Cs0.32WO3: Transparent Thermal Insulation Material

Cs0.32WO3, or cesium tungsten bronze, is a non-stoichiometric narrow band gap semiconductor material that can be prepared into a transparent thermal insulation material such as thermal insulation film, thermal insulation coating, and thermal insulation glass. Well, do you know the principle of the thermal insulation of semiconductor?

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According to the experts, the heat shielding effect of heat insulation film is a common result of absorption and reflection. When the light source hits the surface of the film, part of the heat radiation will be absorbed by the carrier, while the other part will be reflected by the plasma because the frequency of the incident light is lower than the natural frequency of the surface plasma resonance. That is to say, due to the presence of free carriers and plasmons, semiconductors have an effect of absorbing and reflecting incident light. According to the difference in the properties of semiconductor materials, there will be differences in the proportion of absorption and reflection.

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