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The role of tunneling barrier modification for the saturation current of carbon nanotube field emission in strong electric field

DSpace at IIT Bombay

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Title The role of tunneling barrier modification for the saturation current of carbon nanotube field emission in strong electric field
 
Creator HAZRA, KS
JAIN, V
MISRA, DS
 
Subject EMITTERS
ENHANCEMENT
MECHANISMS
DIAMOND
ARRAY
 
Description Based on quantum mechanical tunneling of electrons in field emission, a new model has been described to explain the saturation of emission current for carbon nanotube (CNT) emitters. The formulation reveals the effect of geometrical aspect ratio of CNT and the effect of high electric field for non-Fowler-Nordheim (F-N) behavior in field emission characteristics. It is found that for a CNT of aspect ratio similar to 10(3), the tunneling barrier converges to a constant square potential well of a small thickness, at applied electric field >= 3 x 10(6) V/m, resulting in field independent emission current. (C) 2010 Elsevier B.V. All rights reserved.
 
Publisher ELSEVIER SCIENCE BV
 
Date 2012-06-26T06:35:51Z
2012-06-26T06:35:51Z
2011
 
Type Article
 
Identifier CHEMICAL PHYSICS LETTERS,502(4-6)194-197
0009-2614
http://dx.doi.org/10.1016/j.cplett.2010.12.032
http://dspace.library.iitb.ac.in/jspui/handle/100/14052
 
Language English