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Title: Optical and field emission properties of Zinc Oxide nanostructures
Authors: Hui, P. 
Yanwu, Z. 
Zhenhua, N.
Han, S.
Cheekok, P. 
Sanhua, L.
Chornghaur, S. 
Zexiang, S. 
Yuanping, F. 
Jianyi, L. 
Keywords: Field emission properties
ZnO nanostructures
Issue Date: 2005
Citation: Hui, P., Yanwu, Z., Zhenhua, N., Han, S., Cheekok, P., Sanhua, L., Chornghaur, S., Zexiang, S., Yuanping, F., Jianyi, L. (2005). Optical and field emission properties of Zinc Oxide nanostructures. Journal of Nanoscience and Nanotechnology 5 (10) : 1683-1687. ScholarBank@NUS Repository.
Abstract: Zinc Oxide (ZnO) nano-pikes were produced by oxidative evaporation and condensation of Zn powders. The crystalline structure and optical properties of the ZnO nanostructures (ZnONs) greatly depend on the deposition position of the ZnONs. TEM and XRD indicated that the ZnONs close to the reactor center, ZnON-A, has better crystalline structure than the ZnONs away from the center, ZnON-B. ZnON-A showed the PL and Raman spectra characteristic of perfect ZnO crystals, whereas ZnON-B produced very strong green emission band at 500 nm in the photoluminescence (PL) spectrum and very strong Raman scattering peak at 560 cm -1, both related to the oxygen deficiency due to insufficient oxidation of zinc vapor. ZnON-B exhibited better field emission properties with higher emission current density and lower turn-on field than ZnON-A. Copyright © 2005 American Scientific Publishers All rights reserved.
Source Title: Journal of Nanoscience and Nanotechnology
ISSN: 15334880
DOI: 10.1166/jnn.2005.183
Appears in Collections:Staff Publications

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