Thermochromic characteristics of WO 3-doped vanadium dioxide thin films prepared by sol–gel method

Thin films of tungsten-doped vanadium oxide were fabricated on an alumina substrate by spin coating technology. A V 2O 5 solution was prepared by an inorganic sol–gel method, which was a fairly cheap and effective process. As-coated V 2O 5 films turned to VO 2 films during heat treatment in a reduci...

Full description

Saved in:
Bibliographic Details
Published inCeramics international Vol. 38; pp. S589 - S593
Main Authors Cho, Jeong-Ho, Byun, Young-Jun, Kim, Jin-Ho, Lee, Young-Jin, Jeong, Young-Hun, Chun, Myoung-Pyo, Paik, Jong-Hoo, Sung, Tae Hyun
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 2012
Subjects
A. Films
C. Electrical properties
E. Thermal applications
Thermochromic
Thermochromic
E. Thermal applications
A. Films
C. Electrical properties
Online AccessGet full text

Cover

More Information
Summary:Thin films of tungsten-doped vanadium oxide were fabricated on an alumina substrate by spin coating technology. A V 2O 5 solution was prepared by an inorganic sol–gel method, which was a fairly cheap and effective process. As-coated V 2O 5 films turned to VO 2 films during heat treatment in a reducing gas flow. Non-doped VO 2 film exhibited the best switching property of 4.0 orders of magnitude of electrical resistance and a small hysteresis of approximately 5 °C width. Tungsten in VO 2 led to a diffuse phase transition and weak jump of electrical resistivity. A reduction of the transition temperature by 15.5 °C/mol was observed for the tungsten doping in this study.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2011.05.104