Cesium tungstate for producing car heat insulation film is known as a dingal material, an energy saving material, a near-infrared (NIR) shielding material, or a heat shielding material. It is the absorption of NIR that makes the cesium tungstate (Cs0.33WO3) nanoparticles apply to produce car heat insulation film.
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And it is also the ability of NIR absorption that enables Cs0.33WO3 nanopowder to increase the output of thermoelectric conversion. According to the experts, they assessed the ability of NIR absorption of Cs0.33WO3 utilizing NIR laser at wavelength of 808nm, a solar simulator and sunlight in outdoor environment. And they addressed the question of whether heat trapping is conducive to thermoelectric conversion. Also, they assessed four typical weather condition. The results indicate that Cs0.33WO3 nanopowder is capable of increasing the output of thermoelectric conversion under the environment of ambient temperature. When compared with a bare thermoelectric device, approximately 13.1% of rise in maximal attainable temperature and the corresponding 291% of increase in maximal output voltage have been demonstrated employing Cs0.33WO3 nanopowder of 0.66% in concentration.
