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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.
In: Advanced Materials, 2022, 34 (38)
doi: 10.26083/tuprints-00022899
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Item Type: Article
Type of entry: Secondary publication
Title: Chemical Vapor Deposition of High‐Optical‐Quality Large‐Area Monolayer Janus Transition Metal Dichalcogenides
Language: English
Date: 23 December 2022
Place of Publication: Darmstadt
Year of primary publication: 2022
Publisher: Wiley-VCH
Journal or Publication Title: Advanced Materials
Volume of the journal: 34
Issue Number: 38
Collation: 9 Seiten
DOI: 10.26083/tuprints-00022899
Corresponding Links:
Origin: Secondary publication DeepGreen
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.

Uncontrolled Keywords: 2D materials, exciton–phonon coupling, high optical quality, Janus transition metal dichalcogenides, monolayers
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-228997
Classification DDC: 500 Science and mathematics > 530 Physics
600 Technology, medicine, applied sciences > 660 Chemical engineering
Divisions: 05 Department of Physics > Institute for Condensed Matter Physics
Date Deposited: 23 Dec 2022 13:23
Last Modified: 14 Nov 2023 19:05
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/22899
PPN: 503251860
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