Tungsten Trioxide Powder Applied for New Electrochromic Device

tungsten trioxide powder applied for new electrochromic device picture

Tungsten trioxide powder may be prepared into an electrochromic film and then be applied for preparing a new electrochromic device such as a smart glass, that is, an energy-saving glass. According to experts, the tungsten trioxide smart glass is a multi-layered device that is then laminated onto glass. When an electrical charge is delivered to the glass, it tints, shading occupants against sun or heat. When the voltage is reversed, the glass will clear.

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Tungsten Oxide Powder Applied for New Electrochromic Device

tungsten oxide powder applied for new electrochromic device picture

Tungsten oxide powder can be first prepared into a film and then used to prepare a new electrochromic device. Wherein, the tungsten oxide film can be an amorphous tungsten oxide film and a crystalline tungsten oxide film. Some experts believed that the tungsten oxide film with a crystalline structure has a better discoloration effect as it is more advantageous to transport ions at the edge of the grain relaxation.

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WO3 Applied for All-solid-state Electrochromic Device

WO3 applied for all-solid-state electrochromic device picture

WO3 is an important raw material for production of all-solid-state electrochromic device, in which tungsten trioxide is first formed into a tungsten trioxide electrochromic film. The discoloration of WO3 film can be explained by inter-valency charge transfer model. The inter-valency charge transfer model, also known as Fanghnan model or dual injection/extraction model, was proposed by Fanghnan based on the basic theory of ITA. They believed that:

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Yellow Tungsten Oxide Applied for All-solid-state Electrochromic Device

yellow tungsten oxide applied for all-solid-state electrochromic device picture

Yellow tungsten oxide, also known as tungsten trioxide or WO3, can be made into an electrochromic film and used to produce an all-solid-state electrochromic device. Wherein, the discoloration mechanism of the WO3 film can be explained by the Schirmer model, that is, the small polaron model. That is because the scientists found that the small polaron model not only fits well with the WO3 light absorption curve, but also explains the phenomenon of spectral blue shift in the WO3 evaporation process.

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Tungsten Oxide Applied for All-solid-state Electrochromic Device

tungsten oxide applied for all-solid-state electrochromic device picture

Tungsten oxide can be used to prepare an all-solid-state electrochromic device. It indicates that the raw material tungsten oxide powder with good electrochromic properties has met the following two basic requirements:

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Tungsten Trioxide Powder Applied for Electrochromic Device

tungsten trioxide powder applied for electrochromic device image

Tungsten trioxide powder for electrochromic device is an electrochromic metal oxide. Experts say that almost all electrochromic oxides have a BO6 configuration. The figure below shows a unit cell of ABO3 perovskite lattice structure.

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Yellow Tungsten Oxide Applied for Inorganic Electrochromic Material

yellow tungsten oxide applied for inorganic electrochromic material picture

Yellow tungsten oxide, or tungsten trioxide, is an inorganic electrochromic material. Wherein, tungsten trioxide powder can be mainly made into an electrochromic film of amorphous structure or of crystalline structure, and then be used to assemble electrochromic devices such as smart windows. So, do you know what the difference is between amorphous WO3 electrochromic film (a-WO3 film) and crystalline WO3 electrochromic film (c-WO3 film)?

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Tungsten Oxide Applied for Electrochromic Device

tungsten oxide applied for electrochromic device picture

Tungsten oxide can be used to develop and prepare an electrochromic device such as a smart glass, an electrochromic display, an automotive automatic anti-glare rearview mirror, and the like. When it comes to electrochromism, you may think of Deb. In 1973, Deb first discovered that the tungsten oxide powder had electrochromic properties, and developed the electrochromic device of tungsten trioxide film for the first time.

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Yellow Tungsten Oxide Powder Applied for Inorganic Electrochromic Material

yellow tungsten oxide powder applied for inorganic electrochromic material picture

Yellow tungsten oxide powder, or tungsten trioxide powder, is an inorganic electrochromic material that can be made into an electrochromic film and assembled into a new type of energy-saving window - smart window for use in high-end cars and buildings. Such smart glass can not only play the role of heat insulation, but also save energy and reduce consumption.

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WO3 Powder Applied for Inorganic Electrochromic Material

WO3 powder applied for inorganic electrochromic material picture

WO3 powder is an important inorganic electrochromic material for producing a smart glass. Smart glass has a wide variety of applications, as you may have known.

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