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Durability of VO 2 -based thin films at elevated temperature: Towards thermochromic fenestration
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: INERA Workshop: Transition Metal Oxides as Functional Layers in Smart windows and Water Splitting Devices / Parallel session of the 18th International School on Condensed Matter Physics, 2014, UNSP 012005- p.Conference paper, Published paper (Refereed)
Abstract [en]

An explorative study was performed on sputter-deposited thermochromic VO 2 films with top coatings of Al oxide and Al nitride. The films were exposed to dry air at a high temperature. Bare 80-nm-thick VO 2 films rapidly converted to non-thermochromic V 2 O 5 under the chosen conditions. Al oxide top coatings protected the underlying VO 2 films and, expectedly, increased film thickness yielded improved protection. Specifically, it was found that a 30-nm-thick sputter-deposited Al oxide top coating delayed the oxidation by more than one day upon heating at 300°C. The results demonstrate the importance of protective layers in thermochromic windows for practical application.

Place, publisher, year, edition, pages
2014. UNSP 012005- p.
Series
Journal of Physics Conference Series, ISSN 1742-6588 ; 559
National Category
Condensed Matter Physics Engineering and Technology
Identifiers
URN: urn:nbn:se:uu:diva-237113DOI: 10.1088/1742-6596/559/1/012005ISI: 000346420600005OAI: oai:DiVA.org:uu-237113DiVA: diva2:766395
Conference
INERA Workshop on Transition Metal Oxides as Functional Layers in Smart windows and Water Splitting Devices / Parallel session of the 18th International School on Condensed Matter Physics, sep 04-06, 2014, Varna, Bulgaria
Funder
EU, European Research Council, 267234
Available from: 2014-11-26 Created: 2014-11-26 Last updated: 2015-11-11Bibliographically approved

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Publisher's full texthttp://stacks.iop.org/1742-6596/559/i=1/a=012005

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Ji, Yu-XiaNiklasson, Gunnar AGranqvist, Claes-Göran

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