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Ultra thin transition metal oxide coatings on diamond for thermionic applications
School of Electrical and Electronic Engineering, Newcastle University, Newcastle upon Tyne.
School of Electrical, Electronic and Computer Engineering, University of Newcastle upon Tyne.
Electrical, Electronic and Computer Engineering, University of Newcastle upon Tyne.
School of Electrical and Electronic Engineering, Newcastle University, Newcastle upon Tyne.
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2013 (English)In: Proceedings of the MRS Fall Meeting Symposim, MRS Fall Meeting, 24-29 November 2012, Boston, USA, Warrendale: Materials Research Society, 2013, p. 13-18Conference paper, Published paper (Refereed)
Abstract [en]

We have investigated, using density functional simulations, the energetics and the electronic properties of oxides of selected transition metals, TMs, adsorbed onto a diamond (001) surface. We find that stoichiometric oxides of TMs, particularly Ti and Zn, influence the electron affinity of diamond strongly. The electron affinities of stoichiometric oxides of Ti and Zn are calculated to be around -3eV, significantly higher than 1.9eV of commonly used H-termination. The reactions of TMs with an oxygenated diamond are found to be highly exothermic. Based upon the energetics and the electronic properties, we propose that in the regime of ultra thin films, oxides of TMs are promising options for surface coating of diamond-based electron emitters, as these coatings are compatible with semiconductor device fabrication processes, while having the benefit of inducing a large negative electron affinity

Place, publisher, year, edition, pages
Warrendale: Materials Research Society, 2013. p. 13-18
Series
Materials Research Society Symposium Proceedings, ISSN 0272-9172 ; 1511
National Category
Computational Mathematics
Research subject
Scientific Computing
Identifiers
URN: urn:nbn:se:ltu:diva-30213DOI: 10.1557/opl.2012.1662Scopus ID: 2-s2.0-84899721451Local ID: 3f6496a4-f22c-4488-99c9-99cfdbc3b569OAI: oai:DiVA.org:ltu-30213DiVA, id: diva2:1003440
Conference
MRS Fall Meeting and Exhibit : 25/11/2012 - 30/11/2012
Note
Godkänd; 2013; 20140520 (andbra)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-07-10Bibliographically approved

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Rayson, Mark

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  • apa
  • harvard1
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