Gupta, Bipin Kumar and D , Haranath and Chawla, S. and Chander, H. and Singh, V. N. and Shanker, Virendra (2010) Self-catalytic synthesis, structure and properties of ultra-fine luminescent ZnO nanostructures for field emission applications. Nanotechnology , 21 (22). 225709-1 -225709-8 . ISSN 1361-6528

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Abstract

A facile method to produce high-quality ZnO nanostructures; either tetrapod (TP), nanotetraneedle (NTN) or multipod (MP) with a high degree of homogeneity for advanced field emission (FE) applications is presented. Among these nanostructures, NTN has been successfully employed to demonstrate enhanced current densities (2.6 mA cm − 2), turn-on field (1.5 V µm − 1) and field-enhancement factors (6930) over conventional multiwalled carbon nanotubes (MWCNTs), TP, MP and ZnO-spheroids. A comparative study of FE from various ZnO nanostructures, morphologies and site densities has lead to the conclusion that diameter of the tip is one of the vital parameters in enhancing the overall FE properties.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Institute of Physics.
Subjects:	Materials Science Physics
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	09 Jul 2012 07:06
Last Modified:	09 Jul 2012 07:06
URI:	http://npl.csircentral.net/id/eprint/304

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