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Issue 43, 2015
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Below-gap excitation of semiconducting single-wall carbon nanotubes

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Abstract

We investigate the optoelectronic properties of the semiconducting (6,5) species of single-walled carbon nanotubes by measuring ultrafast transient transmission changes with 20 fs time resolution. We demonstrate that photons with energy below the lowest exciton resonance efficiently lead to linear excitation of electronic states. This finding challenges the established picture of a vanishing optical absorption below the fundamental excitonic resonance. Our result points towards below-gap electronic states as an intrinsic property of semiconducting nanotubes.

Graphical abstract: Below-gap excitation of semiconducting single-wall carbon nanotubes

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Publication details

The article was received on 03 Aug 2015, accepted on 13 Oct 2015 and first published on 15 Oct 2015


Article type: Paper
DOI: 10.1039/C5NR05218A
Author version available: Download Author version (PDF)
Citation: Nanoscale, 2015,7, 18337-18342
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    Below-gap excitation of semiconducting single-wall carbon nanotubes

    G. Soavi, A. Grupp, A. Budweg, F. Scotognella, T. Hefner, T. Hertel, G. Lanzani, A. Leitenstorfer, G. Cerullo and D. Brida, Nanoscale, 2015, 7, 18337
    DOI: 10.1039/C5NR05218A

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