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Examination of Photoluminescence Temperature Dependencies in N-B Co-doped 6H-SiC
Institute of Applied Research, Vilnius University, Lithuania .
Institute of Applied Research, Vilnius University, Lithuania .
Institute of Applied Research, Vilnius University, Lithuania .
Institute of Applied Research, Vilnius University, Lithuania .
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2014 (English)In: IOP Conference Series: Materials Science and Engineering, ISSN 1757-8981, E-ISSN 1757-899X, Vol. 56, no 1, 012003- p.Article in journal (Refereed) Published
Abstract [en]

Two overlapping photoluminescent (PL) bands with a peaks (half-width) at 1.95 eV (0.45 eV) and 2.15 eV (0.25 eV), correspondingly at 300 K, are observed in heavily B-N co-doped 6H-SiC epilayers under high-level excitation condition. The low energy band dominates at low temperatures and decreases towards 300 K which is assigned to DAP emission from the nitrogen trap to the deep boron (dB) with phonon-assistance. The 2.15 eV band slightly increases with temperature and becomes comparable with the former one at 300 K. We present a modelling comprising electron de-trapping from the N-trap, i.e. calculating trapping and de-trapping probabilities. The T-dependence of the 2.15 eV band can be explained by free electron emission from the conduction band into the dB center provided by similar phonon-assistance

Place, publisher, year, edition, pages
Institute of Physics Publishing (IOPP), 2014. Vol. 56, no 1, 012003- p.
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Natural Sciences
Identifiers
URN: urn:nbn:se:liu:diva-107543DOI: 10.1088/1757-899X/56/1/012003OAI: oai:DiVA.org:liu-107543DiVA: diva2:725094
Conference
EMRS 2013 Spring Meeting, Symposium G
Available from: 2014-06-14 Created: 2014-06-14 Last updated: 2017-12-05Bibliographically approved

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Jokubavicius, ValdasSun, JianwuSyväjärvi, Mikael

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
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  • vancouver
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  • Other style
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  • de-DE
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  • nn-NB
  • sv-SE
  • Other locale
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