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Synthesis, characterization and field emission properties of tin oxide nanowires

Rikka, Vallabha Rao and Sameera, I and Bhatia, Ravi and Prasad, V (2015) Synthesis, characterization and field emission properties of tin oxide nanowires. In: MATERIALS CHEMISTRY AND PHYSICS, 166 . pp. 26-30.

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Official URL: http://dx.doi.org/10.1016/j.matchemphys.2015.09.03...

Abstract

Tin oxide (SnO2) nanowires are synthesized by Au catalyzed chemical vapor deposition of Sn and C mixture at 900 degrees C by employing a continuous flow of Ar: O-2 (10:1) for an hour. X-ray diffraction and Raman spectroscopy studies indicate that the as-grown SnO2 nanowires are crystalline in nature with tetragonal rutile phase. Electron microscopy studies reveal towards high aspect ratio of nanowires. The field emission studies show that SnO2 nanowires grown on Si substrate exhibit low turn-on field of 1.75 V/mu m (at 0.1 mu A/cm(2)) and long-term emission stability over a period of more than 50 h with a current density of 4 mu A/cm(2) at a constant electric field of 2.25 V/mu m. Hardly any considerable degradation in the emission current is noticed even after 50 h which may be attributed to the high crystallinity of SnO2 nanowires. (C) 2015 Elsevier B.V. All rights reserved.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND
Keywords: Nanostructures; Electronic materials; Chemical vapor deposition (CVD); Field emission
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Division of Physical & Mathematical Sciences > Physics
Depositing User: Id for Latest eprints
Date Deposited: 10 Dec 2015 06:11
Last Modified: 10 Dec 2015 06:11
URI: http://eprints.iisc.ac.in/id/eprint/52890

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