Berlin 2024 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 17: Organic Semiconductors
HL 17.6: Talk
Tuesday, March 19, 2024, 11:00–11:15, EW 015
Room-temperature polariton lasing and photonic confinement in an organic microcavity — •Dominik Horneber1, Johannes Düreth1, Tim Schembri2, Simon Betzold1, Sven Höfling1, Matthias Stolte2, Frank Würthner2, and Sebastian Klembt1 — 1Julius-Maximilians-Universität Würzburg, Physikalisches Institut and Würzburg-Dresden Cluster of Excellence ct.qmat, Lehrstuhl für Technische Physik, Am Hubland, 97074 Würzburg, Deutschland — 2Center for Nanosystems Chemistry (CNC), Julius-Maximilians-Universität Würzburg, Theodor-Boveri-Weg, 97074, Würzburg, Deutschland
Perylene bisimides (PBIs) are organic dyes with quantum yields (PLQY) close to unity and excellent thermal and photo-chemical stability. These features as well as the tunability of their solid-state packing via chemical functionalization make this material class a promising candidate for lasing at room temperature. In this work, we show strong light-matter interaction and exciton-polariton lasing in optical microcavities with a neat layer of a PBI monomer that is shielded by voluminous bay-substituents to prevent aggregation-induced PLQY-quenching. Furthermore, photonic confinement in zero-dimensional resonators and chains of coupled resonators is demonstrated which shows the energetic discretization of the modes and the formation of a band-structure, respectively. This paves the way for the study of non-linear bosonic systems in artificial lattices hosting a highly stable PBI as solid-state emitter.
Keywords: exciton-polaritons; strong coupling; room temperature; lasing; organics