標題: Luminescence properties of wurtzite AlN nanotips
作者: Shi, Shih-Chen
Chen, Chia Fu
Chattopadhyay, Surojit
Chen, Kuei-Hsien
Ke, Bo-Wen
Chen, Li-Chyong
Trinkler, Laima
Berzina, Baiba
材料科學與工程學系
Department of Materials Science and Engineering
公開日期: 16-Oct-2006
摘要: 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 3.4 eV and an excitonic feature at 6.2 eV were identified. Compared to the AlN macropowders, the AlNNTs showed a blueshift (+0.2 eV) of the similar to 3.2 eV 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 degrees C suggests possible ultraviolet detector and dosimetric applications of these AlNNTs. (c) 2006 American Institute of Physics.
URI: http://dx.doi.org/10.1063/1.2364158
http://hdl.handle.net/11536/11669
ISSN: 0003-6951
DOI: 10.1063/1.2364158
期刊: APPLIED PHYSICS LETTERS
Volume: 89
Issue: 16
結束頁: 
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