A tungsten oxide electrochromic film composed of tungsten oxide powder can be used to assemble an electrochromic glass - a smart heat insulation window glass. According to experts, such heat insulation glass has five thin film layers sandwiched between two layers of glass. And the five-layer contains a transparent conductive layer, an electrochromic layer, an ion conducting layer (electrolyte layer), an ion storage layer, and another transparent conductive layer. So, do you know what the electrochromic mechanism of tungsten oxide heat insulating glass is?

The discoloration process of tungsten oxide for preparing smart heat insulation film is more complicated, and the mechanism is still controversial. Currently, the widely accepted and applied discoloration model is the dual injection model, namely the Fanghnan model.

Nano tungsten oxide is an important raw material for preparing large area electrochromic device. As you may have known, whether the discoloration is uniform or not will affect the electrochromic performance of the prepared device, so a device with discoloration uniformity is an ideal device. In fact, large-area electrochromic devices may exhibit discoloration unevenness. So, how to solve the problem of uneven discoloration of large-area electrochromic devices of tungsten oxide? Experts propose the following options:

Tungsten oxide film is an important electrochromic material. And WO3 film is also one of the most studied electrochromic materials. But do you know why WO3 electrochromic film is the most popular electrochromic material?