Cr掺杂对铯钨青铜光学性能的影响

A series of Cr-doped cesium tungsten bronzes are synthesized via water controlled-release solvothermal method using WCl₆, CsOH•H₂O and CrCl₃•6H₂O as raw materials, ethanol and acetic acid as solvents. The crystal phase, binding energy, morphology and elemental composition of the material are characterized by X-ray diffractometry (XRD), X-ray photoelectron spectroscopy (XPS), energy spectrum analyzer (EDS) and UV-visible diffuse reflectance spectroscopy (UV-Vis).The effect of Cr doping on the optical properties of cesium tungsten bronze is also investigated. The results illustrate that the synthesized samples have hexagonal Cs_0.32WO₃ structure and the transmittance of the film made from the samples increases with the increase of Cr doping amount. When the molar ratio of Cr/W=0.01, the film still exhibits good infrared shielding performance and the average transmittance in the visible light region increases by 10%.Furthermore, the heat insulation efficiency of the sample improves by 73.4%.In addition, through the thermal insulation performance test, the temperature variation of the film is 6.4℃ compared with a blank glass.