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Nb impurity-bound excitons as quantum emitters in monolayer WS2

Author

Listed:
  • Leyi Loh

    (National University of Singapore
    National University of Singapore)

  • Yi Wei Ho

    (National University of Singapore
    National University of Singapore)

  • Fengyuan Xuan

    (National University of Singapore)

  • Andrés Granados Águila

    (National University of Singapore)

  • Yuan Chen

    (National University of Singapore)

  • See Yoong Wong

    (La Trobe University Melbourne)

  • Jingda Zhang

    (National University of Singapore)

  • Zhe Wang

    (National University of Singapore)

  • Kenji Watanabe

    (National Institute for Materials Science)

  • Takashi Taniguchi

    (National Institute for Materials Science)

  • Paul J. Pigram

    (La Trobe University Melbourne)

  • Michel Bosman

    (National University of Singapore)

  • Su Ying Quek

    (National University of Singapore
    National University of Singapore
    National University of Singapore
    National University of Singapore)

  • Maciej Koperski

    (National University of Singapore
    National University of Singapore)

  • Goki Eda

    (National University of Singapore
    National University of Singapore
    National University of Singapore)

Abstract

Point defects in crystalline solids behave as optically addressable individual quantum systems when present in sufficiently low concentrations. In two-dimensional (2D) semiconductors, such quantum defects hold potential as versatile single photon sources. Here, we report the synthesis and optical properties of Nb-doped monolayer WS2 in the dilute limit where the average spacing between individual dopants exceeds the optical diffraction limit, allowing the emission spectrum to be studied at the single-dopant level. We show that these individual dopants exhibit common features of quantum emitters, including narrow emission lines (with linewidths

Suggested Citation

  • Leyi Loh & Yi Wei Ho & Fengyuan Xuan & Andrés Granados Águila & Yuan Chen & See Yoong Wong & Jingda Zhang & Zhe Wang & Kenji Watanabe & Takashi Taniguchi & Paul J. Pigram & Michel Bosman & Su Ying Que, 2024. "Nb impurity-bound excitons as quantum emitters in monolayer WS2," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-54360-5
    DOI: 10.1038/s41467-024-54360-5
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