Tungsten Diselenide Raman Spectrum
Transition metal dichalcogenide WSe2 is a layered structure stacked by weak van der Waals forces, where a single Se–W–Se layer has a covalently bonded hexagonal quasi-two-dimensional lattice formation. Having a truly remarkable chemical and mechanical stability, these structures offer new physics — various quantum confinement effects amplified in quasi-2D.
Detailed graph of WSe2 Raman response
Raman spectroscopy of WSe2
In particular, it has been found that as the number of dimensions is reduced, going from bulk to a monolayer, the WSe2 Raman mode located near 250 cm−1 splits into two peaks, at approximately 250 and 261 cm−1, as a result of broken degeneracy. Therefore, WSe2 Raman spectroscopy makes it possible to understand the vibrational properties of crystals and gain detailed insight into their physical characteristics.
What is Raman Spectroscopy?
Raman Spectra Library
Raman spectroscopy can uniquely identify many chemical and biological agents.