Functional Properties of APCVD VO2 Layers

Authors

Dimitra Vernardou, Center of Materials Technology and Photonics, School of Applied Technology, Technological Educational Institute of Crete, 710 04 Heraklion, Crete, Greece.Follow
Dimitrios Louloudakis, Center of Materials Technology and Photonics, School of Applied Technology, Technological Educational Institute of Crete, 710 04 Heraklion, Crete, Greece\\ Department of Physics, University of Crete, 710 03 Heraklion, Crete, GreeceFollow
Emmanuel Spanakis, Department of Materials Science and Technology, University of Crete, 710 03 Heraklion, Crete, GreeceFollow
Nikolaos Katsarakis, Center of Materials Technology and Photonics, School of Applied Technology, Technological Educational Institute of Crete, 710 04 Heraklion, Crete, Greece. \\ Electrical Engineering Department, School of Applied Technology, Technological Educational Institute of Crete, 710 04 Heraklion, Crete, Greece. \\ Institute of Electronic Structure and Laser, Foundation for Research & Technology- Hellas, P.O. Box 1527, Vassilika Vouton, 711 10 Heraklion, Crete, GreeceFollow
Emmanuel Koudoumas, Center of Materials Technology and Photonics, School of Applied Technology, Technological Educational Institute of Crete, 710 04 Heraklion, Crete, Greece. \\ Institute of Electronic Structure and Laser, Foundation for Research & Technology- Hellas, P.O. Box 1527, Vassilika Vouton, 711 10 Heraklion, Crete, GreeceFollow

Abstract

The growth of isolated monoclinic and metastable vanadium dioxide phases was possible by the atmospheric pressure chemical vapor deposition at 500 oC through the control of oxygen flow rate. The as-grown coating for 0.2 L min-1 showed a reversible switching behavior at 62 oC with a difference in transmittance of the order of 40 %. On the other hand, the coating deposited for 0.8 L min-1 had good electrochemical response presenting capacitance retention of 96 % after 500 scans. The results are discussed in terms of the materials’ observed structure and morphology. We showed that the transition characteristics of the coatings are based on the competing effects of crystallinity and crystallite size, while their electrochemical response is related to the increased surface area ratio of the nanorods.

Recommended Citation

Vernardou, Dimitra; Louloudakis, Dimitrios; Spanakis, Emmanuel; Katsarakis, Nikolaos; and Koudoumas, Emmanuel (2015) "Functional Properties of APCVD VO2 Layers," International Journal of Thin Film Science and Technology: Vol. 4 : Iss. 3 , PP -.
Available at: https://digitalcommons.aaru.edu.jo/ijtfst/vol4/iss3/5