Regensburg 2022 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 25: Poster 1

HL 25.16: Poster

Mittwoch, 7. September 2022, 18:00–20:00, P2

Optical characterization of van der Waals WS2 Monolayer- Pyrenemethylammonium chloride few-layer vertical heterointerfaces — •Mohammed Adel Aly1,2, Hilary Masenda1,3, Arslan Usman1,4, Bettina Wagner5, Johanna Heine5, Marina Gerhard1, and Martin Koch11Department of Physics and Materials Sciences Center, Philipps-Universität, Marburg, 35032 Germany — 2Department of Physics, Faculty of Science, Ain Shams University, Cairo, 11566 Egypt — 3School of Physics, University of the Witwatersrand, Johannesburg, 2050 South Africa — 4Department of Physics, COMSATS University Islamabad - Lahore Campus, Lahore, 54000 Pakistan — 5Department of Chemistry and Material Sciences Center, Philipps-Universität Marburg, 35043 Marburg, Germany

Van-der-Waals transition metal dichalcogenides(vdW-TMDCs) layered materials have received huge attention due to their strong light-matter interaction. Moreover, combining 2D TMDCs with different organic materials opened a new line in heterostructure(Hs) research, providing unprecedented tunability for heterostructure(Hs) engineering. Few layers Pyrenemethylammonium chloride (PyMACL) is an emerging exfoliable organic material that offers distinct properties and could be attractive for photonic and optoelectronic applications. Here, we present our work on WS2/PyMACL vdW-HS. We have investigated our specimen using micro-photoluminescence and time-resolved photoluminescence shedding light on exciton dynamics in such structures, and possible recombination channels. Moreover, investigating possible charge transfer between the different layers of the Hs.

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