SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "WFRF:(Prezzi D.) "

Sökning: WFRF:(Prezzi D.)

  • Resultat 1-2 av 2
Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
1.
  • Prezzi, D., et al. (författare)
  • Hydrogen-related photoluminescent centers in SiC
  • 2004
  • Ingår i: Physical Review B. Condensed Matter and Materials Physics. - 1098-0121 .- 1550-235X. ; 70:20, s. 205207-1
  • Tidskriftsartikel (refereegranskat)abstract
    • 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.
  •  
2.
  • Prezzi, D., et al. (författare)
  • Optical and electrical properties of vanadium and erbium in 4H-SiC
  • 2004
  • Ingår i: Physical Review B. Condensed Matter and Materials Physics. - 1098-0121 .- 1550-235X. ; 69:19, s. 193202-1
  • Tidskriftsartikel (refereegranskat)abstract
    • Local-density-functional calculations are carried out on vanadium and erbium centers in 4H-SiC. Particular attention is paid to their electrical and optical properties. We find that both V and Er lie at Si sites and can exist in three charge states with deep donor and acceptor levels. While isolated VSi possesses intra-d and ionization induced optical transitions around 0.94 and 2.9 eV respectively, the intense and temperature stable intra-f optical transitions due to Er are unlikely to be due to an isolated Er defect. It is suggested that both impurities can trap H and N forming complexes which may limit the electrical efficiency of V and act as Er related exciton traps.
  •  
Skapa referenser, mejla, bekava och länka
  • Resultat 1-2 av 2
Typ av publikation
tidskriftsartikel (2)
Typ av innehåll
refereegranskat (2)
Författare/redaktör
Jones, R. (2)
Briddon, P. R. (2)
Öberg, Sven (2)
Eberlein, T.A.G. (2)
Prezzi, D. (2)
Hourahine, B. (1)
visa fler...
Shaw, M.J. (1)
Filhol, J-S (1)
visa färre...
Lärosäte
Luleå tekniska universitet (2)
Språk
Engelska (2)
Forskningsämne (UKÄ/SCB)
Naturvetenskap (2)
År
2004 (2)

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy