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Enhancement of electron field emission of nitrogenated carbon nanotubes on chlorination

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Ray, SC, Palnitkar, U, Pao, CW, Tsai, HM, Pong, WF, Lin, IN, Papakonstantinou, P, Chen, LC and Chen, KH (2009) Enhancement of electron field emission of nitrogenated carbon nanotubes on chlorination. DIAMOND AND RELATED MATERIALS, 18 (2-3). pp. 457-460. [Journal article]

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DOI: 10.1016/j.diamond.2008.07.016

Abstract

Multi-wall nitrogenated carbon nanotubes (N-CNTs) are modified by the chlorine-plasma treatment (N-CNTs: CI) and hence studied their field emission characteristics. It is observed that the turn-on voltage of N-CNTs is decreased from similar to 1.0 V/mu m to -0.875 V/mu m on chlorination. The current density is enhanced from 1.3 mA/cm(2) (N-CNTs) to similar to 15 mA/cm(2) (N-CNTs:Cl) at an electric field of 1.9 V/mu m. The X-ray absorption near edge structure spectra revels, the formation of different bonding of chlorine with carbon and nitrogen presence in the N-CNTs during the process of chlorine-plasma treatment by the charge transfer (or else) that increase the density of free charge carriers and hence enhanced the field emission characteristics of N-CNTs:Cl. (c) 2008 Elsevier B.V. All rights reserved.

Item Type:Journal article
Keywords:Nitrogenated Carbon Nanotubes (N-CNTs); Chlorinated nitrogenated carbon nanotube (N-CNTs:Cl); Electron Field Emission (EFE)
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
ID Code:6391
Deposited By:Professor Pagona Papakonstantinou
Deposited On:13 Jan 2010 09:49
Last Modified:18 Aug 2011 11:56

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