Yellow tungsten oxide powder for preparing large area electrochromic glass is a typical representative of cathode electrochromic materials. The large-area electrochromic glass assembled using tungsten trioxide film as the electrochromic layer is one of the main development directions of building energy conservation in the future. It is reported that the glass curtain walls applying with such smart glass can save more than 20% of peak demand of electricity.

Tungsten trioxide powder for preparing large area electrochromic glass is a cathode coloring material with durable electrochromic properties and a large light modulation range. Also, WO3 is a well-developed electrochromic material. Besides, it is more and more well-known as it is an environmentally friendly heat insulation material with high transparency. So, smart windows of tungsten trioxide are more and more widely applied in glass curtain walls and many other large area glasses.

WO3 for preparing large area electrochromic glass is an inorganic electrochromic material. And tungsten trioxide is also a cathode coloring material in accordance with the coloring way. As you may have known, electrochromic glass is a functional glass, also a kind of smart glass, which not only can adjust the transmittance of visible light, but also has a shielding effect on infrared light in the colored state. In other words, such smart glass can play the role of heat insulation without affecting indoor lighting.

Tungsten oxide is an inorganic electrochromic material that can adjust the visible light transmittance and solar radiant energy of large area electrochromic glass in accordance with human will. In other words, electrochromic technology provides a new solution for energy saving in modern buildings.

Yellow tungsten oxide can be prepared into a tungsten oxide film and then be used as an electrochromic layer material for assembling a large area electrochromic glass – a smart window for green building. Also, tungsten trioxide electrochromic film can be applied to produce display device and thermal control device. Increasing commercial applications make tungsten trioxide receive extensive research and more attention.

Tungsten trioxide is a typical representative of cathode coloring materials. As an important material of an electrochromic layer of large area electrochromic glass, WO3 can change the transmittance of glass. Specifically, WO3 can change the optical transmittance (reflectance or absorbance) when ions move in or out.

F-doped cesium tungsten bronze may be applied for preparing smart glass as it has good visible light transmittance and near-infrared shielding properties. And it is reported that F doping cesium tungsten bronze has higher visible light transmittance and better near-infrared shielding performance than undoped cesium tungsten bronze. This is because the fluorine atom replaces the oxygen atom, increases the band gap and generates carriers.

F-doped cesium tungsten bronze may be used for preparing electrochromic smart window with excellent near-infrared shielding properties, and therefore such smart window may be applied in energy saving reconstruction of building. While do you know how to prepare F doping CsxWO3 with better near-infrared shielding performance? It requires a discussion of the effect of precursor mixing order on F-doping cesium tungsten bronze.

F-doped cesium tungsten bronze for manufacturing smart window can be prepared by low-temperature hydrothermal method. For example, some experts have prepared F-doping cesium tungsten bronze with good near-infrared shielding properties by hydrothermal synthesis method, using cesium carbonate (Cs2CO3), tungstic acid (mWO3•nH2O) as raw materials, sodium fluoride (NaF) or hydrofluoric acid (HF) as fluorine source, and citric acid as inducer.

F-doped cesium tungsten bronze may be applied for preparing window heat insulation film. According to experts, the key to improve the near-infrared shielding performance of F-doping cesium tungsten bronze is to select a suitable heat treatment time and temperature. But what effect does heat treatment have on F doped cesium tungsten bronze?