Probing the Multi-disordered Nanoscale Alloy at the Interface of Lateral Heterostructure of MoS-WS

Overview

Journal Nanophotonics

Publisher De Gruyter

Date 2024 Dec 5

PMID 39633998

Authors

Dong Hyeon Kim

Chanwoo Lee

Sung Hyuk Kim

Byeong Geun Jeong

Seok Joon Yun

Hyeong Chan Suh

Dongki Lee

Ki Kang Kim

Mun Seok Jeong

Affiliations

Soon will be listed here.

Abstract

Transition metal dichalcogenide (TMDs) heterostructure, particularly the lateral heterostructure of two different TMDs, is gaining attention as ultrathin photonic devices based on the charge transfer (CT) excitons generated at the junction. However, the characteristics of the interface of the lateral heterostructure, determining the electronic band structure and alignment at the heterojunction region, have rarely been studied due to the limited spatial resolution of nondestructive analysis systems. In this study, we investigated the confined phonons resulting from the phonon-disorder scattering process involving multiple disorders at the lateral heterostructure interface of MoS-WS to prove the consequences of disorder-mediated deformation in the band structure. Moreover, we directly observed variations in the metal composition of the multi-disordered nanoscale alloy Mo W S, consisting of atomic vacancies, crystal edges, and distinct nanocrystallites. Our findings through tip-enhanced Raman spectroscopy (TERS) imply that a tens of nanometer area of continuous TMDs alloy forms the multi-disordered interface of the lateral heterostructure. The results of this study could present the way for the evaluation of the TMDs lateral heterostructure for excitonic applications.

References

Chen C, Hayazawa N, Kawata S . A 1.7 nm resolution chemical analysis of carbon nanotubes by tip-enhanced Raman imaging in the ambient. Nat Commun. 2014; 5:3312. DOI: 10.1038/ncomms4312. View

Lee C, Kim S, Jeong B, Yun S, Song Y, Lee Y . Tip-Enhanced Raman Scattering Imaging of Two-Dimensional Tungsten Disulfide with Optimized Tip Fabrication Process. Sci Rep. 2017; 7:40810. PMC: 5234014. DOI: 10.1038/srep40810. View

Zhao W, Ghorannevis Z, Kumar Amara K, Pang J, Toh M, Zhang X . Lattice dynamics in mono- and few-layer sheets of WS2 and WSe2. Nanoscale. 2013; 5(20):9677-83. DOI: 10.1039/c3nr03052k. View

Xiao D, Liu G, Feng W, Xu X, Yao W . Coupled spin and valley physics in monolayers of MoS2 and other group-VI dichalcogenides. Phys Rev Lett. 2012; 108(19):196802. DOI: 10.1103/PhysRevLett.108.196802. View

Lopez-Sanchez O, Lembke D, Kayci M, Radenovic A, Kis A . Ultrasensitive photodetectors based on monolayer MoS2. Nat Nanotechnol. 2013; 8(7):497-501. DOI: 10.1038/nnano.2013.100. View

Kang M, Kim H, Oleiki E, Koo Y, Lee H, Joo H . Conformational heterogeneity of molecules physisorbed on a gold surface at room temperature. Nat Commun. 2022; 13(1):4133. PMC: 9287342. DOI: 10.1038/s41467-022-31576-x. View

Zhang X, Qiao X, Shi W, Wu J, Jiang D, Tan P . Phonon and Raman scattering of two-dimensional transition metal dichalcogenides from monolayer, multilayer to bulk material. Chem Soc Rev. 2015; 44(9):2757-85. DOI: 10.1039/c4cs00282b. View

Garg S, Fix J, Krayev A, Flanery C, Colgrove M, Sulkanen A . Nanoscale Raman Characterization of a 2D Semiconductor Lateral Heterostructure Interface. ACS Nano. 2021; 16(1):340-350. DOI: 10.1021/acsnano.1c06595. View

Del Corro E, Botello-Mendez A, Gillet Y, Elias A, Terrones H, Feng S . Atypical Exciton-Phonon Interactions in WS2 and WSe2 Monolayers Revealed by Resonance Raman Spectroscopy. Nano Lett. 2016; 16(4):2363-8. DOI: 10.1021/acs.nanolett.5b05096. View

10.

Parkin W, Balan A, Liang L, Das P, Lamparski M, Naylor C . Raman Shifts in Electron-Irradiated Monolayer MoS2. ACS Nano. 2016; 10(4):4134-42. PMC: 5893938. DOI: 10.1021/acsnano.5b07388. View

11.

Lee C, Jeong B, Yun S, Lee Y, Lee S, Jeong M . Unveiling Defect-Related Raman Mode of Monolayer WS via Tip-Enhanced Resonance Raman Scattering. ACS Nano. 2018; 12(10):9982-9990. DOI: 10.1021/acsnano.8b04265. View

12.

Huang T, Cong X, Wu S, Lin K, Yao X, He Y . Probing the edge-related properties of atomically thin MoS at nanoscale. Nat Commun. 2019; 10(1):5544. PMC: 6895227. DOI: 10.1038/s41467-019-13486-7. View

13.

Lee J, Crampton K, Tallarida N, Ara Apkarian V . Visualizing vibrational normal modes of a single molecule with atomically confined light. Nature. 2019; 568(7750):78-82. DOI: 10.1038/s41586-019-1059-9. View

14.

Yu W, Liu Y, Zhou H, Yin A, Li Z, Huang Y . Highly efficient gate-tunable photocurrent generation in vertical heterostructures of layered materials. Nat Nanotechnol. 2013; 8(12):952-8. PMC: 4249654. DOI: 10.1038/nnano.2013.219. View

15.

Ullah F, Sim Y, Le C, Seong M, Jang J, Rhim S . Growth and Simultaneous Valleys Manipulation of Two-Dimensional MoSe-WSe Lateral Heterostructure. ACS Nano. 2017; 11(9):8822-8829. DOI: 10.1021/acsnano.7b02914. View

16.

Koo Y, Lee H, Ivanova T, Savelev R, Petrov M, Kravtsov V . Nanocavity-Integrated van der Waals Heterobilayers for Nano-excitonic Transistor. ACS Nano. 2023; 17(5):4854-4861. DOI: 10.1021/acsnano.2c11509. View

17.

Wang Q, Kalantar-Zadeh K, Kis A, Coleman J, Strano M . Electronics and optoelectronics of two-dimensional transition metal dichalcogenides. Nat Nanotechnol. 2012; 7(11):699-712. DOI: 10.1038/nnano.2012.193. View

18.

Chhowalla M, Shin H, Eda G, Li L, Loh K, Zhang H . The chemistry of two-dimensional layered transition metal dichalcogenide nanosheets. Nat Chem. 2013; 5(4):263-75. DOI: 10.1038/nchem.1589. View

19.

Lee C, Yan H, Brus L, Heinz T, Hone J, Ryu S . Anomalous lattice vibrations of single- and few-layer MoS2. ACS Nano. 2010; 4(5):2695-700. DOI: 10.1021/nn1003937. View

20.

Koo Y, Lee H, Ivanova T, Kefayati A, Perebeinos V, Khestanova E . Tunable interlayer excitons and switchable interlayer trions via dynamic near-field cavity. Light Sci Appl. 2023; 12(1):59. PMC: 9981773. DOI: 10.1038/s41377-023-01087-5. View