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Efficient UV luminescence from organic-based Tamm plasmon structures emitting in the strong coupling regime.

Morozov, Konstantin M. and Ivanov, Konstantin A. and Belonovski, Alexey V. and Girshova, Elizaveta I. and Pereira, Daniel De Sa and Menelaou, Christopher and Pander, Piotr Henryk and Franca, Larissa Gomes and Monkman, Andrew P. and Pozina, Galia and Livshits, Daniil A. and Selenin, Nikita V. and Kaliteevski, Mikhail A. (2020) 'Efficient UV luminescence from organic-based Tamm plasmon structures emitting in the strong coupling regime.', Journal of physical chemistry C., 124 (39). pp. 21656-21663.

Abstract

Excitons in organic semiconductors possessing a large oscillator strength demonstrate strong coupling with cavity modes at room temperature. A large Stokes shift in some organic semiconductors enriches and complicates the picture of the emission in strongly coupled systems of organic excitons and light. Here we demonstrate strong coupling of excitons in 4,4-Bis(N-carbazolyl)-1,1-biphenyl (CBP) and Tamm plasmons in the UV band, accompanied by a bright emission from the structure. Reflection measurements demonstrate the pronounced formation of the lower and upper polariton modes with Rabi splitting of the magnitude of 0.3 eV, and the emission peak experiences a substantial red shift with respect to the lower polariton mode. Both radiative and non-radiative decay rates in the Tamm plasmon CBP structure are increased with respect to a bare CBP. Such peculiar behavior is attributed to the simultaneous manifestation of strong coupling and weak coupling of the CBP molecule emitters to the Tamm plasmons.

Item Type:Article
Full text:(AM) Accepted Manuscript
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1021/acs.jpcc.0c05091
Publisher statement:This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of physical chemistry C, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.jpcc.0c05091
Date accepted:No date available
Date deposited:11 September 2020
Date of first online publication:09 September 2020
Date first made open access:09 September 2021

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