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Room temperature multi-phonon upconversion photoluminescence in monolayer semiconductor WS2

Author

Listed:
  • J. Jadczak

    (Wroclaw University of Science and Technology)

  • L. Bryja

    (Wroclaw University of Science and Technology)

  • J. Kutrowska-Girzycka

    (Wroclaw University of Science and Technology)

  • P. Kapuściński

    (Wroclaw University of Science and Technology)

  • M. Bieniek

    (University of Ottawa, Ottawa
    Wrocław University of Science and Technology)

  • Y.-S. Huang

    (National Taiwan University of Science and Technology)

  • P. Hawrylak

    (University of Ottawa, Ottawa)

Abstract

Photon upconversion is an anti-Stokes process in which an absorption of a photon leads to a reemission of a photon at an energy higher than the excitation energy. The upconversion photoemission has been already demonstrated in rare earth atoms in glasses, semiconductor quantum wells, nanobelts, carbon nanotubes and atomically thin semiconductors. Here, we demonstrate a room temperature upconversion photoluminescence process in a monolayer semiconductor WS2, with energy gain up to 150 meV. We attribute this process to transitions involving trions and many phonons and free exciton complexes. These results are very promising for energy harvesting, laser refrigeration and optoelectronics at the nanoscale.

Suggested Citation

  • J. Jadczak & L. Bryja & J. Kutrowska-Girzycka & P. Kapuściński & M. Bieniek & Y.-S. Huang & P. Hawrylak, 2019. "Room temperature multi-phonon upconversion photoluminescence in monolayer semiconductor WS2," Nature Communications, Nature, vol. 10(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-018-07994-1
    DOI: 10.1038/s41467-018-07994-1
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    Cited by:

    1. Niclas S. Mueller & Rakesh Arul & Gyeongwon Kang & Ashley P. Saunders & Amalya C. Johnson & Ana Sánchez-Iglesias & Shu Hu & Lukas A. Jakob & Jonathan Bar-David & Bart Nijs & Luis M. Liz-Marzán & Fang , 2023. "Photoluminescence upconversion in monolayer WSe2 activated by plasmonic cavities through resonant excitation of dark excitons," Nature Communications, Nature, vol. 14(1), pages 1-9, December.

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