Low-dimensional transition-metal dichalcogenides

In this chapter, we will review the recent theoretical developments on the properties of low-dimensional Transition-Metal diChalcogenides (TMCs) for applications in nano- and opto-electronics. We will compare physical properties, such as electronic structure or lattice dynamics, and show that quantum confinement to lower dimensions causes significant changes in the properties and opens up possibility for new applications. We will show that electronic properties can be tuned by external modulators, such as tensile strain or electric fields. We will focus on the TMCs from groups 5–7 with the 2H polytype.