The monolayer MoS2, possessing an advantage over graphene in that it exhibits a band gap whose magnitude is appropriate for solar applications, has attracted increasing attention because of its possible use as a photocatalyst. Herein, we propose a codoping strategy to tune the band structure of ...
W. R. L. Quasiparticle band structure calculation of monolayer, bilayer, and bulk MoS2. 9. Ramasubramaniam, A. Large excitonic effects in monolayers of molybdenum and tungsten dichalcogenides. Phys. Rev. B 86, 115409 (2012). 10. Komsa, H.-P. & Krasheninnikov, A. V. Effects of ...
Of particular significance is the revelation that the versatile vacancies can modulate the band structure of the monolayer MoS2 , leading to a decrease of the bandgap and an obvious n-doping effect. These results are confirmed by scanning tunneling spectroscopy data as well as first-principles ...
Band structure calculations for the two systems, on the other hand, show that the impurity states in the band gap shift towards the valence or conduction bands of monolayer MoS2, depending on the direction of the applied perpendicular electric field. Figure 5 Electric field effect. (a) ...
This is especially true for the transition metal dichalcogenides (TMDCs) family, with MoS2 well documented for its potential in optoelectronic devices. Inspired by its unique thickness-dependent energy band structure, a team of Researchers from China have investigated the electrical and optical ...
However, another band-structure calculation on similar material of monolayer MoS2 indicates the existence of a B-trionic peak next to the B-exitonic peak22. The identification of the B1 CP is not yet clear because it is dominated by the huge B2 CP. This needs to be investigated in more ...
1 for monolayer MoS2, they show a wide dispersion in the fundamental band gap. The same has been found for a number of 2D materials that have been extensively studied in the last years. Results for MoS2, MoSe2, MoTe2, WS2, WSe2, BN, and phosphorene are summarized in the Supplementary ...
Monolayer MoS2Recently, the nonlinear optical processes study on monolayer MoS2 has revealed the existence of a trigonal warping in the band structure which distorts the Fermi surface from a circle at low energies to a triangle at higher energies. Here we theoretically demonstrate that the trigonal...
This is caused by the existence of stable momentum-forbidden dark excitons in the hBN-encapsulated MoS2. Ab-initio band-structure calculations have shown that orbital hybridization between MoS2 and hBN leads to upward shift of Γ-valley of MoS2, which results in lowering of energy of the ...
In their study, the silver (Ag) nanowire (NW) and monolayer MoS2 hybrid structures were experimentally used. The Ag-NW was overlapping partly on the monolayer MoS2 with a 10-nm-thick SiO2 spacer to avoid doping, band-pinning, and PL quenching due to the direct contact of metal and ...