SKM 2023 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 7: Poster I

HL 7.67: Poster

Montag, 27. März 2023, 13:00–15:00, P2/EG

Exciton-polaritons in Perovskite planar microcavities — •Dominik Horneber¹, Johannes Düreth¹, Simon Betzold¹, Philipp Rieder², Melina Armer², Patrick Dörflinger², Sebastian Klembt¹, Vladimir Dyakonov², and Sven Höfling¹ — ¹Julius-Maximilians-Universität Würzburg, Physikalisches Institut and Würzburg-Dresden Cluster of Excellence ct.qmat, Lehrstuhl für Technische Physik, Am Hubland, 97074 Würzburg, Deutschland — ²Julius-Maximilians-Universität Würzburg, Physikalisches Institut, Lehrstuhl für Experimentelle Physik VI, Am Hubland, 97074 Würzburg, Deutschland

Perovskites with their characteristic structure ABX₃ are widely known for their usage in photovoltaics and photonics due to their outstanding opto-electronic properties in terms of absorption coefficient and long charge carrier lifetime. Since lead bromide perovskites are also known for their large exciton binding energy and oscillator strength, they have attracted interest in the field of polaritonics for e.g. condensation at room temperature.

This work focuses on MAPbBr₃ and lead-free double-perovskite Cs₂AgBiBr₆. We conducted photoluminescence- and lifetime measurements to gain insight into the optical properties of spin-coated thin-films. We also show our results in the investigation of strong coupling between excitons and confined photons at room temperature in different microcavity designs.