Cathodoluminescence of oxygen-vacancy centers in structures of aluminum nitride

Cathodoluminescence of oxygen-vacancy centers in structures of aluminum nitride

Spectra of the cathodoluminescence (CL) of single crystals and micropowders of AlN are studied. It is shown that bands with maxima at 3.2, 2.7 and 2.1 eV can be observed in the CL. The peaks at 2.7 and 3.2 eV are associated with O N centers and complexes of the type ( V Al -O N ); the 2.1 eV band is...

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Veröffentlicht in:Bulletin of the Russian Academy of Sciences. Physics 2015-02, Vol.79 (2), p.211-214
Hauptverfasser: Spiridonov, D. M., Weinstein, I. A., Vokhmintsev, A. S., Beketov, A. R.
Format: Artikel
Sprache:eng
Schlagworte:
2014
Aluminum
Aluminum nitride
Cathodoluminescence
Hadrons
Heavy Ions
Lattice vacancies
Maxima
Nuclear Physics
Physics
Physics and Astronomy
Proceedings of the International Conference “Luminescence and Laser Physics
Single crystals
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Beschreibung
Zusammenfassung:Spectra of the cathodoluminescence (CL) of single crystals and micropowders of AlN are studied. It is shown that bands with maxima at 3.2, 2.7 and 2.1 eV can be observed in the CL. The peaks at 2.7 and 3.2 eV are associated with O N centers and complexes of the type ( V Al -O N ); the 2.1 eV band is due to recombination processes involving cation vacancies. The narrow CL peak at 1.77 eV is also observed for AlN powder and is attributed to Cr 3+ impurities.
ISSN:1062-8738
1934-9432
DOI:10.3103/S106287381502029X