Bose-Einstein Condensation of Polaritons in Organic Semiconducting Microcavities

Abstract

Anti-crossing of organic exciton and photon modes and a room temperature Rabi splitting that is an order of magnitude larger than the highest values reported for inorganic semiconductor quantum wells are observed in organic microcavity embedded quantum wells. Also, this larger splitting due to the large oscillator strength of organic excitons is easily achieved with many organic systems and gives reasonable hope for reaching the strong coupling regime. However, dynamic condensation clearly involving stimulated emission of the k ≈ 0 lower polaritons is expected at relatively low exciton density, due to the very small polariton mass. We report on the theoretical study of non-linear emission of organic microcavity polaritons. In the ‘Boser’ model at low density, we include the acoustic phonon-assisted relaxation and polariton–polariton scattering stimulated by the quasi-bosonic polariton final state population.