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Chemical Vapor Deposition of High‐Optical‐Quality Large‐Area Monolayer Janus Transition Metal Dichalcogenides

Gan, Ziyang ; Paradisanos, Ioannis ; Estrada‐Real, Ana ; Picker, Julian ; Najafidehaghani, Emad ; Davies, Francis ; Neumann, Christof ; Robert, Cedric ; Wiecha, Peter ; Watanabe, Kenji ; Taniguchi, Takashi ; Marie, Xavier ; Biskupek, Johannes ; Mundszinger, Manuel ; Leiter, Robert ; Kaiser, Ute ; Krasheninnikov, Arkady V. ; Urbaszek, Bernhard ; George, Antony ; Turchanin, Andrey (2022):
Chemical Vapor Deposition of High‐Optical‐Quality Large‐Area Monolayer Janus Transition Metal Dichalcogenides. (Publisher's Version)
In: Advanced Materials, 34 (38), Wiley-VCH, e-ISSN 1521-4095,
DOI: 10.26083/tuprints-00022899,
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Item Type: Article
Origin: Secondary publication DeepGreen
Status: Publisher's Version
Title: Chemical Vapor Deposition of High‐Optical‐Quality Large‐Area Monolayer Janus Transition Metal Dichalcogenides
Language: English
Abstract:

One‐pot chemical vapor deposition (CVD) growth of large‐area Janus SeMoS monolayers is reported, with the asymmetric top (Se) and bottom (S) chalcogen atomic planes with respect to the central transition metal (Mo) atoms. The formation of these 2D semiconductor monolayers takes place upon the thermodynamic‐equilibrium‐driven exchange of the bottom Se atoms of the initially grown MoSe₂ single crystals on gold foils with S atoms. The growth process is characterized by complementary experimental techniques including Raman and X‐ray photoelectron spectroscopy, transmission electron microscopy, and the growth mechanisms are rationalized by first principle calculations. The remarkably high optical quality of the synthesized Janus monolayers is demonstrated by optical and magneto‐optical measurements which reveal the strong exciton–phonon coupling and enable an exciton g‐factor of −3.3.

Journal or Publication Title: Advanced Materials
Volume of the journal: 34
Issue Number: 38
Place of Publication: Darmstadt
Publisher: Wiley-VCH
Collation: 9 Seiten
Uncontrolled Keywords: 2D materials, exciton–phonon coupling, high optical quality, Janus transition metal dichalcogenides, monolayers
Classification DDC: 500 Naturwissenschaften und Mathematik > 530 Physik
600 Technik, Medizin, angewandte Wissenschaften > 660 Technische Chemie
Divisions: 05 Department of Physics > Institute for Condensed Matter Physics
Date Deposited: 23 Dec 2022 13:23
Last Modified: 04 Jan 2023 08:10
DOI: 10.26083/tuprints-00022899
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-228997
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/22899
PPN: 503251860
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