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Thermochromic Vanadium Oxide Thin Films: Electronic and Optical Properties
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
2014 (English)In: Journal of Physics, Conference Series, ISSN 1742-6588, E-ISSN 1742-6596, Vol. 559, no 012001, 012001/1-012001/8 p.Article in journal (Refereed) Published
Abstract [en]

ABSTRACT: Vanadium dioxide, VO2, is a widely studied thermochromic material with potential applications in energy efficient window technology. It undergoes a first-order metal-to- insulator transition, accompanied by a crystal structure transformation from monoclinic to tetragonal rutile, at a critical temperature of 68 °C. Below this temperature, VO2 is semiconducting and infrared transmitting whereas it is metallic and infrared reflecting above the transition temperature. However, in order to achieve significant thermochromic switching, the luminous transmittance of thin films will typically be less than 50%. Here we report on recent research to improve the luminous transmittance as well as the transmittance change at the transition temperature. We systematically evaluate the effect of antireflection coatings, doping with Mg and the performance of coatings comprising thermochromic nanoparticles in a transparent matrix. The last option is shown to give the best performance and holds great promise for practical applications.

Full-text · Article · Nov 2014 · Journal of Physics Conference Series

Place, publisher, year, edition, pages
2014. Vol. 559, no 012001, 012001/1-012001/8 p.
National Category
Engineering and Technology
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URN: urn:nbn:se:uu:diva-284468OAI: oai:DiVA.org:uu-284468DiVA: diva2:920401
Available from: 2016-04-18 Created: 2016-04-18 Last updated: 2017-11-30

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Niklasson, GunnarLi, S.- Y.Granqvist, C.-G.

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