Thermoelectric effect in single layer epitaxial graphene formed on semiconductor substrate. Simple analytical model

Abstract

In this paper we have investigated thermoelectric effect in the epitaxial graphene on a semiconductor substrate using a simple model. We have obtained the expressions for static conductance and thermopower of the epitaxial graphene. The thermopower of the epitaxial graphene can be abnormally large near the edges of the semiconductor band gap.

Thermoelectric transport in epitaxial graphene on a size-quantized substrate

“…Indeed, the study of the band struc ture of graphene shows that it is a semimetal with a lin ear carrier energy spectrum near K points of the Brillouin zone [2]. Such a spectrum leads to a variety of unique electronic, optical [2,[4][5][6][7], and adsorption properties [8][9][10][11]. Currently, graphene is being actively discussed even for such applied purposes as natural gas purification [12] and water desalination [13].…”