Thermochromic characteristics of WO3-doped vanadium dioxide thin films prepared by sol-gel method
- 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
- Issue Date
- Jan-2012
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Films; Electrical properties; Thermal applications; Thermochromic
- Citation
- CERAMICS INTERNATIONAL, v.38, pp.S589 - S593
- Indexed
- SCIE
SCOPUS
- Journal Title
- CERAMICS INTERNATIONAL
- Volume
- 38
- Start Page
- S589
- End Page
- S593
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/166534
- DOI
- 10.1016/j.ceramint.2011.05.104
- ISSN
- 0272-8842
- Abstract
- Thin films of tungsten-doped vanadium oxide were fabricated on an alumina substrate by spin coating technology. A V2O5 solution was prepared by an inorganic sol gel method, which was a fairly cheap and effective process. As-coated V2O5 films turned to VO2 films during heat treatment in a reducing gas flow. Non-doped VO2 film exhibited the best switching property of 4.0 orders of magnitude of electrical resistance and a small hysteresis of approximately 5 degrees C width. Tungsten in VO2 led to a diffuse phase transition and weak jump of electrical resistivity. A reduction of the transition temperature by 15.5 degrees C/mol was observed for the tungsten doping in this study.
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