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Growth of carbon nanotube arrays using nanosphere lithography and their application in field emission devices

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

Mathur, A, Roy, SS, Hazra, KS, Misra, DS and McLaughlin, JAD (2010) Growth of carbon nanotube arrays using nanosphere lithography and their application in field emission devices. Diamond and Related Materials, 19 (7-9). pp. 914-917. [Journal article]

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URL: http://dx.doi.org/10.1016/j.diamond.2010.02.042

DOI: doi:10.1016/j.diamond.2010.02.042

Abstract

The present study investigates the patterned growth of carbon nanotubes (CNTs) by microwave plasma assisted chemical vapor deposition (MPCVD) and their field emission (FE) properties. The nanosphere monolayers were used as a mask for deposition of ultrathin (~ 3 nm) cobalt (Co) layer by DC sputtering. Periodic arrays of Co catalyst islands were obtained after the removal of spheres. Microscopic and Raman spectroscopic studies revealed the patterned growth of multiwall CNTs on catalyst islands. The CNTs length was around 10 µm and diameter was of 40–60 nm. The field emission properties were also compared with I–V characteristics of the un-patterned CNTs grown under the same conditions. The onset fields for un-patterned and patterned samples were nearly the same, 0.64 V/µm and 0.67 V/µm, respectively for a 10 µA current.

Item Type:Journal article
Keywords:Carbon nanotubes; Plasma CVD; Field emission
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:13896
Deposited By:Mrs Ann Blair
Deposited On:02 Jun 2010 09:29
Last Modified:07 Apr 2014 11:34

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