Electronic structure of an oxygen vacancy in Al2O3 from the results of Ab Initio quantum-chemical calculations and photoluminescence experiments
The electronic structure of an oxygen vacancy in α-Al 2 O 3 and γ-Al 2 O 3 is calculated. The calculation predicts an absorption peak at an energy of 6.4 and 6.3 eV in α-Al 2 O 3 and γ-Al 2 O 3 , respectively. The luminescence and luminescence excitation spectra of amorphous Al 2 O 3 are measured us...
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| Veröffentlicht in: | Journal of experimental and theoretical physics 2010, Vol.111 (6), p.989-995 |
|---|---|
| Hauptverfasser: | , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | The electronic structure of an oxygen vacancy in α-Al
2
O
3
and γ-Al
2
O
3
is calculated. The calculation predicts an absorption peak at an energy of 6.4 and 6.3 eV in α-Al
2
O
3
and γ-Al
2
O
3
, respectively. The luminescence and luminescence excitation spectra of amorphous Al
2
O
3
are measured using synchrotron radiation. The presence of a luminescence band at 2.9 eV and a peak at 6.2 eV in the luminescence excitation spectrum indicates the presence of oxygen vacancies in amorphous Al
2
O
3
. |
|---|---|
| ISSN: | 1063-7761 1090-6509 |
| DOI: | 10.1134/S1063776110120113 |