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The electronic state of thin films of yttrium, yttrium hydrides and yttrium oxide
Published in Elsevier
2014
Volume: 128
   
Pages: 270 - 274
Abstract
Thin films of yttrium hydride have for almost 20 years been under investigation for optoelectronic and solar energy applications due to the hydrogen-induced switching in electronic state from the metallic elemental yttrium and yttrium dihydride to the transparent semiconductor material yttrium trihydride. In this study, we investigate the electronic structure of yttrium, yttrium hydride and yttrium oxide by using X-ray photoelectron spectroscopy and kelvin probe measurements. The investigated samples have been prepared by reactive sputtering deposition. We show that the electronic work function of transparent yttrium hydride is of 4.76 eV and that the recently discovered photochromic reaction lowers the electronic work function of the transparent hydride by 0.2 eV. © 2014 Elsevier B.V.
About the journal
JournalData powered by TypesetSolar Energy Materials and Solar Cells
PublisherData powered by TypesetElsevier
ISSN09270248
Open AccessYes
Concepts (18)
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    Electronic states
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    Electronic structure
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    Hydrides
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    Photochromism
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    Solar energy
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    Thin films
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    Work function
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    X ray photoelectron spectroscopy
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    Yttrium
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    ELECTRONIC WORK FUNCTION
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    KELVIN PROBE MEASUREMENTS
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    PHOTOCHROMIC REACTIONS
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    SOLAR ENERGY APPLICATIONS
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    SPUTTERING DEPOSITION
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    TRANSPARENT SEMICONDUCTOR
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    YTTRIUM HYDRIDE
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    YTTRIUM TRIHYDRIDE
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    Yttrium alloys