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.
@article{arxiv.1608.05274,
title = {Electrically tunable organic-inorganic hybrid polaritons with monolayer WS2},
author = {Lucas C. Flatten and David M. Coles and Zhengyu He and David. G. Lidzey and Robert A. Taylor and Jamie H. Warner and Jason M. Smith},
journal= {arXiv preprint arXiv:1608.05274},
year = {2017}
}