Direct synthesis and strong cathodoluminescence of Al2O3 nanotubes
Data(s) |
15/04/2010
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Resumo |
α-Al<sub>2</sub>O<sub>3</sub> nanotubes were synthesized in bulk quantity by using simple physical evaporation of pure aluminum powders at 1000 °C. Field emission scanning electron microscopy and transmission electron microscopy observations show that the nanotubes have diameters smaller than 100 nm and lengths up to several microns. Cathodoluminescence measurements revealed a strong luminescence band in the wavelength range of 280–380 nm centered at 330 nm, which could be attributed to the oxygen vacancies in the α-Al<sub>2</sub>O<sub>3</sub> nanotubes. Sacrificial template model is regarded as the possible formation mechanism of the nanotubes.<br /> |
Identificador | |
Idioma(s) |
eng |
Publicador |
Elsevier B.V. |
Relação |
http://dro.deakin.edu.au/eserv/DU:30035062/yang-directsynthesis-2010.pdf http://dx.doi.org/10.1016/j.matchemphys.2009.12.027 |
Direitos |
2009, Elsevier B.V. |
Palavras-Chave | #nanostructures #physical vapor deposition #defects #x-ray diffraction |
Tipo |
Journal Article |