Regensburg 2022 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 25: Poster 1

HL 25.26: Poster

Wednesday, September 7, 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 Bratschitsch¹ — ¹University 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.