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Probing the edge-related properties of atomically thin MoS2 at nanoscale
Open accessAbstract
Defects can induce drastic changes of the electronic properties of two-dimensional transition metal dichalcogenides and influence their applications. It is still a great challenge to characterize small defects and correlate their structures with properties. Here, we show that tip-enhanced Raman spectroscopy (TERS) can obtain distinctly different Raman features of edge defects in atomically thin MoS 2, which allows us to probe their unique electronic properties and identify defect types (e.g., armchair and zigzag edges) in ambient. We observed an edge-induced Raman peak (396 cm−1) activated by the double resonance Raman scattering (DRRS) process and revealed electron–phonon interaction in edges. We further visualize the edge-induced band bending region by using this DRRS peak and electronic transition region using the electron density-sensitive Raman peak at 406 cm−1. The power of TERS demonstrated in MoS 2 can also be extended to other 2D materials, which may guide the defect engineering for desired properties.
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Cites
Two-dimensional gas of massless Dirac fermions in graphene
Novoselov, K. S., Geim, A. K., Morozov, S. V., Jiang, D., Katsnelson, M. I., Grigorieva, I. V., Dubonos, S. V., & Firsov, A. A. (2005) · Nature · doi:10.1038/nature04233 · Cited by 21,611
Controlled Synthesis of Highly Crystalline MoS 2 Flakes by Chemical Vapor Deposition
Wang, X., Feng, H., Wu, Y., & Jiao, L. (2013) · Journal of the American Chemical Society · doi:10.1021/ja4013485 · Cited by 748
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Cited by
Fundamental understanding and applications of plasmon-enhanced Raman spectroscopy
Wang, X., Huang, S.-C., Hu, S., Yan, S., & Ren, B. (2020) · Nature Reviews Physics · doi:10.1038/s42254-020-0171-y · Cited by 689
Self-citationDefect Chemistry in Heterogeneous Catalysis: Recognition, Understanding, and Utilization
Xie, C., Yan, D., Li, H., Du, S., Chen, W., Wang, Y., Zou, Y., Chen, R., & Wang, S. (2020) · ACS Catalysis · doi:10.1021/acscatal.0c03034 · Cited by 623
Roadmap and Direction toward High-Performance MoS 2 Hydrogen Evolution Catalysts
Cao, Y. (2021) · ACS Nano · doi:10.1021/acsnano.1c01879 · Cited by 405
Metadata
- Authors
- Huang, T.-X., Cong, X., Wu, S.-S., Lin, K.-Q., Yao, X., He, Y.-H., Wu, J.-B., Bao, Y.-F., Huang, S.-C., Wang, X., Tan, P.-H., & Ren, B.
- Venue
- Nature Communications
- Published
- 2019-12-05
- Volume
- 10
- Issue
- 1
- Pages
- 5544-5544
- ISSN
- 2041-1723 (ISSN-L)
- OpenAlex
- W2993726091
- Cited by
- 179
- References
- 2
- FWCI
- 7.03
- Type
- journal article
- Language
- en
- Open access
- gold
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- Huang, T.-X., Cong, X., Wu, S.-S., Lin, K.-Q., Yao, X., He, Y.-H., Wu, J.-B., Bao, Y.-F., Huang, S.-C., Wang, X., Tan, P.-H., & Ren, B. (2019). Probing the edge-related properties of atomically thin MoS2 at nanoscale. Nature Communications. https://doi.org/10.1038/s41467-019-13486-7
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