The growth of Sb nanowires on
GaSb(111)A substrates is studied by in situ azimuthal scan reflection
high-energy electron diffraction (ARHEED). Bulk and layer contributions can be
distinguished in the ARHEED transmission pattern through the Sb nanowires. The
three-dimensional structure of the growing Sb nanowires is identified by
post-growth atomic force microscopy (AFM) and x-ray diffraction (XRD). The
lattice match of the Sb crystal along the $\langle \bar {2}10\rangle $ and the
GaSb crystal along $\langle \bar {1}10\rangle $ directions lead to a
preferential orientation of the Sb nanowires. The Sb adsorption and desorption
kinetics is studied by thermal desorption spectroscopy.
Source:IOPscience
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