Abstract :
1D-nanostructural zinc oxide (ZnO) with different shapes have been synthesized on p-type Si(1 0 0) and glass substrates via
vapor phase growth by heating pure zinc powder at temperatures between 480 and 570 8C. The different ZnO nanostructures
depend on the substrates and the growth temperatures. Scanning electron microscopy and X-ray diffraction revealed that a wellaligned
nanowires array, which are vertical to the substrate of Si(1 0 0) with 18 sides on their heads, but six sides on their stems,
has been formed at 480 8C. Raman study on the ZnO nanostructures shows that the coupling strength between electron and
phonon determined by the ratio of the second- to the first-order Raman scattering cross-sections declines with decreasing
diameter of the nanowires. However, a little changes of the coupling strength in terms of the width of the nanobelts have been
observed
