Efficient field emission properties of ZnO (core)/graphite (shell) nanowires

Sameera, I and Bhatia, Ravi and Prasad, V (2012) Efficient field emission properties of ZnO (core)/graphite (shell) nanowires. In: MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, 177 (13). pp. 1090-1093.

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Abstract

In this work the field emission studies of a new type of field emitter, zinc oxide (ZnO) core/graphitic (g-C) shell nanowires are presented. The nanowires are synthesized by chemical vapor deposition of zinc acetate at 1300 degrees C Scanning and transmission electron microscopy characterization confirm high aspect ratio and novel core-shell morphology of the nanowires. Raman spectrum of the nanowires mat represents the characteristic Raman modes from g-C shell as well as from the ZnO core. A low turn on field of 2.75 V/mu m and a high current density of 1.0 mA/cm(2) at 4.5 V/mu m for ZnO/g-C nanowires ensure the superior field emission behavior compared to the bare ZnO nanowires. (C) 2012 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
Publisher:	ELSEVIER SCIENCE BV
Additional Information:	Copyright for this article belongs to ELSEVIER SCIENCE
Keywords:	Nanostructures;Scanning and transmission electron microscopy;Field emission
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	08 Nov 2012 11:08
Last Modified:	08 Nov 2012 11:08
URI:	http://eprints.iisc.ac.in/id/eprint/45330

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