Excitonic resonances in thin films of WSe<sub>2</sub>: from monolayer to bulk material
Excitonic resonances in thin films of WSe<sub>2</sub>: from monolayer to bulk material
We present optical spectroscopy (photoluminescence and reflectance) studies of thin layers of the transition metal dichalcogenide WSe2, with thickness ranging from mono- to tetra-layer and in the bulk limit. The investigated spectra show the evolution of excitonic resonances as a function of layer thickness, due to changes in the band …