Journal
RSC ADVANCES
Volume 5, Issue 71, Pages 57757-57763Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra09518b
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Funding
- high-tech project of MOST [2014AA032802]
- National Natural Science Foundation of China (NSFC) [51272273, 51272271]
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Low infrared transmittance WO3-x (0 < x < 1) ratios, as transparent conductors with high transmittance in the visible range and UV blocking. The infrared shielding properties could be adjusted by tuning the oxygen ratio during the sputtering process. The intrinsic defects, such as oxygen vacancy (V-O(center dot center dot)) and special atom (W5+), determine the main optical properties by localized states originated from the electron caused by interband transition and the surface dipole of the plasmon oscillation of the nanoparticle with optical scattering. The structures, morphology, defects and chemical states were investigated. With respect to oxygen ratio, it has little effect on the structure and morphology, yet the optical shielding performance, defects and chemical states can be controlled linearly by considering the oxygen ratio during the sputtering process. The WO3-x thin films have great potential for application in infrared shielding and energy conservation.
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