Synthesis and characterization of one-dimensional CdSe nanostructures

G. X. Wang, University of Wollongong
M. S. Park, University of Wollongong
H. K. Liu, University of Wollongong
D. Wexler, University of Wollongong
J. Chen, University of Wollongong

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This article was originally published as Wang, GX, Park, MS, Liu, HK et al, Synthesis and characterization of one-dimensional CdSe nanostructures, Applied Physics Letters, 88, 2006, 193115. Original journal available here.

Abstract

One-dimensional
1D CdSe nanostructures, including nanowires, nanotubes, nanorods, nanobelts, and even nanostructures resembling saws and tree branches, have been synthesized by sublimation of CdSe powders under various experimental conditions. These 1D CdSe nanostructures were characterized by scanning electron microscopy, high resolution transmission electron microscopy observations, and Raman spectroscopy. Energy dispersive x-ray spectroscopy analysis confirmed the chemical stoichiometry of the CdSe nanostructures. It was found that the geometrical morphologies of the CdSe 1D nanostructures were significantly influenced by the synthetic parameters. Raman spectra of CdSe nanowires show an upward shift of the 2LO phonon peak.