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Single photon emission from graphene quantum dots at room temperature

Author

Listed:
  • Shen Zhao

    (Université Paris-Saclay)

  • Julien Lavie

    (Université Paris-Saclay)

  • Loïc Rondin

    (Université Paris-Saclay)

  • Lucile Orcin-Chaix

    (Université Paris-Saclay
    Université Paris-Saclay)

  • Carole Diederichs

    (PSL University)

  • Philippe Roussignol

    (PSL University)

  • Yannick Chassagneux

    (PSL University)

  • Christophe Voisin

    (PSL University)

  • Klaus Müllen

    (Max Planck Institute for Polymer Research)

  • Akimitsu Narita

    (Max Planck Institute for Polymer Research)

  • Stéphane Campidelli

    (Université Paris-Saclay)

  • Jean-Sébastien Lauret

    (Université Paris-Saclay)

Abstract

Graphene being a zero-gap material, considerable efforts have been made to develop semiconductors whose structure is compatible with its hexagonal lattice. Size reduction is a promising way to achieve this objective. The reduction of both dimensions of graphene leads to graphene quantum dots. Here, we report on a single-emitter study that directly addresses the intrinsic emission properties of graphene quantum dots. In particular, we show that they are efficient and stable single-photon emitters at room temperature and that their emission wavelength can be modified through the functionalization of their edges. Finally, the investigation of the intersystem crossing shows that the short triplet lifetime and the low crossing yield are in agreement with the high brightness of these quantum emitters. These results represent a step-forward in performing chemistry engineering for the design of quantum emitters.

Suggested Citation

  • Shen Zhao & Julien Lavie & Loïc Rondin & Lucile Orcin-Chaix & Carole Diederichs & Philippe Roussignol & Yannick Chassagneux & Christophe Voisin & Klaus Müllen & Akimitsu Narita & Stéphane Campidelli &, 2018. "Single photon emission from graphene quantum dots at room temperature," Nature Communications, Nature, vol. 9(1), pages 1-5, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-05888-w
    DOI: 10.1038/s41467-018-05888-w
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    Cited by:

    1. Daniel Medina-Lopez & Thomas Liu & Silvio Osella & Hugo Levy-Falk & Nicolas Rolland & Christine Elias & Gaspard Huber & Pranav Ticku & Loïc Rondin & Bruno Jousselme & David Beljonne & Jean-Sébastien L, 2023. "Interplay of structure and photophysics of individualized rod-shaped graphene quantum dots with up to 132 sp² carbon atoms," Nature Communications, Nature, vol. 14(1), pages 1-11, December.

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