Abstract
Abstract We have synthesized the van der Waals (vdW) heterostructures of two-dimensional layered materials (MoS2 and WS2) via physical mixing of different proportions of colloidal dispersions containing exfoliated MoS2 and WS2 nanosheets. The synthesized vdW heterostructures exhibited optical and phononic properties distinct from its components. We find that the A- and B- excitonic peak positions in heterostructures are red shifted with respect to the corresponding peak positions of the constituent materials (MoS2 and WS2) and are also dependent on the compositional ratio used to produce the heterostructures. The in-plane (E12g) and out-of-plane (A1g) Raman modes in heterostructures exhibited hardening with respect to the corresponding modes in individual nanosheets of MoS2 and WS2. Our results highlight the role of interlayer interactions in the synthesized MoS2-WS2 heterostructures.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
