Large field enhancement at electrochemically grown quasi-1D Ni nanostructures with low-threshold cold-field electron emission

Title
Large field enhancement at electrochemically grown quasi-1D Ni nanostructures with low-threshold cold-field electron emission
Author(s)
주상우바너지나라얀스즈첸
Keywords
HEXAGONAL PORE ARRAYS; DIAMOND-LIKE CARBON; ANODIC-ALUMINA; NANOWIRE ARRAYS; FILMS; SUBSTRATE; DEPOSITION; NANOTUBES; CATHODES; NANORODS
Issue Date
201101
Publisher
IOP PUBLISHING LTD
Citation
NANOTECHNOLOGY, v.22, no.3
Abstract
Ni nanorod arrays have been vertically grown on a Ta-coated Si substrate via an electrodeposition process through the nanopores of a porous alumina membrane. Field emission studies of the samples are performed which show a considerable low-threshold field around 5 V mu m(-1). The field emission mechanism followed Fowler-Nordheim tunneling due to large field enhancement at the emitter tips. Low-dimensional structures of the nanorod tips provided the large geometrical field enhancement and thus produce a high enough local or barrier field for low-threshold cold-field electron emission. The cost-effective synthesis of vertically aligned Ni nanorods on an Si substrate and low-threshold field emission properties can provide a potential alternative to conventional carbon-based field emitters for low power panel applications.
URI
http://hdl.handle.net/YU.REPOSITORY/25798http://dx.doi.org/10.1088/0957-4484/22/3/035702
ISSN
0957-4484
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공과대학 > 기계공학부 > Articles
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