Luminescence properties of AlN nanostructures revealed under UV light irradiation
Journal
Journal of Physics: Conference Series
Journal Volume
93
Journal Issue
1
Pages
1-8
Date Issued
2007
Author(s)
Abstract
The luminescence properties of the AlN nanostructures – nanorods and nanotips -revealed under the UV irradiation are similar to those of the AlN ceramics. Presumably they are induced by the recombination processes in the oxygen-related centers. All the studied luminescence processes (photoluminescence, thermoluminescence and optically stimulated luminescence) in the nanostructures occur mainly through the host lattice excitation. That may be explained by the smaller concentration of the defect centers and more perfect structure of the host lattice of the nanostructures compared to the ceramics. The small mutual differences revealed in the spectra and TL curves of the AlN nanotips and nanorods possibly arise due to the modifications of the host lattice structure and variations of the defect concentration during production of the samples.
Publisher
Institute of Physics Publishing
Type
journal article