首页|Thermochromic performance improvement based on W-VO2@AA core-shell structure nanoparticles
Thermochromic performance improvement based on W-VO2@AA core-shell structure nanoparticles
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NETL
NSTL
Elsevier
Vanadium dioxide (VO2) is a promising candidate for thermochromic smart windows for its thermally induced metal-to-insulator phase transition properties. Tungsten doping can reduce the phase transition temperature of VO2 (W-VO2) to near room temperature but deteriorates the thermochromic performance. A W-VO2@AA coreshell structure was proposed to improve the thermochromic performance by enhancing the luminous transmittance and solar modulation, simultaneously. The W-VO2@AA core-shell structure was prepared by the hydrothermal method based on the surface molecular coordination effect, and the shell thickness of AA was modulated by glacial acetic acid. The phase transition temperature of W-VO2@AA is 34.53 degrees C. The solar modulation of the W-VO2@AA/PVP composite film-based smart windows is increased by 80.2 % (from 5.65 % to 10.18 %) compared with W-VO2/PVP, and the luminous transmittance is maintained satisfactorily at 70.52 %. This enhancement is primarily attributed to the injection of electrons from AA into the W-VO2 lattice, which enhances the localized surface plasmon resonance absorption performance. Moreover, the refractive index of AA is between PVP and W-VO2, which decreases the reflectance. This work provides a new strategy to overcome the trade-off relationship between the two thermochromic properties of W-VO2.
Tianjin University School of Microelectronics||Tianjin Univ
Tianjin University School of Microelectronics
Tianjin SYP Engn Glass CO LTD
City University of Hong Kong Department of Materials Science and Engineering||City University of Hong Kong National Precious Metals Material Engineering Research Center
NETL
NSTL
Elsevier
