Effects of implantation defects on the carrier concentration of 6H-SiC (Articolo in rivista)

Type
Label
  • Effects of implantation defects on the carrier concentration of 6H-SiC (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Ruggiero A, Libertino S, Roccaforte F, La Via F, Calcagno L (2006)
    Effects of implantation defects on the carrier concentration of 6H-SiC
    in Applied physics. A, Materials science & processing (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Ruggiero A, Libertino S, Roccaforte F, La Via F, Calcagno L (literal)
Pagina inizio
  • 543 (literal)
Pagina fine
  • 547 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 82 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Catania, Dipartimento Fis & Astron, I-95123 Catania, Italy; CNR, IMM, Sezione Catania, I-95121 Catania, Italy (literal)
Titolo
  • Effects of implantation defects on the carrier concentration of 6H-SiC (literal)
Abstract
  • The effects of ion irradiation defects on the carrier concentration of 6H-SiC epitaxial layer were studied by current-voltage (I-V), capacitance.-voltage (C-V) measurements, thermally stimulated capacitance and deep level transient spectroscopy. The defects were produced by irradiation with 10 MeV C+ at a fluence of 10(11) ions/cm(2) supercript stop and subsequent thermal annealings were carried out in the temperature range 500-1700 K under N-2 flux. I-V and C-V measurements reveal the presence of a high defect concentration after irradiation and annealing at temperature lower than 1000 K. Thermally stimulated capacitance measurements show that some of the defects induce a deactivation of the nitrogen donor, while some of the generated defects, behaving as donor-like traps, contribute to increase the material free carrier concentration at temperatures above their freezing point. Deep level transient spectroscopy measurements performed in the temperature range 150-450 K show the presence of several overlapping traps after ion irradiation and annealing at 1000 K: these traps suffer a recovery and a transformation at higher temperatures. The annealing of all traps at temperatures as high as 1700 K allows one to completely restore the n-type conductivity. The defects mainly responsible of the observed change in the carrier concentration are identified. (literal)
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