Janus Monolayer Transition-Metal Dichalcogenides.
By Jing Zhang, S. Jia, I. Kholmanov, Liang Dong, Dequan Er, Weibing Chen, Hua Guo, Zehua Jin, V. Shenoy, Li Shi and 1 more. ACS Nano, 2017
1,319 citations recorded by the source corpus.
The crystal configuration of sandwiched S-Mo-Se structure (Janus SMoSe) at the monolayer limit has been synthesized and carefully characterized in this work. By controlled sulfurization of monolayer MoSe2, the top layer of selenium atoms is substituted by sulfur atoms, while the bottom selenium layer remains intact. The structure of this material is systematically investigated by Raman, photoluminescence, transmission electron microscopy, and X-ray photoelectron spectroscopy and confirmed by time-of-flight secondary ion mass spectrometry. Density functional theory (DFT) calculations are performed to better understand the Raman vibration modes and electronic structures of the Janus SMoSe monolayer, which are found to correlate well with corresponding experimental results. Finally, high basal plane hydrogen evolution reaction activity is discovered for the Janus monolayer, and DFT calculation implies that the activity originates from the synergistic effect of the intrinsic defects and structural strain inherent in the Janus structure.
Subfields: Electrical and Electronic Engineering, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/561c9a793bf78990c3ab0a2eb7b8f1b418eb56d7
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Citations in the corpus
- Magnetism, symmetry and spin transport in van der Waals layered systems (2021, neutral): “Additionally, we confirm that the angular dependence of this internally generated torque changes once the substrate is incorporated and breaks additional symmetries, with the only exception of the magnetic Janus TMD 168,169 , for which the angular dependence remains the same.”
- Very large Dzyaloshinskii-Moriya interaction in two-dimensional Janus manganese dichalcogenides and its application to realize skyrmion states (2019, background): “intrinsic breaking of inversion symmetry, intrinsic DMI and intrinsic chiral textures. Recent experiments have demonstrated that Janus monolayers of transition metal dichalcogenides (TMD), e.g. MoSSe [27, 28], can be synthesized by controlling the reaction conditions. The intrinsically broken invers”