Berlin 2024 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 36: Poster III

HL 36.2: Poster

Mittwoch, 20. März 2024, 18:00–20:30, Poster E

Photoluminescence of Organic-Dye/TMD Hybrid Structures — •Julian Schröer, Lisa Böhme, Erik von der Oelsnitz, Alina Schubert, Rico Schwartz, Stefan Lochbrunner, and Tobias Korn — University of Rostock, Institute of Physics, AG Zweidimensionale Kristalle und Heterostrukturen

Thin layers of organic molecules and layered semiconductors build a new compound material with many interesting applications. The optoelectronic properties of these heterostructures strongly depend on the chosen compounds. In our work, we apply photoluminescence spectroscopy to hybrid structures of the organic dye perylene orange (PO) combined with monolayers of transition metal dichalcogenides (TMDs) like MoSe2, MoS2 and WSe2. These hybrid structures are candidates for fast and efficient charge or energy transfer due to their emerging type-II band alignment. Here, we aim to reveal the charge transfer processes in the different heterostructures by examining the excitation density-dependent low-temperature photoluminescence of the exciton and trion of the TMDs. Our work paves the way for a deeper understanding of organic/inorganic heterointerfaces and their application as photodetectors or light-harvesting devices.

Keywords: Organic/Inorganic Interfaces; TMDs; Photoluminescence Spectroscopy; Organic Dye; Charge Transfer