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Improved field emission from multiwall carbon nanotubes with nano-size defects produced by ultra-low energy ion bombardment

DSpace at IIT Bombay

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Title Improved field emission from multiwall carbon nanotubes with nano-size defects produced by ultra-low energy ion bombardment
 
Creator HAZRA, KS
KORATKAR, NA
MISRA, DS
 
Subject ELECTRON-BEAM
IRRADIATION
PLASMA
FILMS
 
Description Multiwalled carbon nanotubes were irradiated with ultra-low energy (few eV) nitrogen and hydrogen ions using a microwave discharge. These ultra-low energy plasma-ions remain confined to the nanotube walls, transferring their maximum energy to the carbon atoms, and produce extraordinary structural changes to the carbon nanotube pillars as well as within the carbon nanotubes. Conical shaped emitters and nanotube structures with nano-defects are produced that exhibit remarkable field emission with ultra-low turn-on electric field (similar to 0.16 V/mu m) and a >300-fold increase in the maximum emission current density compared to non-irradiated nanotubes. Doping of nitrogen is also identified due to such irradiation processes. (C) 2011 Elsevier Ltd. All rights reserved.
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2012-06-26T06:24:48Z
2012-06-26T06:24:48Z
2011
 
Type Article
 
Identifier CARBON,49(14)4760-4766
0008-6223
http://dx.doi.org/10.1016/j.carbon.2011.06.085
http://dspace.library.iitb.ac.in/jspui/handle/100/14030
 
Language English