The catalyst-free synthesis of large-area tungsten oxide nanowire arrays on ITO substrate and field emission properties
- School of Physics Science and Technology, Lanzhou University, Lanzhou 730000 (China)
Tungsten oxide nanowire arrays have been grown on indium tin oxide coated glass substrate using tungsten trioxide powders as source by thermal evaporation approach without any catalysts. When the O{sub 2}/Ar flow rate ratio was 1/100, large-scale, high-density and uniformly distributed tungsten oxide nanowire arrays were obtained. The morphology and structure properties of the tungsten oxide nanowires were characterized by scanning electron microscopy, X-ray diffraction, and transmission electron microscopy. The influences of the oxygen concentration on the growth, density, shape and structure of the nanowires were investigated. The possible growth mechanism which governs the various types of nanowire arrays as the O{sub 2}/Ar flow rate ratios changed is also discussed. Field emission properties of tungsten oxide nanowire arrays were studied at a poor vacuum condition. The remarkable performance reveals that the tungsten oxide nanowire arrays can be served as a good candidate for commercial application as electron emitters.
- OSTI ID:
- 21068244
- Journal Information:
- Materials Research Bulletin, Vol. 43, Issue 4; Other Information: DOI: 10.1016/j.materresbull.2007.04.036; PII: S0025-5408(07)00189-4; Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
Similar Records
Electrodeposition of gold nanoparticle arrays on ITO glass as electrode with high electrocatalytic activity
Effect of supersonic spraying impact velocity on opto-electric properties of transparent conducting flexible films consisting of silver nanowire, ITO, and polyimide multilayers