Synthesis of colloidal VO2 nanoparticles for thermochromic applications

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Vanadium dioxide (VO2) thin films are key materials for thermochromic smart windows and commonly have a typical phase transition (insulator to metal phase) at a transition temperature of 68 degrees C. This research, however, found that highly crystallized VO2 nanoparticles can be successfully coated on a glass substrate with added functionalities, such as higher luminous transmittance and transition efficiency. The transition temperature revealed that the VO2 nanoparticles with post thermal treatment at 600 degrees C also clearly exhibited a reduced transition temperature of 69 degrees C in the heating curve, 59 degrees C in the cooling curve, and a transition width of 10 degrees C. By nanopatterning the thin films, we were able to prepare VO2 thin films with higher luminous transmittance than that attained with non-patterned VO2 thin films. The enhanced transition property was demonstrated using highly crystallized VO2 nanoparticles induced by post thermal treatment, and the luminous transmittance was improved by the nanopattems on the surface of the VO2 thin films.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2018-03
Language
English
Article Type
Article
Keywords

METAL-INSULATOR-TRANSITION; DIOXIDE THIN-FILMS; SOL-GEL METHOD; SMART WINDOWS; HYDROTHERMAL SYNTHESIS; OPTICAL-PROPERTIES; TEMPERATURE; TRANSMITTANCE; STABILITY; SURFACTANTS

Citation

SOLAR ENERGY MATERIALS AND SOLAR CELLS, v.176, pp.266 - 272

ISSN
0927-0248
DOI
10.1016/j.solmat.2017.12.008
URI
http://hdl.handle.net/10203/240194
Appears in Collection
MS-Journal Papers(저널논문)
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