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Precise Control of Color Center Formation in a Single Carbon Nanotube Using Microspectroscopy

Research Project

Project/Area Number 20K15112
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 28010:Nanometer-scale chemistry-related
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

Kozawa Daichi  国立研究開発法人理化学研究所, 光量子工学研究センター, 基礎科学特別研究員 (30756060)

Project Period (FY) 2020-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsカーボンナノチューブ / 単一光子源 / 発光中心 / 化学反応 / 励起子 / 低次元ナノ物質 / 量子光源 / 欠陥制御 / 光化学反応 / 量子 / 発光顕微分光 / ナノテクノロジー / 化学工学
Outline of Research at the Start

単層カーボンナノチューブは室温、通信波長帯域で単一光子発生をすることから、量子情報技術への応用が期待されている。これまでに、ナノチューブに官能基を化学修飾することで発光中心、つまり発光性の格子欠陥を導入し、単一光子源となることが明らかにされてきた。ごく最近、我々は溶液中のナノチューブだけではなく、Si溝上の架橋ナノチューブにも発光中心を形成させ、発光中心に起因する発光を観測することに成功した。そこで本研究では、これらの技術をさらに微小極限へとすすめるために、単一ナノチューブの発光中心形成の位置をサブミクロン単位で制御することを目的とする。

Outline of Final Research Achievements

We first synthesized air-suspended carbon nanotubes over trenches fabricated on a Si substrate and then introduced of color centers. A method for chemical modification of the carbon nanotubes was demonstrated by a vapor-phase photochemical reaction using iodobenzene. The introduction of color centers was confirmed by comparing the photoluminescence spectra of the same nanotubes before and after the reaction. After the reaction, new peaks indicating emission from color centers were observed. Furthermore, similar photoluminescence spectroscopy measurements were performed on more than 2000 carbon nanotubes to clarify the reactivity and emission properties of each nanotube diameter.

Academic Significance and Societal Importance of the Research Achievements

本研究では、気相化学反応法を用いて架橋カーボンナノチューブに量子欠陥を導入できることを実証した。架橋カーボンナノチューブへの気相化学反応が可能になったことで、反応分子数の精密なコントロールが実現し、単一分子レベルで量子欠陥を導入できる技術への道が開けた。本手法は、カーボンナノチューブの長さ1μmあたり1~2個という、非常に低密度の欠陥が導入できる点で重要である。今後さらに反応条件を最適化し、カーボンナノチューブ1本に対して量子欠陥が1個だけ存在する構造が作製できれば、単一光子源としての性能向上につながると期待できる。

Report

(3 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • Research Products

    (13 results)

All 2022 2021 2020 Other

All Int'l Joint Research (2 results) Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (8 results) (of which Int'l Joint Research: 2 results) Remarks (1 results)

  • [Int'l Joint Research] メリーランド大学(米国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] メリーランド大学(米国)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Formation of Organic Color Centers in Air-Suspended Carbon Nanotubes Using Vapor-Phase Reaction2022

    • Author(s)
      Daichi Kozawa, Xiaojian Wu, Akihiro Ishii, Jacob Fortner, Keigo Otsuka, Rong Xiang, Taiki Inoue, Shigeo Maruyama, YuHuang Wang, and Yuichiro K. Kato
    • Journal Title

      Nature Communications

      Volume: - Issue: 1 Pages: 2814-2814

    • DOI

      10.1038/s41467-022-30508-z

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Quantum Emission Assisted by Energy Landscape Modification in Pentacene-Decorated Carbon Nanotubes2021

    • Author(s)
      Li Zhen、Otsuka Keigo、Yamashita Daiki、Kozawa Daichi、Kato Yuichiro K.
    • Journal Title

      ACS Photonics

      Volume: 8 Issue: 8 Pages: 2367-2374

    • DOI

      10.1021/acsphotonics.1c00539

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Formation of Organic Color Centers in Air-Suspended Carbon Nanotubes Using Vapor-Phase Reaction2022

    • Author(s)
      Daichi Kozawa, Xiaojian Wu, Akihiro Ishii, Jacob Fortner, Keigo Otsuka, Rong Xiang, Taiki Inoue, Shigeo Maruyama, YuHuang Wang, Yuichiro K. Kato
    • Organizer
      理研シンポジウム:第9回「光量子工学研究」
    • Related Report
      2021 Annual Research Report
  • [Presentation] Creation of Organic Color Centers in Air-Suspended Carbon Nanotubes Using Vapor-Phase Reaction2021

    • Author(s)
      D. Kozawa, X. Wu, A. Ishii, J. Fortner, K. Otsuka, R. Xiang, T. Inoue, S. Maruyama, Y. Wang, Y. K. Kato
    • Organizer
      International Conference on the Science and Application of Nanotubes and Low-Dimensional Materials (NT21)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Diameter-dependent Photoluminescence Properties in Color Centers of Air-Suspended Single-Walled Carbon Nanotubes2021

    • Author(s)
      [1]D. Kozawa, X. Wu, A. Ishii, J. Fortner, K. Otsuka, R. Xiang, T. Inoue, S. Maruyama, Y. H. Wang, Y. K. Kato
    • Organizer
      March Meeting of the American Physical Society
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Analytical Estimation of Color Center Density Formed in Air-Suspended Single-Walled Carbon Nanotubes2021

    • Author(s)
      [1]D. Kozawa, X. Wu, A. Ishii, J. Fortner, K. Otsuka, R. Xiang, T. Inoue, S. Maruyama, Y. H. Wang, Y. K. Kato
    • Organizer
      日本物理学会第76回年次大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Analytical Estimation of Quantum Emitters Formed in Air-Suspended Single-Walled Carbon Nanotubes2021

    • Author(s)
      [2]D. Kozawa, X. Wu, A. Ishii, J. Fortner, K. Otsuka, R. Xiang, T. Inoue, S. Maruyama, Y. H. Wang, Y. K. Kato
    • Organizer
      The 60th Fullerenes-Nanotubes-Graphene General Symposium
    • Related Report
      2020 Research-status Report
  • [Presentation] Diameter-dependent photoluminescence properties in color centers of air-suspended single-walled carbon nanotubes2020

    • Author(s)
      [3]D. Kozawa, X. Wu, A. Ishii, J. Fortner, K. Otsuka, R. Xiang, T. Inoue, S. Maruyama, Y. H. Wang, Y. K. Kato
    • Organizer
      The 59th Fullerenes-Nanotubes-Graphene General Symposium
    • Related Report
      2020 Research-status Report
  • [Presentation] Formation of quantum emitters in air-suspended carbon nanotubes using vapor-phase reaction2020

    • Author(s)
      [4]D. Kozawa, X. Wu, A. Ishii, J. Fortner, K. Otsuka, R. Xiang, T. Inoue, S. Maruyama, Y. H. Wang, Y. K. Kato
    • Organizer
      第81回応用物理学会秋季学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] Diameter-dependent photoluminescence properties in color centers of air-suspended single-walled carbon nanotubes2020

    • Author(s)
      [5]D. Kozawa, X. Wu, A. Ishii, J. Fortner, K. Otsuka, R. Xiang, T. Inoue, S. Maruyama, Y. H. Wang, Y. K. Kato
    • Organizer
      日本物理学会2020年秋季大会(物性)
    • Related Report
      2020 Research-status Report
  • [Remarks] 架橋カーボンナノチューブにおける気相化学反応を用いた量子欠陥の導入

    • URL

      http://katogroup.riken.jp/ja/dopedsuspendedtubes.html

    • Related Report
      2021 Annual Research Report

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Published: 2020-04-28   Modified: 2023-01-30  

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