Nano tungsten trioxide is not only an important n-type semiconductor material, but a kind of transparent thermal insulation nanopowder. And it is also one of the few oxide semiconductors that are easy to realize the quantum size effect.
Tungsten trioxide can also absorb electromagnetic waves, and has photocatalysis property and other properties so that it is widely used in fuel cells, chemical sensors, optoelectronic devices and other fields.
The application of tungsten trioxide in the field of transparent heat insulation is mainly due to its ability to absorb electromagnetic waves. Electromagnetic radiation, from low frequency to high frequency, is mainly containing radio wave, microwave, infrared ray, visible light, ultraviolet ray, X-ray and gamma ray. Tungsten trioxide mainly shields ultraviolet ray and near-infrared ray, and has strong transmittance of visible light. And therefore, the heat insulation material made from tungsten trioxide will be widely applied in the field of heat insulation, which plays a role of energy-saving.
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