Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1621082 | Journal of Alloys and Compounds | 2009 | 4 Pages |
Abstract
Thermochromic vanadium dioxide exhibits a semiconducting to metallic phase transition at Tt = 341 K, 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 298.6 K, 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.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Zifei Peng, Yuan Wang, Yanyun Du, Dan Lu, Dazhi Sun,