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Formation of organic color centers in air-suspended carbon nanotubes using vapor-phase reaction

Author

Listed:
  • Daichi Kozawa

    (RIKEN Center for Advanced Photonics)

  • Xiaojian Wu

    (University of Maryland)

  • Akihiro Ishii

    (RIKEN Center for Advanced Photonics
    RIKEN Cluster for Pioneering Research)

  • Jacob Fortner

    (University of Maryland)

  • Keigo Otsuka

    (RIKEN Cluster for Pioneering Research)

  • Rong Xiang

    (Zhejiang University
    The University of Tokyo)

  • Taiki Inoue

    (The University of Tokyo
    Osaka University)

  • Shigeo Maruyama

    (The University of Tokyo)

  • YuHuang Wang

    (University of Maryland
    University of Maryland)

  • Yuichiro K. Kato

    (RIKEN Center for Advanced Photonics
    RIKEN Cluster for Pioneering Research)

Abstract

Organic color centers in single-walled carbon nanotubes have demonstrated exceptional ability to generate single photons at room temperature in the telecom range. Combining the color centers with pristine air-suspended nanotubes would be desirable for improved performance, but all current synthetic methods occur in solution which makes them incompatible. Here we demonstrate the formation of color centers in air-suspended nanotubes using a vapor-phase reaction. Functionalization is directly verified by photoluminescence spectroscopy, with unambiguous statistics from more than a few thousand individual nanotubes. The color centers show strong diameter-dependent emission, which can be explained with a model for chemical reactivity considering strain along the tube curvature. We also estimate the defect density by comparing the experiments with simulations based on a one-dimensional exciton diffusion equation. Our results highlight the influence of the nanotube structure on vapor-phase reactivity and emission properties, providing guidelines for the development of high-performance near-infrared quantum light sources.

Suggested Citation

  • Daichi Kozawa & Xiaojian Wu & Akihiro Ishii & Jacob Fortner & Keigo Otsuka & Rong Xiang & Taiki Inoue & Shigeo Maruyama & YuHuang Wang & Yuichiro K. Kato, 2022. "Formation of organic color centers in air-suspended carbon nanotubes using vapor-phase reaction," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-30508-z
    DOI: 10.1038/s41467-022-30508-z
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    Cited by:

    1. N. Fang & Y. R. Chang & S. Fujii & D. Yamashita & M. Maruyama & Y. Gao & C. F. Fong & D. Kozawa & K. Otsuka & K. Nagashio & S. Okada & Y. K. Kato, 2024. "Room-temperature quantum emission from interface excitons in mixed-dimensional heterostructures," Nature Communications, Nature, vol. 15(1), pages 1-8, December.

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