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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 15: Poster Session I

CPP 15.8: Poster

Montag, 17. März 2025, 19:00–21:00, P4

Low-Temperature Photoluminescence Characterization of Hybrid Metal Halides — •Anton Krüger¹, Meng Yang², Alexander Schauerte¹, Dominik Muth¹, Johanna Heine², and Marina Gerhard¹ — ¹Faculty of Physics and Material Sciences Center, Philipps-Universität Marburg, Renthof 5, D-35032 Marburg, Germany — ²Faculty of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, D-35032 Marburg, Germany

In order to remove the toxic lead component of the otherwise promising perovskite materials, many different approaches have been pursued.
Here, the photoluminescence (PL) and absorption properties of crystalline non-toxic hybrid main group metal halide compounds, (α-Me-2-NA)4E2X10 (NA=Naphthylmethylammonium, E=Sb/Bi, X=Halide) are investigated by means of time-resolved PL spectroscopy, steady-state PL spectroscopy as well as PL excitation spectroscopy.
It is shown that the absorption and PL properties of these materials depend on the metal/halide composition, giving rise to a variety of absorbers and emitters. Furthermore, temperature dependent spectroscopic experiments reveal a thermochromic behavior of the compounds.

Keywords: Photoluminescence; Spectroscopy; Time-resolved; Hybrid metal halides; Low temperature