Phonon-assisted electroluminescence from metallic carbon nanotubes and graphene

S. Essig; C. W. Marquardt; A. Vijayaraghavan; M. Ganzhorn; S. Dehm; F. Hennrich; F. Ou; A. A. Green; C. Sciascia; F. Bonaccorso; K. P. Bohnen; H. V. Löhneysen; M. M. Kappes; P. M. Ajayan; M. C. Hersam; A. C. Ferrari; R. Krupke

doi:10.1021/nl9039795

Phonon-assisted electroluminescence from metallic carbon nanotubes and graphene

S. Essig, C. W. Marquardt, A. Vijayaraghavan, M. Ganzhorn, S. Dehm, F. Hennrich, F. Ou, A. A. Green, C. Sciascia, F. Bonaccorso, K. P. Bohnen, H. V. Löhneysen, M. M. Kappes, P. M. Ajayan, M. C. Hersam, A. C. Ferrari, R. Krupke

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

76 Scopus citations

Abstract

We report on light emission from biased metallic single-wall carbon nanotube (SWNT), multiwall carbon nanotube (MWNT) and few-layer graphene (FLG) devices. SWNT devices were assembled from tubes with different diameters in the range 0.7-1.5 nm. They emit light in the visible spectrum with peaks at 1.4 and 1.8 eV. Similar peaks are observed for MWNT and FLG devices. We propose that this light emission is due to phonon-assisted radiative decay from populated φ* band states at the M point to the Fermi level at the K point. Since for most carbon nanotubes as well as for graphene the energy of unoccupied states at the M point is close to 1.6 eV, the observation of two emission peaks at ∼1.6 ∼0.2 eV could indicate radiative decay under emission or absorption of optical phonons, respectively.

Original language	English (US)
Pages (from-to)	1589-1594
Number of pages	6
Journal	Nano Letters
Volume	10
Issue number	5
DOIs	https://doi.org/10.1021/nl9039795
State	Published - May 12 2010
Externally published	Yes

Keywords

Carbon nanotubes
Electroluminescence
Grapheme
Phonons

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

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10.1021/nl9039795

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Essig, S., Marquardt, C. W., Vijayaraghavan, A., Ganzhorn, M., Dehm, S., Hennrich, F., Ou, F., Green, A. A., Sciascia, C., Bonaccorso, F., Bohnen, K. P., Löhneysen, H. V., Kappes, M. M., Ajayan, P. M., Hersam, M. C., Ferrari, A. C., & Krupke, R. (2010). Phonon-assisted electroluminescence from metallic carbon nanotubes and graphene. Nano Letters, 10(5), 1589-1594. https://doi.org/10.1021/nl9039795

Essig, S, Marquardt, CW, Vijayaraghavan, A, Ganzhorn, M, Dehm, S, Hennrich, F, Ou, F, Green, AA, Sciascia, C, Bonaccorso, F, Bohnen, KP, Löhneysen, HV, Kappes, MM, Ajayan, PM, Hersam, MC, Ferrari, AC & Krupke, R 2010, 'Phonon-assisted electroluminescence from metallic carbon nanotubes and graphene', Nano Letters, vol. 10, no. 5, pp. 1589-1594. https://doi.org/10.1021/nl9039795

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title = "Phonon-assisted electroluminescence from metallic carbon nanotubes and graphene",

abstract = "We report on light emission from biased metallic single-wall carbon nanotube (SWNT), multiwall carbon nanotube (MWNT) and few-layer graphene (FLG) devices. SWNT devices were assembled from tubes with different diameters in the range 0.7-1.5 nm. They emit light in the visible spectrum with peaks at 1.4 and 1.8 eV. Similar peaks are observed for MWNT and FLG devices. We propose that this light emission is due to phonon-assisted radiative decay from populated φ* band states at the M point to the Fermi level at the K point. Since for most carbon nanotubes as well as for graphene the energy of unoccupied states at the M point is close to 1.6 eV, the observation of two emission peaks at ∼1.6 ∼0.2 eV could indicate radiative decay under emission or absorption of optical phonons, respectively.",

keywords = "Carbon nanotubes, Electroluminescence, Grapheme, Phonons",

author = "S. Essig and Marquardt, {C. W.} and A. Vijayaraghavan and M. Ganzhorn and S. Dehm and F. Hennrich and F. Ou and Green, {A. A.} and C. Sciascia and F. Bonaccorso and Bohnen, {K. P.} and L{\"o}hneysen, {H. V.} and Kappes, {M. M.} and Ajayan, {P. M.} and Hersam, {M. C.} and Ferrari, {A. C.} and R. Krupke",

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AU - Essig, S.

AU - Marquardt, C. W.

AU - Vijayaraghavan, A.

AU - Ganzhorn, M.

AU - Dehm, S.

AU - Hennrich, F.

AU - Ou, F.

AU - Green, A. A.

AU - Sciascia, C.

AU - Bonaccorso, F.

AU - Bohnen, K. P.

AU - Löhneysen, H. V.

AU - Kappes, M. M.

AU - Ajayan, P. M.

AU - Hersam, M. C.

AU - Ferrari, A. C.

AU - Krupke, R.

PY - 2010/5/12

Y1 - 2010/5/12

N2 - We report on light emission from biased metallic single-wall carbon nanotube (SWNT), multiwall carbon nanotube (MWNT) and few-layer graphene (FLG) devices. SWNT devices were assembled from tubes with different diameters in the range 0.7-1.5 nm. They emit light in the visible spectrum with peaks at 1.4 and 1.8 eV. Similar peaks are observed for MWNT and FLG devices. We propose that this light emission is due to phonon-assisted radiative decay from populated φ* band states at the M point to the Fermi level at the K point. Since for most carbon nanotubes as well as for graphene the energy of unoccupied states at the M point is close to 1.6 eV, the observation of two emission peaks at ∼1.6 ∼0.2 eV could indicate radiative decay under emission or absorption of optical phonons, respectively.

AB - We report on light emission from biased metallic single-wall carbon nanotube (SWNT), multiwall carbon nanotube (MWNT) and few-layer graphene (FLG) devices. SWNT devices were assembled from tubes with different diameters in the range 0.7-1.5 nm. They emit light in the visible spectrum with peaks at 1.4 and 1.8 eV. Similar peaks are observed for MWNT and FLG devices. We propose that this light emission is due to phonon-assisted radiative decay from populated φ* band states at the M point to the Fermi level at the K point. Since for most carbon nanotubes as well as for graphene the energy of unoccupied states at the M point is close to 1.6 eV, the observation of two emission peaks at ∼1.6 ∼0.2 eV could indicate radiative decay under emission or absorption of optical phonons, respectively.

KW - Carbon nanotubes

KW - Electroluminescence

KW - Grapheme

KW - Phonons

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Phonon-assisted electroluminescence from metallic carbon nanotubes and graphene

Abstract

Keywords

ASJC Scopus subject areas

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