Efficient ultrafast THz modulators based on negative photoconductivity in controllably doped carbon nanotubes

M. G. Burdanova, A. P. Tsapenko, D. A. Satco, R. Kashtiban, C. D.W. Mosley, M. Monti, M. Staniforth, J. Sloan, Y. G. Gladush, A. G. Nasibulin, J. Lloyd-Hughes

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    Abstract

    Large diameter single-walled carbon nanotubes films are shown to have a doping level and THz conductivity that can be readily controlled using adsorption doping or electrostatic gating. The giant negative photoconductivity observed upon optical excitation is due to a rapid reduction in mobile carrier density, synchronously to a lowering of the momentum scattering rate. The large modulation depth and tunable recovery time open prospects for carbon nanotube films in ultrafast and THz devices.

    Original languageEnglish
    Title of host publicationIRMMW-THz 2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves
    PublisherIEEE Computer Society
    ISBN (Electronic)9781538682852
    DOIs
    Publication statusPublished - Sep 2019
    Event44th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019 - Paris, France
    Duration: 1 Sep 20196 Sep 2019

    Publication series

    NameInternational Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
    Volume2019-September
    ISSN (Print)2162-2027
    ISSN (Electronic)2162-2035

    Conference

    Conference44th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019
    Country/TerritoryFrance
    CityParis
    Period1/09/196/09/19

    Fingerprint

    Dive into the research topics of 'Efficient ultrafast THz modulators based on negative photoconductivity in controllably doped carbon nanotubes'. Together they form a unique fingerprint.

    Cite this