5 years ago

Strong Exciton–Photon Coupling in a Nanographene Filled Microcavity

Strong Exciton–Photon Coupling in a Nanographene Filled Microcavity
David M. Coles, Jason M. Smith, Akimitsu Narita, Klaus Müllen, Qiang Chen, Lucas C. Flatten, David G. Lidzey
Dibenzo[hi,st]ovalene (DBOV)—a quasi-zero-dimensional “nanographene”—displays strong, narrow, and well-defined optical-absorption transitions at room temperature. On placing a DBOV-doped polymer film into an optical microcavity, we demonstrate strong coupling of the 0 → 0′ electronic transition to a confined cavity mode, with a coupling energy of 126 meV. Photoluminescence measurements indicate that the polariton population is distributed at energies approximately coincident with the emission of the DBOV, indicating a polariton population via an optical pumping mechanism.

Publisher URL: http://dx.doi.org/10.1021/acs.nanolett.7b02211

DOI: 10.1021/acs.nanolett.7b02211

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