In Situ Mapping of Pressure-Induced Exciton Traps in Suspended MoS2 Monolayers Using Fabry–Perot Interference

Leonard Geilen; Lukas Schleicher; Alexander Musta; Benedict Brouwer; Eva M. Weig; Alexander Holleitner; Anne Rodriguez

doi:10.1021/acsaom.5c00285

In Situ Mapping of Pressure-Induced Exciton Traps in Suspended MoS₂ Monolayers Using Fabry–Perot Interference

Leonard Geilen
, Lukas Schleicher
, Alexander Musta
, Benedict Brouwer
, Eva M. Weig
, Alexander Holleitner
, Anne Rodriguez

Walter Schottky Institut
Technical University of Munich
Munich Center for Quantum Science and Technology (MCQST)

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

We demonstrate the in situ readout of the spatial profile of suspended MoS2 monolayers hosted on substrates with nanostructured holes. As the profiles are spatially bent, the suspended MoS2 monolayers act as exciton traps with a tunable luminescence intensity and energy. The tunability is realized by controlling the environmental pressure on the monolayers, which allows one to control hundreds of suspended MoS2 monolayers on a single substrate. The in situ readout is based on Fabry-Perot interferences and a model of the corresponding reflectance contrast maps of the investigated monolayers.

Original language	English
Pages (from-to)	2283-2289
Number of pages	7
Journal	ACS Applied Optical Materials
Volume	3
Issue number	10
DOIs	https://doi.org/10.1021/acsaom.5c00285
State	Published - 24 Oct 2025

Keywords

TMDCs
pressure controlled exciton trap
reflectance contrast spectroscopy
suspended MoS

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10.1021/acsaom.5c00285

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title = "In Situ Mapping of Pressure-Induced Exciton Traps in Suspended MoS2 Monolayers Using Fabry–Perot Interference",

abstract = "We demonstrate the in situ readout of the spatial profile of suspended MoS2 monolayers hosted on substrates with nanostructured holes. As the profiles are spatially bent, the suspended MoS2 monolayers act as exciton traps with a tunable luminescence intensity and energy. The tunability is realized by controlling the environmental pressure on the monolayers, which allows one to control hundreds of suspended MoS2 monolayers on a single substrate. The in situ readout is based on Fabry-Perot interferences and a model of the corresponding reflectance contrast maps of the investigated monolayers.",

keywords = "TMDCs, pressure controlled exciton trap, reflectance contrast spectroscopy, suspended MoS",

author = "Leonard Geilen and Lukas Schleicher and Alexander Musta and Benedict Brouwer and Weig, \{Eva M.\} and Alexander Holleitner and Anne Rodriguez",

note = "Publisher Copyright: {\textcopyright} 2025 The Authors. Published by American Chemical Society",

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doi = "10.1021/acsaom.5c00285",

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AU - Geilen, Leonard

AU - Schleicher, Lukas

AU - Musta, Alexander

AU - Brouwer, Benedict

AU - Weig, Eva M.

AU - Holleitner, Alexander

AU - Rodriguez, Anne

PY - 2025/10/24

Y1 - 2025/10/24

N2 - We demonstrate the in situ readout of the spatial profile of suspended MoS2 monolayers hosted on substrates with nanostructured holes. As the profiles are spatially bent, the suspended MoS2 monolayers act as exciton traps with a tunable luminescence intensity and energy. The tunability is realized by controlling the environmental pressure on the monolayers, which allows one to control hundreds of suspended MoS2 monolayers on a single substrate. The in situ readout is based on Fabry-Perot interferences and a model of the corresponding reflectance contrast maps of the investigated monolayers.

AB - We demonstrate the in situ readout of the spatial profile of suspended MoS2 monolayers hosted on substrates with nanostructured holes. As the profiles are spatially bent, the suspended MoS2 monolayers act as exciton traps with a tunable luminescence intensity and energy. The tunability is realized by controlling the environmental pressure on the monolayers, which allows one to control hundreds of suspended MoS2 monolayers on a single substrate. The in situ readout is based on Fabry-Perot interferences and a model of the corresponding reflectance contrast maps of the investigated monolayers.

KW - TMDCs

KW - pressure controlled exciton trap

KW - reflectance contrast spectroscopy

KW - suspended MoS

UR - https://www.scopus.com/pages/publications/105035537839

U2 - 10.1021/acsaom.5c00285

DO - 10.1021/acsaom.5c00285

M3 - Article

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SN - 2771-9855

VL - 3

SP - 2283

EP - 2289

JO - ACS Applied Optical Materials

JF - ACS Applied Optical Materials

IS - 10

ER -

In Situ Mapping of Pressure-Induced Exciton Traps in Suspended MoS₂ Monolayers Using Fabry–Perot Interference

Abstract

Keywords

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