Violet Tungsten Oxide Applied for All-solid-state Electrochromic Smart Window

Violet tungsten oxide may be used to prepare an all-solid-state electrochromic smart window, which is also known as an energy-saving window. Now, such window is widely used in the heat insulation fields of buildings, automobiles, airplanes and spacecraft.

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That is because the smart window can dynamically adjust the input or output of the solar energy and the spectrum of the visible light region at random, and realize the continuous and reversible adjustment of the optical density. In other words, it can realize the purpose of heat insulation and heat preservation with lower energy consumption. In addition, the materials used are environmentally friendly and non-polluting, so the glass window is also a green building material. In fact, the core material of the smart window mainly uses a film, such as a photochromic film, a thermochromic film and an electrochromic film, among which the performance of the electrochromic film is particularly preferable. Tungsten trioxide was first discovered to have electrochromic properties. And WO3 is the most widely studied and intensive electrochromic material.

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