Surface diffusion controlled formation of high quality vertically aligned InN nanotubes
Journal
Journal of Applied Physics
Journal Volume
116
Journal Issue
12
Pages
124301-1 - 124301-4
Date Issued
2014
Author(s)
Abstract
We present a successful growth of high quality indium nitride (InN) nanotubes via surface diffusion controlled processes. The nanotubes exhibit high aspect ratios and high homogeneity in length and wall thickness. Analysis of the growth suggests that the nucleation of hexagonal InN platelets followed by thermally induced surface diffusion of indium along the walls of templates, with simultaneous nitridation, forms the InN nanotubes. The nanotubes effectively bear the lateral dimensions of the starting platelet. The crystal structure characterization by transmission electron microscopy and X-ray diffraction reveals their wurtzite structure and c (002) growth direction. Photoluminescence spectra of the molecular beam epitaxy-grown InN nanotubes exhibit an optical band gap near 0.68 eV at room temperature, which implies the conspicuous reduction of band filling effect caused by the impurities incorporations.
Publisher
American Institute of Physics Inc.
Type
journal article