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Hydrogen-related ph...
Hydrogen-related photoluminescent centers in SiC
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- Prezzi, D. (författare)
- School of Physics, University of Exeter
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- Eberlein, T.A.G. (författare)
- School of Physics, University of Exeter
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- Jones, R. (författare)
- School of Physics, University of Exeter
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- Hourahine, B. (författare)
- Theoretische Physik, Universität Paderborn
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- Briddon, P.R. (författare)
- School of Natural Science, University of Newcastle upon Tyne
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- Öberg, Sven (författare)
- Luleå tekniska universitet,Matematiska vetenskaper
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(creator_code:org_t)
- 2004
- 2004
- Engelska.
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Ingår i: Physical Review B. Condensed Matter and Materials Physics. - 1098-0121 .- 1550-235X. ; 70:20, s. 205207-1
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Local density functional calculations are used to investigate models of the center responsible for a prominent set of luminescent lines with zero-phonon lines around 3.15 eV in hydrogen rich 4H-SiC and previously attributed to VSi-H . We find that the electronic structure of this defect and the character of its vibrational modes are inconsistent with this assignment. In contrast, a H2* center, bound to a carbon anti-site, is more stable than the isolated molecule and possesses a donor level close to that observed for the H-lines. Moreover, its vibrational modes are in good agreement with experiment. A possible mechanism for the radiation enhanced quenching of the defect is discussed.
Ämnesord
- NATURVETENSKAP -- Matematik -- Beräkningsmatematik (hsv//swe)
- NATURAL SCIENCES -- Mathematics -- Computational Mathematics (hsv//eng)
Nyckelord
- Scientific Computing
- Teknisk-vetenskapliga beräkningar
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- art (ämneskategori)
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