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Synthesis and Raman analysis of 1D-ZnO nanostructure via vapor phase growth
- Source :
-
Applied Surface Science . Feb2005, Vol. 240 Issue 1-4, p175-179. 5p. - Publication Year :
- 2005
-
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 °C. The different ZnO nanostructures depend on the substrates and the growth temperatures. Scanning electron microscopy and X-ray diffraction revealed that a well-aligned 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 °C. 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. [Copyright &y& Elsevier]
- Subjects :
- *ZINC oxide
*NANOSTRUCTURES
*ELECTRON microscopy
*POWDER metallurgy
Subjects
Details
- Language :
- English
- ISSN :
- 01694332
- Volume :
- 240
- Issue :
- 1-4
- Database :
- Academic Search Index
- Journal :
- Applied Surface Science
- Publication Type :
- Academic Journal
- Accession number :
- 15646868
- Full Text :
- https://doi.org/10.1016/j.apsusc.2004.06.053