The Effect of Surface Treatments on the Field Emission Characteristics of Patterned Carbon Nanotubes on KOVAR Substrate

Title
The Effect of Surface Treatments on the Field Emission Characteristics of Patterned Carbon Nanotubes on KOVAR Substrate
Authors
이근수이양두강병현동기영백진호빈센트 라우 춘 파이김원석양철민주병권
Keywords
Multi-walled carbon nanotubes; Field emission characteristics; KOVAR; Surface treatment; Roughness factor
Issue Date
2012-07
Publisher
Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology
Citation
VOL 14, NO 7, 890-1-890-9
Abstract
The field emission characteristics of patterned carbon nanotubes (CNTs) the average diameter of which is 16 nm cathodes on substrates with different surface treatments were investigated. The surface treatments of the substrate were performed by nickel electroless plating and palladium coating, which is an activation procedure of electroless plating. CNTs were patterned on the surface-treated substrate with radius of 200 lm through conventional photolithography process. Two deposition methods, electrophoresis deposition and spray deposition, were used to investigate the effects of deposition methods on field emission characteristics of the cathodes. It was revealed that the two deposition methods showed similar turn-on field trends, which means that the different surface morphologies of the substrates have more influence on the field emission characteristics than the different deposition methods performed in this study. Through the surface treatments, the roughness of the surface increased and cathodes with a high roughness factor showed better field emission characteristics compared to non-treated ones.
URI
http://pubs.kist.re.kr/handle/201004/45675
ISSN
13880764
Appears in Collections:
KIST Publication > Article
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