SAMOP 2023 – scientific programme

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MO: Fachverband Molekülphysik

MO 2: Photochemistry

MO 2.8: Talk

Monday, March 6, 2023, 12:45–13:00, F142

Suppressing non-radiative decay of photochromic organic molecular systems in the strong coupling regime — •Markus Kowalewski and Rafael C. Cuoto — Stockholm University, Stockholm, Sweden

Organic solar cells and related optoelectronic applications rely on molecules with long-lived electronic states. Non-radiative decay channels, which are caused, for example, by non-adiabatic processes in the molecule can have a significant impact on the efficiency of the these devices. More favorable lifetimes are in practiced, achieved by chemical substitution of particular base compound.

In this contribution, we investigate meso-tert-butyl-BODIPY, which is known to for its low fluorescence yield, caused by the non-radiative decay through a conical intersection [1]. We show theoretically that strong light-matter coupling by means of an optical nano-cavity may be used to modify the excited state lifetime.

[1] R. C. Couto, M. Kowalewski, Phys. Chem. Chem. Phys, 24, 19199 (2022).