WO3 for preparing tungsten trioxide film has superior electrochromic properties than many other transition metal oxides such as NiO2 and MoO3, and therefore, tungsten trioxide and its electrochromic film have been given the greatest attention. What should be noted is that the performance of tungsten oxide is strongly dependent on the methods and conditions of the experimental preparation.
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According to experts, tungsten trioxide is also a wide band gap semiconductor with an optical band gap of around 3.00 eV. So what is a wide band gap semiconductor? Typically, wide bandgap semiconductors refer to a class of semiconductor materials with a band gap greater than 2.0 eV at room temperature. Wide bandgap semiconductors are widely used in high frequency, high temperature, high power electronic devices and field emission devices. Also, you can find it in UV optoelectronic devices. More importantly, we should pay much attention to the electrochromic properties of WO3 as it can be prepared into energy-saving film and be assembled into a smart window with high heat insulation and heat preservation performance.
