Properties of a Tamm-plasmon-based microcavity with metal intracavity layers and an organic active region

The properties of a microcavity structure with metal intracavity layers and an organic active region (based on the low-molecular-weight compound 4,4'-Bis($N$-carbazolyl)-1,1'-biphenyl (CBP)) are analyzed theoretically. The structure under study consists of a CBP layer of a given thickness sandwiched between two silver layers, two thin phase-matching CBP layers ($d_{\mathrm{ph}}$ = 26 nm), and two quarter-wave Bragg reflectors. It is shown that hybrid modes localized in the central layer of the structure can significantly increase the luminescence decay rate of an organic emitter due to the Purcell effect. It is found that the spectral positions of the hybrid modes are shifted because of their interaction with exciton resonance in CBP. This may indicate the emergence of a strong coupling regime.