TMDC
The TMDC also known as Transition Metal Dichalchogenides. It is a family of 2D materials. The common formula for 2d Material is MX2 where M represents the Transition metal like Tungesten, Molybdenum, e.t.c and X represents the chalcogen like sulhpur, selenium, or Tellurium. The bandgap of these materials are tunable. It has indirect bandgap at Bulk and several layers. When it is thinned down to monolayer, the valence band minima and conduction band maxima shift to K-points. So, these materials are useful in optoelectronics because of strong-light matter interaction and direct band gap.
Currently, I am studying electron dynamics in WS2 by the help of Time-of-flight momentum microscopy. This technique also known as Time-resolved photoemission spectroscopy (Tr-ARPES) is the powerful tool to map the momentum space of this material. By exciting the material by pump beam and probing after some time delay by another beam also known as probe beam, it can disclose many intrinsic dynamics of 2D materials, such as bandgap renormalization, charge carrier scattering, relaxation, and wavefunction localization in moire´ patterns. The further details is found here.