Enhanced Electron Field Emission in B-doped Carbon Nanotubes

J. C. Charlier, Mauricio Terrones Maldonado, M. Baxendale, V. Meunier, T. Zacharia, N. L. Rupesinghe, W. K. Hsu, N. Grobert, H. Terrones, G. A.J. Amaratunga

Research output: Contribution to journalArticle

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Abstract

Field emission properties of B-doped carbon nanotubes are investigated from both theoretical and experimental standpoints. Using tight-binding and ab initio calculations, it is observed that B-saturating tip edges of carbon nanotubes induce the presence of large peaks within the local density of states (LDOS) located in an energy region close to the Fermi level (Ef). These localized states suggest a field emission enhancement for the B-doped tubes. In addition, ab initio theoretical results indicate that the work function for B-doped tubes is 1.7 eV lower when compared to pure carbon-terminated nanotubes. Experimentally, it is found that B-doped tubes, which are produced by arc discharge techniques and contain B mainly at the tips, exhibit stable electron field emission at lower turn-on voltages (1.4 V/μm) when compared to pure single- and multiwalled carbon nanotubes (2.8 and 3.0 V/μm, respectively) measured under the same conditions. We strongly believe our results will bring new insights in the fabrication of stable field emission sources.

Original languageEnglish (US)
Pages (from-to)1191-1195
Number of pages5
JournalNano Letters
Volume2
Issue number11
DOIs
StatePublished - Nov 1 2002

Fingerprint

Carbon Nanotubes
Field emission
electron emission
field emission
Carbon nanotubes
carbon nanotubes
Electrons
tubes
Multiwalled carbon nanotubes (MWCN)
arc discharges
Fermi level
Fabrication
fabrication
augmentation
Electric potential
electric potential
energy

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

Charlier, J. C., Terrones Maldonado, M., Baxendale, M., Meunier, V., Zacharia, T., Rupesinghe, N. L., ... Amaratunga, G. A. J. (2002). Enhanced Electron Field Emission in B-doped Carbon Nanotubes. Nano Letters, 2(11), 1191-1195. https://doi.org/10.1021/nl0256457
Charlier, J. C. ; Terrones Maldonado, Mauricio ; Baxendale, M. ; Meunier, V. ; Zacharia, T. ; Rupesinghe, N. L. ; Hsu, W. K. ; Grobert, N. ; Terrones, H. ; Amaratunga, G. A.J. / Enhanced Electron Field Emission in B-doped Carbon Nanotubes. In: Nano Letters. 2002 ; Vol. 2, No. 11. pp. 1191-1195.
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Charlier, JC, Terrones Maldonado, M, Baxendale, M, Meunier, V, Zacharia, T, Rupesinghe, NL, Hsu, WK, Grobert, N, Terrones, H & Amaratunga, GAJ 2002, 'Enhanced Electron Field Emission in B-doped Carbon Nanotubes', Nano Letters, vol. 2, no. 11, pp. 1191-1195. https://doi.org/10.1021/nl0256457

Enhanced Electron Field Emission in B-doped Carbon Nanotubes. / Charlier, J. C.; Terrones Maldonado, Mauricio; Baxendale, M.; Meunier, V.; Zacharia, T.; Rupesinghe, N. L.; Hsu, W. K.; Grobert, N.; Terrones, H.; Amaratunga, G. A.J.

In: Nano Letters, Vol. 2, No. 11, 01.11.2002, p. 1191-1195.

Research output: Contribution to journalArticle

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T1 - Enhanced Electron Field Emission in B-doped Carbon Nanotubes

AU - Charlier, J. C.

AU - Terrones Maldonado, Mauricio

AU - Baxendale, M.

AU - Meunier, V.

AU - Zacharia, T.

AU - Rupesinghe, N. L.

AU - Hsu, W. K.

AU - Grobert, N.

AU - Terrones, H.

AU - Amaratunga, G. A.J.

PY - 2002/11/1

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N2 - Field emission properties of B-doped carbon nanotubes are investigated from both theoretical and experimental standpoints. Using tight-binding and ab initio calculations, it is observed that B-saturating tip edges of carbon nanotubes induce the presence of large peaks within the local density of states (LDOS) located in an energy region close to the Fermi level (Ef). These localized states suggest a field emission enhancement for the B-doped tubes. In addition, ab initio theoretical results indicate that the work function for B-doped tubes is 1.7 eV lower when compared to pure carbon-terminated nanotubes. Experimentally, it is found that B-doped tubes, which are produced by arc discharge techniques and contain B mainly at the tips, exhibit stable electron field emission at lower turn-on voltages (1.4 V/μm) when compared to pure single- and multiwalled carbon nanotubes (2.8 and 3.0 V/μm, respectively) measured under the same conditions. We strongly believe our results will bring new insights in the fabrication of stable field emission sources.

AB - Field emission properties of B-doped carbon nanotubes are investigated from both theoretical and experimental standpoints. Using tight-binding and ab initio calculations, it is observed that B-saturating tip edges of carbon nanotubes induce the presence of large peaks within the local density of states (LDOS) located in an energy region close to the Fermi level (Ef). These localized states suggest a field emission enhancement for the B-doped tubes. In addition, ab initio theoretical results indicate that the work function for B-doped tubes is 1.7 eV lower when compared to pure carbon-terminated nanotubes. Experimentally, it is found that B-doped tubes, which are produced by arc discharge techniques and contain B mainly at the tips, exhibit stable electron field emission at lower turn-on voltages (1.4 V/μm) when compared to pure single- and multiwalled carbon nanotubes (2.8 and 3.0 V/μm, respectively) measured under the same conditions. We strongly believe our results will bring new insights in the fabrication of stable field emission sources.

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Charlier JC, Terrones Maldonado M, Baxendale M, Meunier V, Zacharia T, Rupesinghe NL et al. Enhanced Electron Field Emission in B-doped Carbon Nanotubes. Nano Letters. 2002 Nov 1;2(11):1191-1195. https://doi.org/10.1021/nl0256457