title: 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.
authors.affiliation: Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, UK.
authors.forename: Lucas C
authors.initials: LC
authors.lastname: Flatten
authors.affiliation: Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, UK.|Department of Physics, Clarendon Laboratory, University of Oxford, Oxford OX1 3PU, UK.
authors.forename: David M
authors.initials: DM
authors.lastname: Coles
authors.affiliation: Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, UK.
authors.forename: Zhengyu
authors.initials: Z
authors.lastname: He
authors.affiliation: Department of Physics &Astronomy, University of Sheffield, Sheffield S3 7RH, UK.
authors.forename: David G
authors.initials: DG
authors.lastname: Lidzey
authors.affiliation: Department of Physics, Clarendon Laboratory, University of Oxford, Oxford OX1 3PU, UK.
authors.forename: Robert A
authors.initials: RA
authors.lastname: Taylor
authors.affiliation: Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, UK.
authors.forename: Jamie H
authors.initials: JH
authors.lastname: Warner
authors.affiliation: Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, UK.
authors.forename: Jason M
authors.initials: JM
authors.lastname: Smith