Field emission from multiwall carbon nanotubes prepared by electrodeposition without the use of a dispersant

Stephen M. Lyth; F. Oyeleye; R. J. Curry; J. Davis; S. R P Silva

doi:10.1116/1.2198855

Field emission from multiwall carbon nanotubes prepared by electrodeposition without the use of a dispersant

Stephen M. Lyth, F. Oyeleye, R. J. Curry, J. Davis, S. R P Silva

Research output: Contribution to journal › Article › peer-review

Abstract

We present a technique of manufacturing multiwall carbon nanotube (MWNT) field emitters by a nickel electrodeposition process, without using a surfactant to disperse the MWNTs in solution. Sonication adequately disperses individual MWNTs throughout the solution and MWNTs can be deposited onto a copper substrate. However, over time there is a reduction of the free MWNT concentration in solution and an associated change in the morphology of the deposit. The initial concentration of MWNTs in solution also plays a crucial role in the morphology of the deposits. The threshold field of electron field emission measurements remained in the order of 20 Vμm regardless of the deposition conditions.

Original language	English
Pages (from-to)	1362-1364
Number of pages	3
Journal	Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures
Volume	24
Issue number	3
DOIs	https://doi.org/10.1116/1.2198855
Publication status	Published - May 2006

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abstract = "We present a technique of manufacturing multiwall carbon nanotube (MWNT) field emitters by a nickel electrodeposition process, without using a surfactant to disperse the MWNTs in solution. Sonication adequately disperses individual MWNTs throughout the solution and MWNTs can be deposited onto a copper substrate. However, over time there is a reduction of the free MWNT concentration in solution and an associated change in the morphology of the deposit. The initial concentration of MWNTs in solution also plays a crucial role in the morphology of the deposits. The threshold field of electron field emission measurements remained in the order of 20 Vμm regardless of the deposition conditions.",

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AU - Davis, J.

AU - Silva, S. R P

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AB - We present a technique of manufacturing multiwall carbon nanotube (MWNT) field emitters by a nickel electrodeposition process, without using a surfactant to disperse the MWNTs in solution. Sonication adequately disperses individual MWNTs throughout the solution and MWNTs can be deposited onto a copper substrate. However, over time there is a reduction of the free MWNT concentration in solution and an associated change in the morphology of the deposit. The initial concentration of MWNTs in solution also plays a crucial role in the morphology of the deposits. The threshold field of electron field emission measurements remained in the order of 20 Vμm regardless of the deposition conditions.

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Field emission from multiwall carbon nanotubes prepared by electrodeposition without the use of a dispersant

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