Paper Title:
ZnO Nanowalls and Nanocolumns Grown by Metalorganic Chemical Vapor Deposition
  Abstract

ZnO nanowalls and nanocolumns were synthesized on Si3N4 (50 nm)/Si (001) substrates at low growth temperature (350 and 400 oC) by metalorganic chemical vapor deposition (MOCVD) with no metal catalysts. ZnO nanowalls with extremely small wall thicknesses below 10 nm and nanocolumns with diameters over 100 nm were formed on the Si3N4/Si substrates relying on MOCVD-growth temperature. It was found that ZnO nanowalls have a strong c-axis preferred orientation with a hexagonal structure, while ZnO nanocolumns have a weak c-axis preferred orientation with broken stacking orders in synchrotron x-ray scattering experiments. In addition, strong free-exciton emission from the ZnO nanowalls was clearly observed in photoluminescence measurements. On the other hand, we could not observe any emission bands from the ZnO nanocolumn samples.

  Info
Periodical
Solid State Phenomena (Volumes 124-126)
Edited by
Byung Tae Ahn, Hyeongtag Jeon, Bo Young Hur, Kibae Kim and Jong Wan Park
Pages
77-80
DOI
10.4028/www.scientific.net/SSP.124-126.77
Citation
S. W. Kim, S. Fujita, M. S. Yi, H. K. Kim, B. L. Yang, D. H. Yoon, "ZnO Nanowalls and Nanocolumns Grown by Metalorganic Chemical Vapor Deposition", Solid State Phenomena, Vols. 124-126, pp. 77-80, 2007
Online since
June 2007
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Price
$32.00
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