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Janus Monolayer Transition-Metal Dichalcogenides
Open accessAbstract
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 MoSe 2, 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.
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Cited by
Recent progress on 2D magnets: Fundamental mechanism, structural design and modification
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Zhang, L., Yang, Z., Gong, T., Pan, R., Wang, H., Guo, Z., Zhang, H., & Fu, X. (2020) · Journal of Materials Chemistry A · doi:10.1039/d0ta01999b · Cited by 406
Recent Progress of Janus 2D Transition Metal Chalcogenides: From Theory to Experiments
Li, R., Cheng, Y., & Huang, W. (2018) · Small · doi:10.1002/smll.201802091 · Cited by 398
Novel structured transition metal dichalcogenide nanosheets
Zhang, X., Lai, Z., Ma, Q., & Zhang, H. (2018) · Chemical Society Reviews · doi:10.1039/c8cs00094h · Cited by 386
Xia, C., Xiong, W., Du, J., Wang, T., Peng, Y., & Li, J. (2018) · Physical Review B · doi:10.1103/physrevb.98.165424 · Cited by 365
Metadata
- Authors
- Zhang, J., Jia, S., Kholmanov, I., Dong, L., Er, D., Chen, W., Guo, H., Jin, Z., Shenoy, V. B., Shi, L., & Lou, J.
- Venue
- ACS Nano
- Publisher
- American Chemical Society (ACS)
- Published
- 2017-08-09
- Volume
- 11
- Issue
- 8
- Pages
- 8192-8198
- ISSN
- 1936-0851 (ISSN-L)
- 1936-086X
- OpenAlex
- W2608790738
- Cited by
- 1,655
- References
- 5
- FWCI
- 35.12
- Type
- journal article
- Language
- en
- Open access
- green
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