2024/04/19 by Srinivasa Rao Konda, Puspendu Barik, Konda, Srinivasa Rao +15
Engineering · Materials Science · #2D Materials and Applications #Applied Physics (physics.app-ph) #FOS: Physical sciences #Graphene research and applications #Molecular Junctions and Nanostructures
paper · pdf · doi:10.48550/arxiv.2404.12561
openalex publication_date 2024/04/19 · openalex created_date 2024/04/23 · openalex updated_date 2026/07/28
The studies of the nonlinear optical (NLO) properties of the transition metal dichalcogenides (TMDs) coupled with photoactive particles, plasmonic nanocavities, waveguides, and metamaterials remain in their infancy. This study investigates the third-order NLO properties of MoS2 nanosheets in the presence of a semiconductor photoactive medium. Our extensive studies and the obtained results reveal the counteractive coupling effect of bare and passivated quantum dots on the MoS2 nanosheet, as made evident by the analysis of the NLO processes. The enhanced NLO properties of MoS2 nanosheets functionalized with CdSe and CdSe-V2O5 quantum dots are helpful for applications as saturable absorbers in laser applications and the emission of coherent short-wavelength radiation. The multiphoton-excitation resonance energy transfer mechanism exploiting remote dipole dipole coupling, and ultrafast charge transfer pathways emerges as another plausible way to alter the NLO properties in TMDs.