Transmission properties of transition metal dichalcogenides and modified graphene thin films in visible, NIR and THz frequency ranges

Here, we demonstrate the transmission properties of a thin tungsten disulfide WS2 film fabricated from liquid crystal solutions in near-infrared and THz ranges. These results are compared with other transition metal dichalcogenides transferred to different substrates and unique FeCl3 intercalated graphene-based structures. The introduction of impurities, the selection of structural dimensions and the use of a suitable substrate for modified 2D layered materials allow controlling the transmission of samples for both the terahertz and infrared ranges, which can be used for the creation of effective modulators and components for THz spectroscopy systems.