Growth and field emission properties of small diameter carbon nanotube films

Y. Y. Wang; S. Gupta; J. M. Garguilo; Z. J. Liu; L. C. Qin; R. J. Nemanich

doi:10.1016/j.diamond.2004.10.003

Growth and field emission properties of small diameter carbon nanotube films

Y. Y. Wang, S. Gupta, J. M. Garguilo, Z. J. Liu, L. C. Qin, R. J. Nemanich

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

25 Scopus citations

Abstract

Vertically aligned carbon nanotube films with diameters smaller than 5 nm, high densities up to 10¹²/cm², and lengths of ∼ 5-8 μm were deposited by microwave plasma-assisted chemical vapor deposition. Experiments show that, by continuous reduction in the thickness of the iron film (i.e., ∼0.3-0.5 nm), small diameter carbon nanotubes can be achieved with diameters that ranged from 1-5 nm, and the films are comprised of both single- and double-wall nanotubes. The electron field emission properties of the films were investigated by variable distance field emission and temperature-dependent field electron emission microscopy (T-FEEM). The films showed an emission site density of ∼10⁴/cm² and a threshold field of 2.8 V/μm similar to multiwalled nanotubes (1.9 V/μm). In addition, they also exhibited a temperature dependence of the emission site intensity.

Original language	English (US)
Pages (from-to)	714-718
Number of pages	5
Journal	Diamond and Related Materials
Volume	14
Issue number	3-7
DOIs	https://doi.org/10.1016/j.diamond.2004.10.003
State	Published - Mar 2005
Externally published	Yes

Keywords

Field emission
Growth
MWCVD
Small diameter carbon nanotubes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
General Chemistry
Mechanical Engineering
Materials Chemistry
Electrical and Electronic Engineering

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10.1016/j.diamond.2004.10.003

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title = "Growth and field emission properties of small diameter carbon nanotube films",

abstract = "Vertically aligned carbon nanotube films with diameters smaller than 5 nm, high densities up to 1012/cm2, and lengths of ∼ 5-8 μm were deposited by microwave plasma-assisted chemical vapor deposition. Experiments show that, by continuous reduction in the thickness of the iron film (i.e., ∼0.3-0.5 nm), small diameter carbon nanotubes can be achieved with diameters that ranged from 1-5 nm, and the films are comprised of both single- and double-wall nanotubes. The electron field emission properties of the films were investigated by variable distance field emission and temperature-dependent field electron emission microscopy (T-FEEM). The films showed an emission site density of ∼104/cm2 and a threshold field of 2.8 V/μm similar to multiwalled nanotubes (1.9 V/μm). In addition, they also exhibited a temperature dependence of the emission site intensity.",

keywords = "Field emission, Growth, MWCVD, Small diameter carbon nanotubes",

author = "Wang, {Y. Y.} and S. Gupta and Garguilo, {J. M.} and Liu, {Z. J.} and Qin, {L. C.} and Nemanich, {R. J.}",

note = "Funding Information: We gratefully acknowledge Duke University Free Electron Laser Laboratory where all of the photo and field electron emission microscopy experiments were performed. This research is supported in part by the TEC ONR–MURI and the Department of Energy Center–Argonne National Laboratory Grants. ",

year = "2005",

month = mar,

doi = "10.1016/j.diamond.2004.10.003",

language = "English (US)",

volume = "14",

pages = "714--718",

journal = "Diamond and Related Materials",

issn = "0925-9635",

publisher = "Elsevier BV",

number = "3-7",

}

TY - JOUR

T1 - Growth and field emission properties of small diameter carbon nanotube films

AU - Wang, Y. Y.

AU - Gupta, S.

AU - Garguilo, J. M.

AU - Liu, Z. J.

AU - Qin, L. C.

AU - Nemanich, R. J.

N1 - Funding Information: We gratefully acknowledge Duke University Free Electron Laser Laboratory where all of the photo and field electron emission microscopy experiments were performed. This research is supported in part by the TEC ONR–MURI and the Department of Energy Center–Argonne National Laboratory Grants.

PY - 2005/3

Y1 - 2005/3

N2 - Vertically aligned carbon nanotube films with diameters smaller than 5 nm, high densities up to 1012/cm2, and lengths of ∼ 5-8 μm were deposited by microwave plasma-assisted chemical vapor deposition. Experiments show that, by continuous reduction in the thickness of the iron film (i.e., ∼0.3-0.5 nm), small diameter carbon nanotubes can be achieved with diameters that ranged from 1-5 nm, and the films are comprised of both single- and double-wall nanotubes. The electron field emission properties of the films were investigated by variable distance field emission and temperature-dependent field electron emission microscopy (T-FEEM). The films showed an emission site density of ∼104/cm2 and a threshold field of 2.8 V/μm similar to multiwalled nanotubes (1.9 V/μm). In addition, they also exhibited a temperature dependence of the emission site intensity.

AB - Vertically aligned carbon nanotube films with diameters smaller than 5 nm, high densities up to 1012/cm2, and lengths of ∼ 5-8 μm were deposited by microwave plasma-assisted chemical vapor deposition. Experiments show that, by continuous reduction in the thickness of the iron film (i.e., ∼0.3-0.5 nm), small diameter carbon nanotubes can be achieved with diameters that ranged from 1-5 nm, and the films are comprised of both single- and double-wall nanotubes. The electron field emission properties of the films were investigated by variable distance field emission and temperature-dependent field electron emission microscopy (T-FEEM). The films showed an emission site density of ∼104/cm2 and a threshold field of 2.8 V/μm similar to multiwalled nanotubes (1.9 V/μm). In addition, they also exhibited a temperature dependence of the emission site intensity.

KW - Field emission

KW - Growth

KW - MWCVD

KW - Small diameter carbon nanotubes

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DO - 10.1016/j.diamond.2004.10.003

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JO - Diamond and Related Materials

JF - Diamond and Related Materials

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ER -

Growth and field emission properties of small diameter carbon nanotube films

Abstract

Keywords

ASJC Scopus subject areas

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