Regensburg 2022 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 25: Poster 1

HL 25.26: Poster

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

Optical properties of multilayer MoS2 under high pressure — •Paul Steeger1, Robert Schmidt1, Ilya Kupenko2, Carmen Sanchez-Valle2, Steffen Michaelis de Vasconcellos1, and Rudolf Bratschitsch11University of Münster, Institute of Physics and Center for Nanotechnology, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany — 2University of Münster, Institute for Mineralogy, Corrensstr. 24, 48149 Münster, Germany

Vertically stacked homo- and heterostructures of 2D semiconductors have recently attracted a lot of attention. One of the most critical parameters affecting their optical and electronic properties is the interlayer coupling. Controlling the distance between the layers by applying pressure to the sample allows to tune the interlayer interaction in-situ and opens up new ways to investigate its influence on the physical properties of multi-layered 2D materials. Here, we use a diamond anvil cell to measure how absorption and emission properties of multilayer MoS2 crystals change under pressure, highlighting the differences between inter- and intralayer excitons.

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