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Singh, J., Kumar, P., Late, D. J., Singh, T., More, M. A., Joag, D. S., Tiwari, R. S., Hui, K. S. 
ORCID: https://orcid.org/0000-0001-7089-7587, Hui, K. N. and Srivastava, O. N.
(2012)
Optical and field emission properties in different nanostructures of ZnO.
Digest Journal of Nanomaterials and Biostructures, 7 (2).
pp. 795-806.
ISSN 1842-3582
Abstract
ZnO nanostructures with different morphologies e.g. nanotetrapods, nanorods, nanocombs and nanoaeroplanes has been fabricated by evaporation of pure zinc powder without catalysts in the temperature range of 400~900 °C. The structures and properties of obtained products were examined using scanning electron microscopy, transmission electron microscopy, selected area electron diffraction, X-ray diffraction, room temperature photoluminescence and field emission. Photoluminescence spectra showed an ultravoilet-green emission and strong orange-red emission peaks at room temperature. The field emission studies of the as grown nanocombs revealed that threshold field, required to draw a current density of ~1.0 μA/cm2 is ~ 1.4 V/μm. An emission current density of ~9.05 μA/cm2 has been drawn from nanocombs at an applied electric field of ~ 1.92 V/μm. The field enhancement factor found to be ~8050, indicating that the electron emission from nanometric dimension of the emitter. Such, ZnO nanostructures are likely to be candidates as building blocks for constructing photonic and flat panel display.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | current stability,field emission,nanocombs,nanowires,zno |
| Faculty \ School: | Faculty of Science > School of Engineering (former - to 2024) University of East Anglia Research Groups/Centres > Theme - ClimateUEA |
| UEA Research Groups: | Faculty of Science > Research Groups > Energy Materials Laboratory Faculty of Science > Research Groups > Emerging Technologies for Electric Vehicles (EV) |
| Related URLs: | |
| Depositing User: | Pure Connector |
| Date Deposited: | 04 Oct 2016 12:02 |
| Last Modified: | 25 Sep 2024 12:16 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/60697 |
| DOI: |
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