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- Title
Exciton-dielectric mode coupling in MoS<sub>2</sub> nanoflakes visualized by cathodoluminescence.
- Authors
Vu, Dung Thi; Matthaiakakis, Nikolaos; Saito, Hikaru; Sannomiya, Takumi
- Abstract
Thus, this polarization- and angular-dependence result again verifies that excitons are coupled to the flake dipole modes although we cannot fully distinguish incoherent exciton emission coupled to the dipole mode and coherent exciton-polariton mode emission in the current measurement. Keywords: cathodoluminescence; exciton-dielectric mode coupling; localized field; molybdenum disulfide; scanning transmission electron microscopy EN cathodoluminescence exciton-dielectric mode coupling localized field molybdenum disulfide scanning transmission electron microscopy 2129 2137 9 05/12/22 20220401 NES 220401 1 Introduction Molybdenum disulfide (MoS SB 2 sb ), one of the most common materials amongst two-dimensional (2D) transition metal dichalcogenides (TMDCs) [[1]], has received significant attention owing to its semiconductive nature, tunable bandgap, and its strong light-absorption capacity in the visible region. The MoS SB 2 sb flake exhibits I E i SB 1 sb -exciton band, C-exciton band at 2.78 eV, and the luminescence at lower energies due to B-exciton band (2.03 eV) and A-exciton band at 1.84 eV.
- Subjects
CATHODOLUMINESCENCE; MAXWELL equations; ELECTRON energy loss spectroscopy
- Publication
Nanophotonics (21928606), 2022, Vol 11, Issue 9, p2129
- ISSN
2192-8606
- Publication type
Article
- DOI
10.1515/nanoph-2021-0643