Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
HL: Fachverband Halbleiterphysik
HL 54: 2D Materials IX – Photonic properties and devices
HL 54.9: Vortrag
Freitag, 13. März 2026, 11:45–12:00, POT/0081
Room temperature hybrid exciton-polaritons in a Perovskite-TMD heterostructrue — •Marti Struve1, Hamid Pashaei Adl1, Oliwia Janikwska2, Sven Stephan3, Jamie Fitzgerald4, Paulina Plochocka2,5, Christian Schneider1, and Martin Esmann1 — 1Carl von Ossietzky Universität, Oldenburg, Germany — 2Wrocław University of Science and Technology, Wrocław, Poland — 3University of Applied Sciences Emden, Emden, Germany — 4Philipps-University Marburg, Marburg, Germany — 5Laboratoire National des Champs Magnetiques Intenses, Toulouse, France
Chemically synthesized quasi-2D halide perovskites (HaP) exhibit strong excitonic resonances with large oscillator strength, high binding energy and tunable emission, making them an interesting platform for polariton physics at room temperature. Transition metal dichalcogenide (TMD), while showing lower oscillator strength, offer access to K-valley selective rules, opening the access to polarized excitonic states. In this work, we demonstrate the formation of hybrid exciton-polaritons in a quasi-2D HaP-TMD heterostructure embedded in a planar open cavity at room temperature. Using the tunability of our open cavity we first confirm strong coupling of our materials separately. When combined the system exhibits three polaritonic branches, showing a hybridization of the polariton modes that is reproduced using a three-oscillator Hamiltonian, revealing a state where both excitonic fractions become comparable. Our results lay the foundation to imprint the accessibility of the K-valley selection rules to HaP-polaritons devices leading to additional degrees of freedom.
Keywords: Open Cavity; Exciton-Polariton; Halide Perovskite