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HL: Fachverband Halbleiterphysik
HL 46: Optical Properties
HL 46.4: Vortrag
Donnerstag, 20. März 2025, 10:30–10:45, H15
Room-temperature polariton condensate in a two-dimensional hybrid perovskite — •M. Struve1, C. Bennenhei1, H. P. Adl1, K. W. Song2, H. Shan1, N. Mathukhno1, J. Drawner1, F. Eilenberg3, N. P. Jasti4, D. Cahen4, O. Kyriienko2, C. Schneider1, and M. Esmann1 — 1Institut for Physics, Carl von Ossietzky Universität Oldenburg — 2University Exeter, United Kingdom — 3Frauenhofer IOF, Jena — 4Weizmann Instutute of Science, Israel
Chemically synthesized 2D halide perovskites form naturally grown quantum well stacks. Their large binding energy, tunable emission spectra and high oscillator strength makes them promising platforms for room temperature polaritonics but bosonic condensation and polariton lasing at ambient conditions are yet to be shown. In this work we demonstrate cavity exciton-polariton condensation of 2D Ruddelson-Popper iodine perovskites (BA)2(MA)2Pb3I10 crystal at room temperature [1]. A polariton condensation threshold of Pth≈6.8 fJ with a strong non-linear response is observed. The emergence of spontaneous spatial coherence across the condensate with interferometric measurements is confirmed with a first-order autocorrelation reaching g(1)≈0.6. With our results we lay the foundation for a new class of 2D halide perovskite based room-temperature polariton lasers that offer great potential for hetero-integration with other van-der-Waals materials and combination with photonic crystals. [1] M.Struve et al., arXiv 2024, https://doi.org/10.48550/arXiv.2408.13677
Keywords: Exciton Polariton; Perovskite; Polariton Laser