Cold exciton electroluminescence from air-suspended carbon nanotube split-gate devices

DOI DOI PDF 7 Citations 35 References Open Access
  • N. Higashide
    The University of Tokyo 1 Department of Electrical Engineering, , Tokyo 113-8656, Japan
  • M. Yoshida
    RIKEN 2 Nanoscale Quantum Photonics Laboratory, , Saitama 351-0198, Japan
  • T. Uda
    RIKEN 2 Nanoscale Quantum Photonics Laboratory, , Saitama 351-0198, Japan
  • A. Ishii
    The University of Tokyo 1 Department of Electrical Engineering, , Tokyo 113-8656, Japan
  • Y. K. Kato
    RIKEN 2 Nanoscale Quantum Photonics Laboratory, , Saitama 351-0198, Japan

Description

<jats:p>Electroluminescence from individual carbon nanotubes within split-gate devices is investigated. By characterizing the air-suspended nanotubes with photoluminescence spectroscopy, chirality is identified and electroluminescence peaks are assigned. We observe electroluminescence linewidths comparable to photoluminescence, indicating negligible heating and state-mixing effects. Split-gate and bias voltage dependences are consistent with emission from an electrostatically formed pn-junction.</jats:p>

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