Tungsten trioxide can be used on the intelligent glass curtain wall in the form of a layer of electrochromic film, so the smart will have the properties of heat insulation and heat preservation. We all know that in the hot days, people don't want the heat in the sun to enter the room, but like a cool environment.

Tungsten trioxide can be used as a photochromic film or an electrochromic film, for obtaining an intelligent building glass. We all know that in cold areas, glass window, glass door or glass curtain wall is the main reason of heat loss of building, so effective means must be used to solve this problem.

WO3 electrochromic film is an important EC layer material for preparing electrochromic glass, that is, an electrochromic device. In general, in the actual preparation of electrochromic devices, electrochromic materials are required to have the characteristics of stable chemical properties, rapid color change response, high cycle life, reversible color change, highly sensitive color change, memory function and good electrochemical redox reversibility. But why the light transmission rate of electrochromic glass decreases when it bleaches after repeated use?

Amorphous WO3 electrochromic film has broad application prospects in smart windows due to its excellent electrochromic properties. The amorphous phase tungsten trioxide film can be deposited on transparent conductive ITO glass by RF magnetron sputtering technology using WO3 ceramic target as raw material. Experts also studied the effect of sputtering power on the structure and optical properties of the prepared WO3 electrochromic thin film, and the electrochromic properties of film.

Yellow tungsten oxide, also known as tungsten trioxide, is the core material for the preparation of an electrochromic device. And WO3 is present in the electrochromic layer of smart window in the form of a layer of electrochromic film. So, why the bleaching process of WO3 film takes less time than the coloring process?

Nano WO3 can be used to produce an electrochromic film and then be used to assemble electrochromic devices, such as smart windows. Ultimately, these smart windows are applied in buildings for thermal insulation and energy conservation. Then, after completely bleaching, why is the light transmittance of the tungsten trioxide film slightly higher than the corresponding light transmittance when it is not colored?

Mo-doped WO3 nanowire can be used to prepare an electrochromic film, which may be applied to smart buildings for high thermal insulation. Some experts have prepared a high-quality Mo-doped WO3 ultra-fine nanowire with a diameter of about 3nm which is oriented by nano-crystals by a low-temperature atmospheric method. These nanowires are uniformly dispersed in water to form stable nano-ink.

Nest-like WO3•0.33H2O may be used to prepare an electrochromic film and then be used to produce a smart window - an energy-saving window that provides the function of thermal insulation, anti-glare and UV resistance. Specifically, some experts have prepared a nest-like hydrated tungsten trioxide electrochromic film on a FTO conductive substrate by a self-seeding hydrothermal method.

Tungsten trioxide may be used to prepare a construction film with excellent thermal insulation properties and light transmission properties. Also, such heat insulation film is environmentally friendly and non-polluting. According to experts, such energy-saving film is obtained by nano-technology to uniformly sputter a high temperature resistant and extremely stable tungsten oxide material onto a high tension PET substrate.

Nano WO3 can be used to prepare a smart window. The tungsten trioxide nanoparticles exist on the smart glass in the form of an electrochromic film (as an EC layer), which has the characteristics of stable performance and good optical adjustment. Finally, such glass can play the role of heat insulation and heat preservation on buildings or autos.