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Growth of Na0.3WO3 nanorods for the field emission application

Azimirad, R ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1088/0022-3727/42/20/205405
  3. Publisher: 2009
  4. Abstract:
  5. Na0.3WO3 1D nanostructure forms (nanorods and nanobelts) were grown by a solid-liquid-solid mechanism from a 40 nm sputtered tungsten film deposited on a soda-lime substrate and annealed at 700 °C in a tubular furnace in N2 ambient. The morphology, structure, composition and chemical state of the prepared nanostructures were characterized by SEM, XRD, TEM, SAED and XPS measurements. The Na0.3WO3 1D nanostructures were found to have a cubic crystalline structure and grown along the [0 0 1] direction. The nanorods are a few micrometres in length and about 50 nm in diameter. The field-emission application of the prepared samples at different distances between the cathode and the anode was characterized in a UHV chamber at room temperature and a field enhancement factor of 1736 at a distance of 350 νm was found. © 2009 IOP Publishing Ltd
  6. Keywords:
  7. 1D nanostructures ; Chemical state ; Cubic crystalline ; Field emission application ; Field enhancement factor ; Room temperature ; SEM ; Soda lime ; Solid-liquid-solid mechanisms ; Tubular furnaces ; Tungsten films ; UHV chambers ; XPS measurements ; XRD , TEM ; Field emission ; Field emission cathodes ; Nanorods ; Sodium ; Tungsten ; Nanobelts
  8. Source: Journal of Physics D: Applied Physics ; Volume 42, Issue 20 , 2009 ; 00223727 (ISSN)
  9. URL: https://iopscience.iop.org/article/10.1088/0022-3727/42/20/205405