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Spectrally selective nanocoatings with synergistically enhanced photocatalytic and solar light modulation properties
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.ORCID iD: 0000-0003-0296-5247
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.ORCID iD: 12751850400
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
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2019 (English)Conference paper, Poster (with or without abstract) (Other academic)
Abstract [en]

Spectrally selective nanocoatings that exhibit synergistically enhanced solar light modulation, luminous transmittance and catalytic properties can be made by combining dielectric film stacks with complementary optical and structural properties. Here we show two case studies:

1)TiO2/VO2 luminous transparent bilayers that exhibits enhanced near-infrared light absorption and heats the TiO2 film by up to ~ 30°C  resulting in ~ 2-fold increase of the photocatalytic reaction rate. The TiO2/VO2 bilayer stack exhibits anti-reflective properties, and enhanced solar light modulation (∼ 9%) compared to VO2, and ∼ 20 times% increased solar absorptance compared to TiO2. In addition the TiO2 chemically protects the VO2 layer avoiding oxidation to vanadium pentoxide. 2)TiO2/TiAlN solar absorber bilayers that yield an almost ~ 10-fold enhancement of the quantum yield for acetaldehyde removal (on par with state-of-the-art, heterojunction photocatalysts), and an associated temperature rise ~120 °C.

Place, publisher, year, edition, pages
2019.
National Category
Engineering and Technology Physical Sciences
Research subject
Engineering Science with specialization in Solid State Physics
Identifiers
URN: urn:nbn:se:uu:diva-395216OAI: oai:DiVA.org:uu-395216DiVA, id: diva2:1361195
Conference
E-MRS Spring Meeting 2019. IUMRS-ICAM International Conference on Advanced Materials, May 27-31, 2019, Nice, France.
Available from: 2019-10-15 Created: 2019-10-15 Last updated: 2019-10-21Bibliographically approved

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