Structural and Optical Properties of e‐Beam Evaporated $MX2$ Thin Films Available to Purchase

$WSe2$ and $MoSe2$ thin films were obtained by using electron beam evaporation technique at room temperature. The films were characterized by EDAX, XRD, TEM and optical absorption. The X‐ray diffraction pattern shows that prepared polycrystalline thin films have a hexagonal phase which is confirmed by TEM also. Optical properties show a direct bandgap with bandgap energy 1.89 eV and 1.98 eV for $WSe2$ and $MoSe2$ respectively.