Luminescence properties of wurtzite AlN nanotips

Shih Chen Shi, Chia Fu Chen, Surojit Chattopadhyay*, Kuei Hsien Chen, Bo Wen Ke, Li Chyong Chen, Laima Trinkler, Baiba Berzina

*此作品的通信作者

研究成果: Article同行評審

49 引文 斯高帕斯(Scopus)

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 ∼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 °C suggests possible ultraviolet detector and dosimetric applications of these AlNNTs.

原文English
文章編號163127
期刊Applied Physics Letters
89
發行號16
DOIs
出版狀態Published - 2006

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