Synthesis of hexagonal monocrystal AlN microtubes and nanowires at low temperature |
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| Authors: | Lv Hui-Min Chen Guang-De Yan Guo-Jun and Ye Hong-Gang |
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| Affiliation: | Department of Applied Physics, Xi'an Jiaotong University, Xi'an 710049, China; Department of Applied Physics, Xi'an University of Technology, Xi'an 710048, China |
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| Abstract: | This paper reports that pure hexagonal aluminium nitride microtubes
and nanowires growing along the 0001] direction have been
successfully synthesized by directly reacting AlCl$_{3}$ with
NaN$_{3}$ at low temperature (450\du) under condition of non-solvent
system. The grey--white powder of reacting product was characterized
by high-resolution transmission electron microscope (HRTEM), which
shows that the powder is long straight-wire morphology with outer
diameter from 40\,nm to 300\,nm and length up to several micrometres.
The results of both electron diffraction (ED) and x-ray diffraction
(XRD) indicate that the AlN microtubes have a pure hexagonal
monocrystal tubular structure with the combination of the curled AlN
nanobelts. Room-temperature photoluminescence spectrum of the
synthesized sample showed an emission peak, which is closely related
to the small size of the microtubes. |
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| Keywords: | h-AlN microtubes nanowires |
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