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Electrically tunable organic–inorganic hybrid polaritons with monolayer WS2

Author

Listed:
  • Lucas C. Flatten

    (University of Oxford)

  • David M. Coles

    (University of Oxford
    Clarendon Laboratory, University of Oxford)

  • Zhengyu He

    (University of Oxford)

  • David G. Lidzey

    (University of Sheffield)

  • Robert A. Taylor

    (Clarendon Laboratory, University of Oxford)

  • Jamie H. Warner

    (University of Oxford)

  • Jason M. Smith

    (University of Oxford)

Abstract

Exciton-polaritons are quasiparticles consisting of a linear superposition of photonic and excitonic states, offering potential for nonlinear optical devices. The excitonic component of the polariton provides a finite Coulomb scattering cross section, such that the different types of exciton found in organic materials (Frenkel) and inorganic materials (Wannier-Mott) produce polaritons with different interparticle interaction strength. A hybrid polariton state with distinct excitons provides a potential technological route towards in situ control of nonlinear behaviour. Here we demonstrate a device in which hybrid polaritons are displayed at ambient temperatures, the excitonic component of which is part Frenkel and part Wannier-Mott, and in which the dominant exciton type can be switched with an applied voltage. The device consists of an open microcavity containing both organic dye and a monolayer of the transition metal dichalcogenide WS2. Our findings offer a perspective for electrically controlled nonlinear polariton devices at room temperature.

Suggested Citation

  • Lucas C. Flatten & David M. Coles & Zhengyu He & David G. Lidzey & Robert A. Taylor & Jamie H. Warner & Jason M. Smith, 2017. "Electrically tunable organic–inorganic hybrid polaritons with monolayer WS2," Nature Communications, Nature, vol. 8(1), pages 1-5, April.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14097
    DOI: 10.1038/ncomms14097
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