Electronic and optical properties of MoS 2 –WS 2 multi-layers: First principles study

Energy Transfer from Quantum Dots to Graphene and MoS2: The Role of Absorption and Screening in Two-Dimensional Materials

“…In these calculations, we assume that the dielectric function of the thin films has no thickness dependence. While this is not strictly correct over the entire range of photon energies, we note the approximation holds well in the energy range of the QD emission at 2.1 eV. ,− Because CPS theory only yields the ratio Γ NRET /Γ 0 , the calculation of absolute rates requires an estimate of the QD decay rate in vacuum Γ 0 , or, more practically, in a lossless solvent. Here, we employ the experimentally determined luminescence lifetime of the QDs in toluene (15 ns).…”

Recent Advances in Plasmonic Photocatalysis Based on TiO2 and Noble Metal Nanoparticles for Energy Conversion, Environmental Remediation, and Organic Synthesis

“…Recent theoretical investigations on transition metal-chalcogenides showed that these materials exhibit the indirect plasmonic absorption capability, which is quite different from the earlier reported band gap excitations. [418][419][420] The plasmonic effect in metal chalcogenides is mainly presumed from their collective charge oscillations on the surface propagated by anionic vacancies within the crystal lattice. [418] The injection of the charge carriers from the transition metal-chalcogenides into TiO 2 due to the plasmonic effect was well reported in the literature.…”

“…[418][419][420] The plasmonic effect in metal chalcogenides is mainly presumed from their collective charge oscillations on the surface propagated by anionic vacancies within the crystal lattice. [418] The injection of the charge carriers from the transition metal-chalcogenides into TiO 2 due to the plasmonic effect was well reported in the literature. [176,421] In addition, metal nitrides, such as titanium nitride (TiN) and niobium nitride (Nb 4 N 5 ), are also known to exhibit plasmonic effects with excellent optical properties.…”

Integration of two-dimensional transition metal dichalcogenides with Mie-resonant dielectric nanostructures

“…Bulk TMDs show an unusually high refractive index in the visible and near infrared range [113], a feature that has not fully been harnessed yet. While their layered structure (strong covalent bonds in-plane and weak Van-der-Waals bonds out-of-plane) makes them intrinsically anisotropic, most studies focus on the in-plane component of the dielectric tensor which was shown to exhibit a significantly higher optical constant for both bulk and 2D-TMDs as compared to the respective out-of-plane components [114,115]. Consequently, high refractive index films can be created from 2D-TMDs.…”