low-emissivity glass, vacuum glass, and insulating glass are fixed in relation to glass lighting and energy saving. Therefore, these glasses cannot meet the requirements of all consumer groups. And therefore, smart glass using nano particle size tungsten trioxide as an electrochromic material appeared.