Regensburg 2025 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 13: Poster
DS 13.45: Poster
Donnerstag, 20. März 2025, 18:00–20:00, P1
Spectroscopy of organic dye/TMDC heterostructures — •Christoph von der Oelsnitz1,2, Julian Schröer1,2, Tim Völzer1,2, Tobias Korn1,2, and Stefan Lochbrunner1,2 — 1Institut für Physik, Universität Rostock, Albert-Einstein-Straße 23, 18059 Rostock, Deutschland — 2Department LL&M, Albert-Einstein-Straße 25, 18059 Rostock, Deutschland
Heterostructures composed of organic molecules adsorbed onto transition metal dichalcogenide (TMDC) monolayers can exhibit charge separation after optical excitation, making these systems promising candidates for optoelectronic applications. In this study, we investigate heterostructures consisting of the organic dyes copper phthalocyanine (CuPc) and 3,4,9,10-perylenetetracarboxylic diimide (PTCDI) deposited onto TMDC monolayers and hexagonal boron nitride (hBN), with the latter serving as a non-interacting reference system. First, the preparation of the dye layers via thermal vapor deposition was calibrated and performed. Subsequently, we investigated the dye/TMDC and dye/hBN heterostructures using various spectroscopic methods. In the event of charge separation in the dye/TMDC system, photoluminescence quenching of the dye is expected.
Keywords: Hybrid structures; Heterostructures; Charge transfer; Photoluminescence spectroscopy