Strong light–matter interaction in organic microcavity polaritons: essential criteria, design principles and typical configurationsDileep Kottilil, Anu Babusenan, Cheriyanath Vijayan and Wei JiEur. Phys. J. Spec. Top., 230 23 (2021) 4091-4097DOI: https://doi.org/10.1140/epjs/s11734-021-00224-8