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Durability of thermochromic VO2 thin films under heating and humidity: Effect of Al oxide top coatings
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.ORCID iD: 0000-0002-8279-5163
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
2014 (English)In: Thin Solid Films, ISSN 0040-6090, E-ISSN 1879-2731, Vol. 562, 568-573 p.Article in journal (Refereed) Published
Abstract [en]

An explorative study was performed on sputter-deposited thermochromic (TC) VO2 films exposed to heat treatment under dry and humid conditions. The ambient conditions were harsh and 80-nm-thick VO2 films were rapidly converted to non-TC V2O5. It was found that a 30-nm-thick sputter-deposited Al oxide top coating provided good protection and delayed the oxidation for more than one day upon heating in dry air at 300 degrees C and that protection occurred for several days at 95% relative humidity and 60 degrees C. The thickness of the Al oxide was important and, expectedly, increased thickness yielded enhanced protection. Our results are important for TC fenestration as well as for other technical applications.

Place, publisher, year, edition, pages
2014. Vol. 562, 568-573 p.
Keyword [en]
Thermochromism, Vanadium dioxide, Durability, Relative humidity, Aluminum oxide
National Category
Physical Sciences Engineering and Technology
Research subject
Engineering Science with specialization in Solid State Physics
Identifiers
URN: urn:nbn:se:uu:diva-232663DOI: 10.1016/j.tsf.2014.03.043ISI: 000340658100091OAI: oai:DiVA.org:uu-232663DiVA: diva2:749026
Projects
EU GRINDOOR
Funder
EU, FP7, Seventh Framework Programme, 267234
Available from: 2014-09-22 Created: 2014-09-22 Last updated: 2017-12-05Bibliographically approved

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Ji, Yu-XiaLi, Shu-YiNiklasson, Gunnar A.Granqvist, Claes-Göran

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