Electrically tunable organic-inorganic hybrid polaritons with monolayer WS2.

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.

Metadata

Authors/Creators:

Flatten, L.C.
Coles, D.M.
He, Z.
Lidzey, D.G. https://orcid.org/0000-0002-8558-1160
Taylor, R.A.
Warner, J.H.
Smith, J.M.

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Keywords:

Microresonators; Nanophotonics and plasmonics; Optoelectronic devices and components; Polaritons; Two-dimensional materials

Dates: