Cesium tungsten oxide for producing transparent thermal insulation material is Cs0.33WO3 nanocrystals. That is because Cs0.33WO3 nano particles can shield near infrared rays (heat radiation) and decrease CO2 emission. And the prepared transparent thermal insulation material may be heat insulation film or thermal insulation coating for applying to glasses of buildings and autos.
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According to the experts, the well-dispersed Cs0.33WO3 nanocrystals with homogeneous morphology could be fabricated by the solvothermal reaction using ethanol-acetic acid mixed solution as a reaction solvent. The product showed excellent visible light transparency as well as near infrared ray shielding performance. The simulated experimental results confirmed the heat-shielding performance of Cs0.33WO3 film superior to commercial ITO glasses, indicating the high-potential as a solar filter. Also, it is reported that the penetration ratio of near-infrared rays of Cs0.33WO3 nanoparticles is higher than 13.5%. And the visible light transmittance of Cs0.33WO3 nanoparticles is higher than 71%.
