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Yttrium oxyhydrides for photochromic applications: Correlating composition and optical response
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Physics. Natl Res Nucl Univ MEPhI, Dept Mat Sci, Kashirskoe Shosse 31, Moscow 115409, Russia.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
Inst Energy Technol, Dept Solar Energy, NO-2027 Kjeller, Norway.
Inst Energy Technol, Dept Solar Energy, NO-2027 Kjeller, Norway;Istanbul Tech Univ, Nano Sci & Nano Engn Dept, TR-34469 Istanbul, Turkey.
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2018 (English)In: PHYSICAL REVIEW MATERIALS, ISSN 2475-9953, Vol. 2, no 11, article id 115203Article in journal (Refereed) Published
Abstract [en]

It has been recently demonstrated that yttrium oxyhydride (YHO) films can exhibit reversible photochromic properties when exposed to illumination at ambient conditions. This switchable optical property enables their utilization in many technological applications, such as smart windows, sensors, goggles, and medical devices. However, how the composition of the films affects their optical properties is not fully clear and therefore demands an investigation. In this paper, the composition of YHO films manufactured by reactive magnetron sputtering under different conditions is deduced in a ternary diagram from time-of-flight elastic recoil detection analysis. The results suggest that stable compounds are formed with a specific chemical formula-YH2-delta O delta. In addition, optical and electrical properties of the films are investigated, and a correlation with their compositions is established. The corresponding photochromic response is found in a specific oxygen concentration range (0.45 < delta < 1.5) with maximum and minimum of magnitude on the lower and higher border, respectively.

Place, publisher, year, edition, pages
2018. Vol. 2, no 11, article id 115203
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:uu:diva-372451DOI: 10.1103/PhysRevMaterials.2.115203ISI: 000451341300010OAI: oai:DiVA.org:uu-372451DiVA, id: diva2:1276353
Funder
Swedish Research Council, 821-2012-5144Swedish Research Council, 2017-00646_9Swedish Foundation for Strategic Research , RIF14-0053Carl Tryggers foundation Available from: 2019-01-08 Created: 2019-01-08 Last updated: 2019-01-08Bibliographically approved

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Moldarev, DmitriiMoro, Marcos V.Wolff, MaxPrimetzhofer, Daniel

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