Please use this identifier to cite or link to this item: https://doi.org/10.1504/IJNT.2007.015464
Title: Self assembled ZnO hollow spheres and hexagonal stacking disks by metal-organic chemical-vapour deposition
Authors: Tan, S.T.
Sun, X.W.
Zhang, X.H.
Chua, S.J. 
Chow, S.Y.
Yong, A.M.
Lo, G.Q.
Kwong, D.L.
Keywords: Hollow spheres
MOCVD
Nanostructures
Wide-bandgap semiconductors
ZnO
Issue Date: Oct-2007
Source: Tan, S.T.,Sun, X.W.,Zhang, X.H.,Chua, S.J.,Chow, S.Y.,Yong, A.M.,Lo, G.Q.,Kwong, D.L. (2007-10). Self assembled ZnO hollow spheres and hexagonal stacking disks by metal-organic chemical-vapour deposition. International Journal of Nanotechnology 4 (6) : 691-701. ScholarBank@NUS Repository. https://doi.org/10.1504/IJNT.2007.015464
Abstract: Self-assembled ZnO hollow spheres and hexagonal stacking disks were synthesised by metal-organic chemical-vapour deposition. The growth process was investigated as a function of time and the sphere and disk structures were obtained in a narrow window of a near-zero oxygen partial pressure. The largest hollow sphere has a diameter up to 20 μm with a shell thickness of around 200 nm formed by nanocrystals or nanodisks. The hexagonal stacking disks were found to be covered with a few nanometres thick of metallic Zn observed by high-resolution transmission electron microscopy. The accumulation and dissociation of diethylzine through beta hydride elimination process in the near-zero oxygen partial pressure was thought to be the reason for the formation of the hollow spheres and stacking disks. Copyright © 2007 Inderscience Enterprises Ltd.
Source Title: International Journal of Nanotechnology
URI: http://scholarbank.nus.edu.sg/handle/10635/57356
ISSN: 14757435
DOI: 10.1504/IJNT.2007.015464
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