This tunability is based on the unique properties of bilayer MoS2, that shows strong optical oscillator strength for the intra- but also inter-layer exciton resonances. As we tune the SHG signal onto these resonances by varying the laser energy, the SHG amplitude is enhanced by several orders ...
where S2His the measured A–B exciton splitting of the as-grown 2H MoS2bilayer and as a value for ΔSOwe take the measured A–B separation in the 3R sample. For S2H = 183 meV and ΔSO = 155 meV, we obtaint⊥ ≈ 49 meV. This value can be compared to the ...
et al. Stacking-dependent optical conductivity of bilayer graphene. ACS Nano 4, 4074–4080 (2010). 13. Huang, S. et al. Probing 5500–5508 (2014). the interlayer coupling of twisted bilayer MoS2 using photoluminescence spectroscopy. Nano Lett. 14, 14. Benameur, M. M., Radisavljevic, ...
pick up technique for high quality heterostructures of bilayer graphene and hexagonal boron nitride. Appl. Phys. Lett. 105, 013101 (2014). Correspondence and requests for materials should be addressed to J.R.S. 29. Kumar, N. et al. Second harmonic microscopy of monolayer MoS2. Phys. Rev. ...
The PL emission peak related to A exciton located at around 678 nm [25] for both samples shows a red-shift comparing to mono-layer MoS2, which is normally 660 nm [26]. The intensity of tri-layer emission is halved compared to that of the bi-layer, resulted from higher degree of...
The giant valley polarization of IX complexes in bilayer MoS2, together with the feasibility of electrical/optical/magnetic control, provides a firm basis for the development of next-generation electronic and optoelectronic applications with valley functionalities.Yanchong Zhao...
EXCITON theoryOPTICAL propertiesIn 2H stacking bilayer MoS2, the exciton with an interlayer nature has been evidenced due to the hybridization of hole states among both layers. The transition energy of this interlayer exciton is located between the A and B excitons. In this work, ...
(τ < 100 fs) obtained by selectively probing the WS2A-exciton of the MoS2/WS2heterobilayer57.f,gSchematic illustration of the phonon scattering-mediated interlayer electron transfer process in the energy (f) and momentum (g) spaces40. LA (A1′) represents the longitudinal acoustic ...
F. Probing interlayer interactions in transition metal dichalcogenide heterostructures by optical spectroscopy: MoS2/WS2 and MoSe2/WSe2. Nano Lett. 15, 5033–5038 (2015). 32. Laikhtman, B. & Rapaport, R. Exciton correlations in coupled quantum wells and their luminescence blue shift. Phys. ...
M. et al. Tailoring the electronic structure in bilayer molybdenum disulfide via interlayer twist. Nano Lett. 14, 3869–3875 (2014). 9. Zhang, C. et al. Interlayer couplings, moiré patterns, and 2D elec- tronic superlattices in MoS2/WSe2 hetero-bilayers. Sci. Adv. 3, e1601459 (2017)...