Strong Optical Coupling in Organic Semiconductor Microcavities

Abstract

Publisher Summary This chapter discusses strong coupling in microcavities using organic semiconductors. The chapter discusses the optical properties of microcavities, both in the weak- and strong-coupling regimes. The chapter describes the requirements that a semiconductor material must possess to undergo strong coupling in a microcavity and discusses the optical properties of a number of organic materials that have been used to achieve strong coupling. The chapter describes the experimental methods that are used to study such structures and presents some observations made via white-light-reflectivity measurements. The photon emission from organic strongly coupled microcavities is explained for both nonresonant and resonant excitations. A microcavity is a planar Fabry–Perot cavity in which two mirrors are placed at either side of a dielectric medium. The presence of the two mirrors quantizes the cavity photon modes so that only the photons having a certain energy and in-plane momentum can be supported. The chapter presents results on microcavities containing two different organic semiconductors and explains the way such structures support new types of hybridized and delocalized optical excitations. The possible future developments and applications that may emerge from this exciting research area are discussed in the chapter.