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Phase transition and IR properties of tungsten-doped vanadium dioxide nanopowders
- Source :
-
Journal of Alloys & Compounds . Jul2009, Vol. 480 Issue 2, p537-540. 4p. - Publication Year :
- 2009
-
Abstract
- Abstract: Thermochromic vanadium dioxide exhibits a semiconducting to metallic phase transition at T t =341K, involving strong variations in electrical, magnetic, optical transmittance. Tungsten-doped vanadium dioxide nanopowders were synthesized by thermolysis with slight improvement and active white powdery tungstic acid (WPTA) used as a substitutional dopant. The results show that the phase transition temperature of the doped VO2 powders were decreased to 298.6K, which is very close to the room temperature. Tungsten-doped has enhanced the IR properties of VO2 nanopowders because the contrast of its IR transmission below and above the room temperature is up to 92% in our experiment. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 09258388
- Volume :
- 480
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Journal of Alloys & Compounds
- Publication Type :
- Academic Journal
- Accession number :
- 41584259
- Full Text :
- https://doi.org/10.1016/j.jallcom.2009.01.092