Electrically tunable organic-inorganic hybrid polaritons with monolayer WS2.

Journal article

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: Flatten, L; Coles, D; He, Z; Lidzey, D; Taylor, R

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: Nature Publishing Group
• Journal: Nature Communications
• Volume: 8
• Pages: 14097
• Publication date: 2017-01-01
• Acceptance date: 2016-11-29
• DOI: 10.1038/ncomms14097
• ISSN: 2041-1723
• Language: English
• Keywords: Journal Article