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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It can be said that the electrochromic technology has brought a myriad benefits to society as a whole, and with innovations like smart glass, architects and designers can design better, more efficient buildings to serve humans for decades to come. For electrochromic material, experts have introduced that as early as the 1930s, there were preliminary reports on electrochromism. Since the introduction of the concept of electrochromism by foreign scholar Plant in the 1960s, electrochromism has attracted widespread attention. In 1969, Deb first made electrochromic devices using amorphous WO3 films, and proposed the "oxygen vacancy mechanism", which is considered to be the discoverer of this phenomenon. In the 1970s, many transition metal oxides such as MoO3, TiO2, and NiO were also found to have electrochromic properties. And people come to realize the unique advantages and potential application prospects of electrochromism. And there were a large number of reports on electrochromic mechanisms and inorganic electrochromic materials.
