Record Details

Dramatic Enhancement of the Emission Current Density from Carbon Nanotube Based Nanosize Tips with Extremely Low Onset Fields

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title Dramatic Enhancement of the Emission Current Density from Carbon Nanotube Based Nanosize Tips with Extremely Low Onset Fields
 
Creator HAZRA, KS
RAI, P
MOHAPATRA, DR
KULSHRESTHA, N
BAJPAI, R
ROY, S
MISRA, DS
 
Subject electron-emission
emitters
bundle
arrays
carbon nanotube
onset field
field emission
plasma-sharpened tip
square hill potential barrier
 
Description Nanostructures based on multiwalled carbon nanotubes (MWNTs) are fabricated using plasma of the mixture of hydrogen and nitrogen gases. The plasma-sharpened tips of nanotubes contain only a few tubes at the apex of the structure and lead to the dramatic enhancement in the emission current density by a factor >10(6) with the onset field as low as 0.16 V/mu m. We propose that the nature of the tunneling barrier changes significantly for a nanosize tip at very high local electric field and may lead to the saturation in the emission current density.
 
Publisher AMER CHEMICAL SOC
 
Date 2011-07-13T23:43:41Z
2011-12-26T12:47:26Z
2011-12-27T05:33:54Z
2011-07-13T23:43:41Z
2011-12-26T12:47:26Z
2011-12-27T05:33:54Z
2009
 
Type Article
 
Identifier ACS NANO, 3(9), 2617-2622
1936-0851
http://dx.doi.org/10.1021/nn900674e
http://dspace.library.iitb.ac.in/xmlui/handle/10054/3802
http://hdl.handle.net/10054/3802
 
Language en