Influence of optical material properties on strong coupling in organic semiconductor based microcavities

Tropf, Laura and Dietrich, Christof P. and Herbst, Stefanie and Kanibolotsky, Alexander L. and Skabara, Peter J. and Würthner, Frank and Samuel, Ifor D. W. and Gather, Malte C. and Höfling, Sven (2017) Influence of optical material properties on strong coupling in organic semiconductor based microcavities. Applied Physics Letters, 110 (15). 153302. ISSN 0003-6951

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    Abstract

    The optical properties of organic semiconductors are generally characterised by a number of material specific parameters, including absorbance, photoluminescence quantum yield, Stokes shift, and molecular orientation. Here, we study four different organic semiconductors and compare their optical properties to the characteristics of the exciton-polaritons that are formed when these materials are introduced into metal-clad microcavities. We find that the strength of coupling between cavity photons and excitons is clearly correlated with the absorptivity of the material. In addition, we show that anisotropy strongly affects the characteristics of the formed exciton-polaritons.