Luminescence properties of wurtzite AlN nanotips
Journal
Applied Physics Letters
Journal Volume
89
Journal Issue
16
Pages
163127-1 - 163127-3
Date Issued
2006
Author(s)
Abstract
The optical properties of aluminum nitride nanotips (AlNNTs) synthesized via vapor transport and condensation process have been studied by cathodoluminescence, photoluminescence (PL), thermoluminescence (TL), and UV absorption measurements. Two defect related transitions around 2.1 and 3.4eV and an excitonic feature at 6.2eV were identified. Compared to the AlN macropowders, the AlNNTs showed a blueshift (+0.2eV) of the ∼3.2eV peak. Analysis of both PL and TL excitation measurements indicated the existence of subband gap multiple energy levels in AlNNTs. A significant TL intensity even at 145°C suggests possible ultraviolet detector and dosimetric applications of these AlNNTs.
SDGs
Publisher
American Institute of Physics
Type
journal article