Diameter grouping in bulk samples of single-walled carbon nanotubes from optical absorption spectroscopy

Jost, Oliver; Gorbunov, A.; Pompe, W.; Pichler, Thomas; Friedlein, Rainer; Knupfer, M.; Reibold, M.; Bauer, Hans-Dieter; Dunsch, Lothar; Golden, M. S.; Fink, J.

doi:10.1063/1.124969

Cited by 197 publications

(183 citation statements)

References 9 publications

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“…11 Boron doping with an averaged substitution level of ϳ15 at.% was achieved by a substitution reaction in an NH 3 atmosphere. 12 Transmission electron microscopy (TEM) characterization after the substitution reaction revealed the presence of high-purity nanotube bundles with a homogeneous diameter distribution.…”

Section: Resultsmentioning

confidence: 99%

Formation and electronic properties ofBC3single-wall nanotubes upon boron substitution of carbon nanotubes

et al. 2004

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We report a detailed experimental and theoretical study on the electronic and optical properties of highly boron-substituted (up to 15 at.%) single-wall carbon nanotubes. Core-level electron energy-loss spectroscopy reveals that the boron incorporates into the lattice structure of the tubes, transferring ϳ1 / 2 hole per boron atom into the carbon derived unoccupied density of states. The charge transfer and the calculated Fermi-energy shift in the doped nanotubes evidence that a simple rigid-band model can be ruled out and that additional effects such as charge localization and doping induced band-structure changes play an important role at this high doping levels. In optical absorption a new peak appears at 0.4 eV which is independent of the doping level. Compared to the results from a series of ab initio calculations our results support the selective doping of semiconducting nanotubes and the formation of BC 3 nanotubes instead of a homogeneous random boron substitution.

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Section: Resultsmentioning

confidence: 99%

Formation and electronic properties ofBC3single-wall nanotubes upon boron substitution of carbon nanotubes

et al. 2004

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“…14,15,26 From both the EELS analysis and the optical absorption data, several distinct spectral features are observed for energies below 3 eV. These features have been related to the abovementioned interband transitions between the van Hove singularities in the electronic DOS of the semiconducting and metallic SWCNT's.…”

Section: Introductionmentioning

confidence: 92%

“…Several different methods have been applied to gain this information. The methods comprise local probes such as transmission-electron microscopy ͑TEM͒, 10 scanning-tunneling microscopy combined with tunneling spectroscopy, 11 and bulk sensitive probes, such as Raman scattering, 12,13 optical-absorption spectroscopy, 14,15 electron diffraction, 16,17 x-ray diffraction ͑XRD͒, 10 and neutron scattering. 18,19 In the following, we briefly compare these methods.…”

Section: Introductionmentioning

confidence: 99%

Detailed analysis of the mean diameter and diameter distribution of single-wall carbon nanotubes from their optical response

et al. 2002

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Detailed analysis of the mean diameter and diameter distribution of single-wall carbonnanotubes from their optical response Liu, X.; Pichler, T.; Knupfer, M.; Golden, M.S.; Fink, J.; Kataura, H.; Achiba, Y. Published in:Physical Review B Link to publication Citation for published version (APA):Liu, X., Pichler, T., Knupfer, M., Golden, M. S., Fink, J., Kataura, H., & Achiba, Y. (2002). Detailed analysis of the mean diameter and diameter distribution of single-wall carbonnanotubes from their optical response. Physical Review B, 66, 045411. General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. We report a detailed analysis of the optical properties of single-wall carbon nanotubes ͑SWCNT's͒ with different mean diameters as produced by laser ablation. From a combined study of optical absorption, highresolution electron energy-loss spectroscopy in transmission, and tight-binding calculations we were able to accurately determine the mean diameter and diameter distribution in bulk SWCNT samples. In general, the absorption response can be well described assuming a Gaussian distribution of nanotube diameters and the predicted inverse proportionality between the nanotube diameter and the energy of the absorption features. A detailed simulation enabled not only a determination of the mean diameter of the nanotubes, but also gives insight into the chirality distribution of the nanotubes. The best agreement between the simulation and experiment is observed when only nanotubes within 15°of the armchair axis are considered. The mean diameters and diameter distributions from the optical simulations are in very good agreement with the values derived from other bulk sensitive methods such as electron diffraction, x-ray diffraction, and Raman scattering.

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“…Our sample consists of SWNTs synthetized by laser ablation of a doped graphite target and purified by ultrasonic and chemical treatment [21,22]. The linear absorption spectrum is composed of inhomogeneously broadened lines centered at 0.75 and 1.3 eV corresponding to the S 11 and S 22 excitonic transitions in semiconducting SWNTs, respectively [23].…”

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Phonon-induced dephasing in single-wall carbon nanotubes

et al. 2011

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International audienceWe report on original nonlinear spectral hole-burning experiments in ensembles of single-wall carbon nanotubes. We have measured the temperature dependence of the excitonic homogeneous linewidth from 5 K up to room temperature. We show that the phonon-induced broadening in the weak coupling regime predominantly consists in pure dephasing. We present theoretical calculations of the exciton scattering rate due to phonon absorption within a one-dimensional framework for both excitons and phonons. We obtain a fair agreement with our experimental data and we discuss the specific properties of the exciton-phonon coupling in single-wall carbon nanotubes

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Diameter grouping in bulk samples of single-walled carbon nanotubes from optical absorption spectroscopy

Cited by 197 publications

References 9 publications

Formation and electronic properties ofBC3single-wall nanotubes upon boron substitution of carbon nanotubes

Formation and electronic properties ofBC3single-wall nanotubes upon boron substitution of carbon nanotubes

Detailed analysis of the mean diameter and diameter distribution of single-wall carbon nanotubes from their optical response

Phonon-induced dephasing in single-wall carbon nanotubes

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