• DocumentCode
    3691499
  • Title

    Ultrabroadband terahertz characterization of highly doped ZnO and ITO

  • Author

    Tianwu Wang;Maksim Zalkovskij;Krzysztof Iwaszczuk;Andrei V. Lavrinenko;Gururaj V. Naik;Jongbum Kim;Alexandra Boltasseva;Peter Uhd Jepsen

  • Author_Institution
    DTU Fotonik - Department of Photonics Engineering, Technical University of Denmark, DK-2800 Kongens, Lyngby, Denmark
  • fYear
    2015
  • Firstpage
    1
  • Lastpage
    1
  • Abstract
    Summary form only given. The broadband complex conductivities of transparent conducting oxides (TCO), namely, aluminum-doped zinc oxide (AZO), gallium-doped zinc oxide (GZO) and tin-doped indium oxide (ITO), were investigated by using THz-TDS from 0.5 to 18 THz. The complex conductivities were accurately calculated using a thin film extraction algorithm and analyzed in terms of the Drude conductivity model. We find that a phonon response must be included in the description of the broadband properties of AZO and GZO for an accurate extraction of the scattering time, which is strongly influenced by the zinc oxide phonon resonance tail even in the low frequency part of the spectrum.
  • Keywords
    "Conductivity","Indium tin oxide","Zinc oxide","Phonons","II-VI semiconductor materials","Broadband antennas","Scattering"
  • Publisher
    ieee
  • Conference_Titel
    Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2015 40th International Conference on
  • ISSN
    2162-2027
  • Electronic_ISBN
    2162-2035
  • Type

    conf

  • DOI
    10.1109/IRMMW-THz.2015.7327715
  • Filename
    7327715
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3691499