Yet another member of the two-dimensional family is molybdenum ditelluride. Like its other transition metal dichalcogenide siblings, MoTe2 is a semiconductor and when exfoliated to a monolayer shows a direct band gap of approximately 1.1 eV. In this article, we discuss the MoTe2 Raman spectrum.
The MoTe2 Raman spectrum shows a single prominent peak at approximately 233cm-1, corresponding to an in-plane E12d mode. The intensity of this mode increases with decreasing thickness.
The other two modes visible are one at 173cm-1, corresponding to an out-of-plane A1g and at 289cm-1, corresponding to an B12g mode.