Resonance effects in the Raman scattering of mono- and few layers MoSe${}_2$

Abstract

Using resonant Raman scattering spectroscopy with 25 different laser lines, we describe the Raman scattering spectra of mono- and multi-layers 2H-molybdenum diselenide (MoSe${}_2$) as well as the different resonances affecting the most pronounced features. For high-energy phonons, both A- and E- symmetry type phonons present resonances with A and B excitons of MoSe${}_2$ together with a marked increase of intensity when exciting at higher energy, close to the C exciton energy. We observe symmetry dependent exciton-phonon coupling affecting mainly the low-energy rigid layer phonon modes. The shear mode for multilayer displays a pronounced resonance with the C exciton while the breathing mode has an intensity that grows with the excitation laser energy, indicating a resonance with electronic excitations at energies higher than that of the C exciton.

9 Figures, 9 pages

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Cited by in corpus (35)

• Exciton-phonon coupling in MoSe2 monolayers
• Davydov splitting and excitonic resonance effects in Raman spectra of few-Layer MoSe2
• Optical spectroscopy of excited exciton states in MoS2 monolayers in van der Waals heterostructures
• Raman scattering excitation spectroscopy in monolayer WS${}_2$
• Guide to optical spectroscopy of layered semiconductors
• Charge versus energy transfer in atomically-thin graphene-transition metal dichalcogenide van der Waals heterostructures
• Doped-MoSe2 nanoflakes/3d metal oxide-hydr(oxy)oxides hybrid catalysts for pH-universal electrochemical hydrogen evolution reaction
• Exciton states in monolayer MoSe2 and MoTe2 probed by upconversion spectroscopy
• Stacking-Dependent Interlayer Phonons in 3R and 2H MoS${}_2$
• Phonon-assisted oscillatory exciton dynamics in monolayer MoSe2
• Exciton-phonon coupling strength in single-layer MoSe2 at room temperature
• Dimensional crossover of acoustic phonon lifetime in $2H$-MoSe${}_2$
• Observation of forbidden phonons and dark excitons by resonance Raman scattering in few-layer WS${}_2$
• Quantum interference effects in resonant Raman spectroscopy of single- and triple-layer MoTe${}_2$ from first principles
• Excitonic Resonance Effects and Davydov Splitting in Circularly Polarized Raman Spectra of Few-Layer WSe2
• Chlorine doping of MoSe2 flakes by ion implantation
• Superposition of intra- and inter-layer excitons in twistronic MoSe${}_2$/WSe${}_2$ bilayers probed by resonant Raman scattering
• Exciton spectroscopy and diffusion in MoSe2-WSe2 lateral heterostructures encapsulated in hexagonal boron nitride
• Flipping exciton angular momentum with chiral phonons in MoSe${}_2$/WSe${}_2$ heterobilayers
• Spectrally narrow exciton luminescence from monolayer MoS2 exfoliated onto epitaxially grown hexagonal BN
• Resonant quenching of Raman scattering due to out-of-plane A${}_{1g}$/A'${}_1$ modes in few-layer MoTe${}_2$
• Electron-Phonon Coupling, Thermal Expansion Coefficient, Resonance Effect and Phonon Dynamics in High Quality CVD Grown Mono and Bilayer MoSe2
• Rigid-layer Raman-active modes in $N$-layer Transition Metal Dichalcogenides: interlayer force constants and hyperspectral Raman imaging
• Phonon anharmonicity and thermal conductivity of two-dimensional van der Waals materials: A review
• Direct Observation of Intravalley Phonon Scattering of 2s Excitons in MoSe${}_2$ and WSe${}_2$ Monolayers
• Influence of direct deposition of dielectric materials on the optical response of monolayer WS${}_2$
• Raman Scattering with infrared excitation resonant with MoSe${}_2$ indirect band gap
• The effect of temperature and excitation energy on Raman scattering in bulk HfS${}_2$
• Insights into hyperbolic phonon polaritons in hBN using Raman scattering from encapsulated transition metal dichalcogenide layers
• Raman scattering excitation in monolayers of semiconducting transition metal dichalcogenides
• Interlayer Raman modes in twisted bilayer TMDCs
• Raman Digital Twin of Monolayer Janus Transition Metal Dichalcogenides
• A Se vacancy induced localized Raman mode in two-dimensional MoSe2 grown by CVD
• Mechanical Detuning of Exciton-Phonon Resonance in WS2
• Experimental realisation of Dual Periodicity Moiré Superlattice in a MoSe${}_2$/WSe${}_2$ Heterobilayer