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Peer-reviewedCC BY 4.0Optical Materials Express

Collective Fluorescence of Graphene Quantum Dots on a surface

  • Hugo Levy-Falk
  • Suman Sarkar
  • Thanh Trung Huynh
  • Daniel Medina-Lopez
  • Lauren Hurley
  • Océane Capelle
  • Muriel Bouttemy
  • Gaëlle Trippé-Allard
  • Stéphane Campidelli
  • Loïc Rondin
  • Elsa Cassette
  • Emmanuelle Deleporte
1 more authors
  • Jean-Sébastien Lauret
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Abstract

This study explores the organization of graphene quantum dots on the surface of monocrystalline halide perovskite. We show that graphene quantum dots tends to aggregate on the surface of perovskite unlike in solution or on other substrates, even at very low concentration of the initial solution that should yield single-molecule samples. Spectral analysis on small clusters shows a back-and-forth dynamical transition between an uncoupled, monomer-like state, and an excimer state. Following this "dance" between states, a drastic one-way increase in fluorescence intensity combined with a shortening of the excited state lifetime has been observed on some clusters. This behavior is related to the emission of a collective state that may be a consequence of the dynamical organization of graphene quantum dots under illumination on the surface of the perovksite.

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Cite

BibTeXRIS
BibTeX
@article{levyfalk2026collective,
  title = {{Collective Fluorescence of Graphene Quantum Dots on a surface}},
  author = {Hugo Levy-Falk and Suman Sarkar and Thanh Trung Huynh and Daniel Medina-Lopez and Lauren Hurley and Océane Capelle and Muriel Bouttemy and Gaëlle Trippé-Allard and Stéphane Campidelli and Loïc Rondin and Elsa Cassette and Emmanuelle Deleporte and Jean-Sébastien Lauret},
  journal = {Optical Materials Express},
  year = {2026},
  month = jul,
  doi = {10.1364/ome.583290},
  url = {https://hal.science/hal-05383590v2},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Collective Fluorescence of Graphene Quantum Dots on a surface
AU  - Hugo Levy-Falk
AU  - Suman Sarkar
AU  - Thanh Trung Huynh
AU  - Daniel Medina-Lopez
AU  - Lauren Hurley
AU  - Océane Capelle
AU  - Muriel Bouttemy
AU  - Gaëlle Trippé-Allard
AU  - Stéphane Campidelli
AU  - Loïc Rondin
AU  - Elsa Cassette
AU  - Emmanuelle Deleporte
AU  - Jean-Sébastien Lauret
PY  - 2026
DA  - 2026/07/01
JO  - Optical Materials Express
DO  - 10.1364/ome.583290
UR  - https://hal.science/hal-05383590v2
AB  - This study explores the organization of graphene quantum dots on the surface of monocrystalline halide perovskite. We show that graphene quantum dots tends to aggregate on the surface of perovskite unlike in solution or on other substrates, even at very low concentration of the initial solution that should yield single-molecule samples. Spectral analysis on small clusters shows a back-and-forth dynamical transition between an uncoupled, monomer-like state, and an excimer state. Following this "dance" between states, a drastic one-way increase in fluorescence intensity combined with a shortening of the excited state lifetime has been observed on some clusters. This behavior is related to the emission of a collective state that may be a consequence of the dynamical organization of graphene quantum dots under illumination on the surface of the perovksite.
SN  - 2159-3930
SN  - 2159-3930
ER  -