Abstract
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 ON centers and complexes of the type (VAl-ON); 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 Cr3+ impurities.
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More From: Bulletin of the Russian Academy of Sciences: Physics
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