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Materials 2017, 10(3), 314; doi:10.3390/ma10030314

VO2 Thermochromic Films on Quartz Glass Substrate Grown by RF-Plasma-Assisted Oxide Molecular Beam Epitaxy

1
New Energy Source Research Center, Shenyang Institute of Engineering, Shenyang 110136, China
2
Key Laboratory of Materials Modification by Laser, Ion and Electron Beams(Ministry of Education), School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China
3
Key Laboratory of Inorganic Coating Materials, Chinese Academy of Sciences, Shanghai 200050, China
*
Author to whom correspondence should be addressed.
Academic Editor: Horng-Tay Jeng
Received: 21 January 2017 / Revised: 14 March 2017 / Accepted: 15 March 2017 / Published: 19 March 2017
(This article belongs to the Special Issue Metal-Insulator Transition)
View Full-Text   |   Download PDF [3165 KB, uploaded 19 March 2017]   |  

Abstract

Vanadium dioxide (VO2) thermochromic thin films with various thicknesses were grown on quartz glass substrates by radio frequency (RF)-plasma assisted oxide molecular beam epitaxy (O-MBE). The crystal structure, morphology and chemical stoichiometry were investigated systemically by X-ray diffraction (XRD), atomic force microscopy (AFM), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) analyses. An excellent reversible metal-to-insulator transition (MIT) characteristics accompanied by an abrupt change in both electrical resistivity and optical infrared (IR) transmittance was observed from the optimized sample. Remarkably, the transition temperature (TMIT) deduced from the resistivity-temperature curve was reasonably consistent with that obtained from the temperature-dependent IR transmittance. Based on Raman measurement and XPS analyses, the observations were interpreted in terms of residual stresses and chemical stoichiometry. This achievement will be of great benefit for practical application of VO2-based smart windows. View Full-Text
Keywords: metal-insulator transition; transition-metal oxides; vanadium dioxide (VO2); oxide molecular beam epitaxy metal-insulator transition; transition-metal oxides; vanadium dioxide (VO2); oxide molecular beam epitaxy
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Zhang, D.; Sun, H.-J.; Wang, M.-H.; Miao, L.-H.; Liu, H.-Z.; Zhang, Y.-Z.; Bian, J.-M. VO2 Thermochromic Films on Quartz Glass Substrate Grown by RF-Plasma-Assisted Oxide Molecular Beam Epitaxy. Materials 2017, 10, 314.

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