AI Chat Paper
Note: Please note that the following content is generated by AMiner AI. SciOpen does not take any responsibility related to this content.
{{lang === 'zh_CN' ? '文章概述' : 'Summary'}}
{{lang === 'en_US' ? '中' : 'Eng'}}
Chat more with AI
Powered by AMiner. Clicking this button will take you away from SciOpen.
Home Nano Research Article
Article Link
Cite
EndNote(RIS) BibTeX
Collect
Submit Manuscript
Show Outline
Outline
Show full outline
Hide outline
Outline
Show full outline
Hide outline
Research Article

Abnormal intensity and polarization of Raman scattered light at edges of layered MoS2

Yan Zhao1,2, Liheng Zheng1,3, Shiyi Han2, Bo Xu1,2, Zheyu Fang3, Jin Zhang2, Lianming Tong2( )
Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
College of Chemistry and Molecular Engineering, Beijing Science and Engineering Center for Nanocarbons, Beijing National Laboratory for Molecular Sciences, Peking University, Beijing 100871, China
School of Physics, State Key Lab for Mesoscopic Physics, Collaborative Innovation Center of Quantum Matter, and Nano-optoelectronics Frontier Center of Ministry of Education, Peking University, Beijing 100871, China
Show Author Information

Graphical Abstract

Abnormal intensity and polarization of Raman scattered light are found at edges of layered MoS2. The Raman intensity can be enhanced obviously when the polarization direction of incident light is parallel to the edges. Forbidden Raman modes are observed at edge regions, and the polarization of Raman scattered light can be modulated by the edge structure. These abnormal phenomena are attributed to the modulation of the electric fields for the incident and Raman scattered light at edges.

Abstract

The edges of two-dimensional (2D) materials can exhibit special structure and thus distinctive properties differing from the interior, such as the modified photoluminescence emission, the improved electrocatalytic activity, and the enhanced nonlinear optical response. In this work, we report the observation of abrupt enhancement of Raman scattered light at edges of layered MoS2, which is closely related to the polarization of the incident light. More importantly, the intensity of out-of-plane A1g mode is enhanced much more obviously than the in-plane E2g1 mode. The unique optical effect at edges is also reflected on the alteration of Raman selection rule. The forbidden Raman modes are observed at edge region, and the polarization of Raman scattered light can be modulated by the edge structure, which differs obviously from that of the interior. We attribute these particular performances to the modulation of the intensity and distribution of the electric field for the incident and Raman scattered light at the edge. This work provides a systematic research on the intensity and polarization modulation of the Raman scattering at edges, which would be helpful for understanding the distinctive optical properties of the edge structure.

Keywords

Raman scatteringpolarization stateedgesMoS2Raman selection rule

Electronic Supplementary Material

Download File(s)
12274_2022_4256_MOESM1_ESM.pdf (1.6 MB)

References

1

Duong, D. L.; Yun, S. J.; Lee, Y. H. Van der Waals layered materials: Opportunities and challenges. ACS Nano 2017, 11, 11803–11830.
Crossref Google Scholar
2

Schwierz, F.; Pezoldt, J.; Granzner, R. Two-dimensional materials and their prospects in transistor electronics. Nanoscale 2015, 7, 8261–8283.
Crossref Google Scholar
3

Koppens, F. H. L.; Mueller, T.; Avouris, P.; Ferrari, A. C.; Vitiello, M. S.; Polini, M. Photodetectors based on graphene, other two-dimensional materials and hybrid systems. Nat. Nanotechnol. 2014, 9, 780–793.
Crossref Google Scholar
4

Butler, S. Z.; Hollen, S. M.; Cao, L. Y.; Cui, Y.; Gupta, J. A.; Gutiérrez, H. R.; Heinz, T. F.; Hong, S. S.; Huang, J. X.; Ismach, A. F. et al. Progress, challenges, and opportunities in two-dimensional materials beyond graphene. ACS Nano 2013, 7, 2898–2926.
Crossref Google Scholar
5

Huang, Y. L.; Chen, Y. F.; Zhang, W. J.; Quek, S. Y.; Chen, C. H.; Li, L. J.; Hsu, W. T.; Chang, W. H.; Zheng, Y. J.; Chen, W. et al. Bandgap tunability at single-layer molybdenum disulphide grain boundaries. Nat. Commun. 2015, 6, 6298.
Crossref Google Scholar
6

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. et al. Probing the edge-related properties of atomically thin MoS2 at nanoscale. Nat. Commun. 2019, 10, 5544.
Crossref Google Scholar
7

Chow, P. K.; Jacobs-Gedrim, R. B.; Gao, J.; Lu, T. M.; Yu, B.; Terrones, H.; Koratkar, N. Defect-induced photoluminescence in monolayer semiconducting transition metal dichalcogenides. ACS Nano 2015, 9, 1520–1527.
Crossref Google Scholar
8

Jia, X. T.; Campos-Delgado, J.; Terrones, M.; Meunier, V.; Dresselhaus, M. S. Graphene edges: A review of their fabrication and characterization. Nanoscale 2011, 3, 86–95.
Crossref Google Scholar
9

Zhang, C. D.; Chen, Y. X.; Huang, J. K.; Wu, X. X.; Li, L. J.; Yao, W.; Tersoff, J.; Shih, C. K. Visualizing band offsets and edge states in bilayer-monolayer transition metal dichalcogenides lateral heterojunction. Nat. Commun. 2016, 7, 10349.
Crossref Google Scholar
10

Yin, X. B.; Ye, Z. Y.; Chenet, D. A.; Ye, Y.; O’Brien, K.; Hone, J. C.; Zhang, X. Edge nonlinear optics on a MoS2 atomic monolayer. Science 2014, 344, 488–490.
Crossref Google Scholar
11

Duan, J. H.; Chen, R. K.; Cheng, Y.; Yang, T. Z.; Zhai, F.; Dai, Q.; Chen, J. N. Optically unraveling the edge chirality-dependent band structure and plasmon damping in graphene edges. Adv. Mater. 2018, 30, 1800367.
Crossref Google Scholar
12

Okada, S. Energetics of nanoscale graphene ribbons: Edge geometries and electronic structures. Phys. Rev. B 2008, 77, 041408(R).
Crossref Google Scholar
13

Gutiérrez, H. R.; Perea-López, N.; Elías, A. L.; Berkdemir, A.; Wang, B.; Lv, R. T.; López-Urías, F.; Crespi, V. H.; Terrones, H.; Terrones, M. Extraordinary room-temperature photoluminescence in triangular WS2 monolayers. Nano Lett. 2013, 13, 3447–3454.
Crossref Google Scholar
14

Bao, W.; Borys, N. J.; Ko, C.; Suh, J.; Fan, W.; Thron, A.; Zhang, Y. J.; Buyanin, A.; Zhang, J.; Cabrini, S. et al. Visualizing nanoscale excitonic relaxation properties of disordered edges and grain boundaries in monolayer molybdenum disulfide. Nat. Commun. 2015, 6, 7993.
Crossref Google Scholar
15

Lin, X. Q.; Liu, Y. Y.; Wang, K.; Wei, C.; Zhang, W.; Yan, Y. L.; Li, Y. J.; Yao, J. N.; Zhao, Y. S. Two-dimensional pyramid-like WS2 layered structures for highly efficient edge second-harmonic generation. ACS Nano 2018, 12, 689–696.
Crossref Google Scholar
16

You, Y. M.; Ni, Z. H.; Yu, T.; Shen, Z. X. Edge chirality determination of graphene by Raman spectroscopy. Appl. Phys. Lett. 2008, 93, 163112.
Crossref Google Scholar
17

Zhang, S. S.; Zhang, N.; Zhao, Y.; Cheng, T.; Li, X. B.; Feng, R.; Xu, H.; Liu, Z. R.; Zhang, J.; Tong, L. M. Spotting the differences in two-dimensional materials—The Raman scattering perspective. Chem. Soc. Rev. 2018, 47, 3217–3240.
Crossref Google Scholar
18

Zhang, X.; Tan, Q. H.; Wu, J. B.; Shi, W.; Tan, P. H. Review on the Raman spectroscopy of different types of layered materials. Nanoscale 2016, 8, 6435–6450.
Crossref Google Scholar
19

Loudon, R. The Raman effect in crystals. Adv. Phys. 2001, 50, 813–864.
Crossref Google Scholar
20

Ribeiro, H. B.; Villegas, C. E. P.; Bahamon, D. A.; Muraca, D.; Castro Neto, A. H.; de Souza, E. A. T.; Rocha, A. R.; Pimenta, M. A.; de Matos, C. J. S. Edge phonons in black phosphorus. Nat. Commun. 2016, 7, 12191.
Crossref Google Scholar
21

Guo, Y.; Zhang, W. X.; Wu, H. C.; Han, J. F.; Zhang, Y. L.; Lin, S. H.; Liu, C. R.; Xu, K.; Qiao, J. S.; Ji, W. et al. Discovering the forbidden Raman modes at the edges of layered materials. Sci. Adv. 2018, 4, eaau6252.
Crossref Google Scholar
22

Dai, Z. G.; Hu, G. W.; Si, G. Y.; Ou, Q. D.; Zhang, Q.; Balendhran, S.; Rahman, F.; Zhang, B. Y.; Ou, J. Z.; Li, G. G. et al. Edge-oriented and steerable hyperbolic polaritons in anisotropic van der Waals nanocavities. Nat. Commun. 2020, 11, 6086.
Crossref Google Scholar
23

Zhang, X.; Qiao, X. F.; Shi, W.; Wu, J. B.; Jiang, D. S.; Tan, P. H. Phonon and Raman scattering of two-dimensional transition metal dichalcogenides from monolayer, multilayer to bulk material. Chem. Soc. Rev. 2015, 44, 2757–2785.
Crossref Google Scholar
24

Guo, Y.; Liu, C. R.; Yin, Q. F.; Wei, C. R.; Lin, S. H.; Hoffman, T. B.; Zhao, Y. D.; Edgar, J. H.; Chen, Q.; Lau, S. P. et al. Distinctive in-plane cleavage behaviors of two-dimensional layered materials. ACS Nano 2016, 10, 8980–8988.
Crossref Google Scholar
25

Poborchii, V.; Tada, T.; Kanayama, T. Edge-enhanced Raman scattering in Si nanostripes. Appl. Phys. Lett. 2009, 94, 131907.
Crossref Google Scholar
26

Liang, L. B.; Meunier, V. First-principles Raman spectra of MoS2, WS2 and their heterostructures. Nanoscale 2014, 6, 5394–5401.
Crossref Google Scholar
27

Wieting, T. J.; Verble, J. L. Infrared and Raman studies of long-wavelength optical phonons in hexagonal MoS2. Phys. Rev. B 1971, 3, 4286.
Crossref Google Scholar
28

Molina-Sánchez, A.; Wirtz, L. Phonons in single-layer and few-layer MoS2 and WS2. Phys. Rev. B 2011, 84, 155413.
Crossref Google Scholar
29

Zhao, Y.; Han, S. Y.; Zhang, J.; Tong, L. M. Helicity-resolved resonant Raman spectroscopy of layered WS2. J. Raman Spectrosc. 2021, 52, 525–531.
Crossref Google Scholar
30

Xu, B.; Mao, N. N.; Zhao, Y.; Tong, L. M.; Zhang, J. Polarized Raman spectroscopy for determining crystallographic orientation of low-dimensional materials. J. Phys. Chem. Lett. 2021, 12, 7442–7452.
Crossref Google Scholar
31

Chen, S. Y.; Zheng, C. X.; Fuhrer, M. S.; Yan, J. Helicity-resolved Raman scattering of MoS2, MoSe2, WS2, and WSe2 atomic layers. Nano Lett. 2015, 15, 2526–2532.
Crossref Google Scholar
32

Zhao, Y.; Zhang, S. S.; Shi, Y. P.; Zhang, Y. F.; Saito, R.; Zhang, J.; Tong, L. M. Characterization of excitonic nature in Raman spectra using circularly polarized light. ACS Nano 2020, 14, 10527–10535.
Crossref Google Scholar
Nano Research
Volume 15 Issue 7,
July 2022
Pages 6416-6421
DOI: 10.1007/s12274-022-4256-z
Cite this article:
Zhao Y, Zheng L, Han S, et al. Abnormal intensity and polarization of Raman scattered light at edges of layered MoS2. Nano Research, 2022, 15(7): 6416-6421. https://doi.org/10.1007/s12274-022-4256-z
Topics:
Raman spectroscopy

856

Views

2

Crossref

2

Web of Science

2

Scopus

1

CSCD

Altmetrics
Received: 15 December 2021
Revised: 27 January 2022
Accepted: 20 February 2022
Published: 21 April 2022
© Tsinghua University Press 2022
Return