Violet tungsten oxide may be used to prepare an electrochromic film. The prepared electrochromic thin film and other components are sandwiched between common glasses to form an electrochromic window, that is, a smart window. Such smart window can dynamically control the transmittance of radiant energy in accordance with the changes of seasons and climate, thereby reducing the energy consumption indoors or in the car. And therefore, it is more and more widely applied to buildings and automobiles.
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Regarding electrochromic films, experts have introduced that since Deb discovered the electrochromic effect of amorphous WO3 films in 1969, domestic and foreign scholars have conducted extensive research on electrochromic thin films and their applications. And electrochromic windows have been industrialized in the United States, the United Kingdom, Germany, Switzerland, Japan and other countries in recent years. Generally, these new energy-saving glasses have been applied in high-end buildings and automobiles. Certainly, China is also working on smart glass of tungsten oxide and putting it into mass production.
