Hydrogen-related photoluminescent centers in SiC

D. Prezzi, T.A.G. Eberlein, R. Jones, B. Hourahine, P.R. Briddon, S. Öberg

Research output: Contribution to journalArticle

2 Citations (Scopus)

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.
LanguageEnglish
Article number205207
Number of pages5
JournalPhysical Review B: Condensed Matter and Materials Physics
Volume70
Issue number20
DOIs
Publication statusPublished - 12 Nov 2004

Fingerprint

Hydrogen
vibration mode
H lines
Defects
defects
hydrogen
Electronic structure
Density functional theory
Quenching
Carbon
quenching
electronic structure
Radiation
Molecules
carbon
radiation
molecules
Experiments

Keywords

  • local density functional calculations
  • photoluminescent centers
  • SiC
  • nanoscience

Cite this

Prezzi, D. ; Eberlein, T.A.G. ; Jones, R. ; Hourahine, B. ; Briddon, P.R. ; Öberg, S. / Hydrogen-related photoluminescent centers in SiC. In: Physical Review B: Condensed Matter and Materials Physics. 2004 ; Vol. 70, No. 20.
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Hydrogen-related photoluminescent centers in SiC. / Prezzi, D.; Eberlein, T.A.G.; Jones, R.; Hourahine, B.; Briddon, P.R.; Öberg, S.

In: Physical Review B: Condensed Matter and Materials Physics, Vol. 70, No. 20, 205207, 12.11.2004.

Research output: Contribution to journalArticle

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T1 - Hydrogen-related photoluminescent centers in SiC

AU - Prezzi, D.

AU - Eberlein, T.A.G.

AU - Jones, R.

AU - Hourahine, B.

AU - Briddon, P.R.

AU - Öberg, S.

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