Tungsten Trioxide Applied for Functional Film

Tungsten trioxide can be used to prepare functional film such as electrochromic films and the like. Recently, as electrochromic technology research has become hotter, the electrochromic film of tungsten trioxide nano particles has also become the focus of research. In addition, thin films of WO3 nano powder have received extensive attention in many applications such as sensors, photolysis of water, and solar cells.

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In this regard, experts say that the construction of WO3 functional films with high specific surface area and specific morphology is very important for the preparation of high-performance photoelectric devices. As you may have known, the electrochromic process occurs when ions and electrons are simultaneously embedded in the film. In order to achieve fast and efficient electrochromic reaction, the film material WO3 is required to have better ion/electron conductivity and more electrochemical reaction sites. And therefore the preparation of WO3 film of high specific surface area and porous structure is a hot research topic.

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