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Preferential Orient...
Preferential Orientation of Photochromic Gadolinium Oxyhydride Films
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- Baba, Elbruz Murat (författare)
- Inst Energy Technol, Dept Solar Energy, NO-2027 Kjeller, Norway.;Istanbul Tech Univ, Nanosci & Nano Engn Dept, TR-34469 Istanbul, Turkey.
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- Montero, José Amenedo, 1983- (författare)
- Uppsala universitet,Fasta tillståndets fysik
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- Moldarev, Dmitrii (författare)
- Uppsala universitet,Materialfysik,Inst En MEPhI, Dept Mat Sci, Kashirskoe Shosse 31, Moscow 115409, Russia.
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- Moro, Marcos V. (författare)
- Uppsala universitet,Tillämpad kärnfysik
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- Wolff, Max (författare)
- Uppsala universitet,Materialfysik,Natl Res Nucl Univ MEPhI, Dept Mat Sci, Kashirskoe Shosse 31, Moscow 115409, Russia.
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- Primetzhofer, Daniel (författare)
- Uppsala universitet,Tillämpad kärnfysik
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- Sartori, Sabrina (författare)
- Univ Oslo, Dept Technol Syst, NO-2027 Kjeller, Norway.
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- Zayim, Esra (författare)
- Istanbul Tech Univ, Nanosci & Nano Engn Dept, TR-34469 Istanbul, Turkey.;Istanbul Tech Univ, Fac Sci & Letters, Phys Engn Dept, TR-34469 Istanbul, Turkey.
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- Karazhanov, Smagul (författare)
- Inst Energy Technol, Dept Solar Energy, NO-2027 Kjeller, Norway.;Natl Res Nucl Univ MEPhI, Dept Mat Sci, Kashirskoe Shosse 31, Moscow 115409, Russia.
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Inst Energy Technol, Dept Solar Energy, NO-2027 Kjeller, Norway;Istanbul Tech Univ, Nanosci & Nano Engn Dept, TR-34469 Istanbul, Turkey. Fasta tillståndets fysik (creator_code:org_t)
- 2020-07-12
- 2020
- Engelska.
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Ingår i: Molecules. - : MDPI. - 1431-5157 .- 1420-3049. ; 25:14
- Relaterad länk:
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https://doi.org/10.3...
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https://uu.diva-port... (primary) (Raw object)
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https://res.mdpi.com...
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Ämnesord
Stäng
- We report preferential orientation control in photochromic gadolinium oxyhydride (GdHO) thin films deposited by a two-step process. Gadolinium hydride (GdH2-x) films were grown by reactive magnetron sputtering, followed by oxidation in air. The preferential orientation, grain size, anion concentrations and photochromic response of the films were strongly dependent on the deposition pressure. The GdHO films showed a preferential orientation along the [100] direction and exhibited photochromism when synthesized at deposition pressures of up to 5.8 Pa. The photochromic contrast was larger than 20% when the films were deposited below 2.8 Pa with a 0.22 H-2/Ar flow ratio. We argue that the relation of preferential orientation and the post deposition oxidation since oxygen concentration is known to be a key parameter for photochromism in rare-earth oxyhydride thin films. The experimental observations described above were explained by the decrease of the grain size as a result of the increase of the deposition pressure of the sputtering gas, followed by a higher oxygen incorporation.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- gadolinium oxyhydride
- rare earth metal oxyhydride
- mixed anion materials
- photochromic effect
- preferential orientation
- band gap
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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