3.2 Thermoelectrics of Graphene Antidot Lattices

In this section, we discuss the ballistic thermoelectric properties of a new graphene-based structure, called graphene antidot lattice (GALs) [65]. Although the scattering of electrical and thermal carriers plays an important role in the thermoelectric properties of materials, the ballistic results give us an insight into how these new materials can be used in the future thermoelectric applications. The results show that by introducing antidots in the graphene sheet (Fig. 3.12) the thermal conductance of GALs decreases and the respective $ZT$ values increase.

Figure 3.12: Geometrical structures of different GALs. (a)-(f) indicate pristine graphene, Circ$(10,108)$ , Rect$(10,120)$ , Hex$(10,120)$ , IsoTri$(10,126)$ , and RightTri$(10,126)$ , respectively. Transport is assumed to be in the direction of the $x$ -axis.