Influence of Hubbard Term on Power Factor in Zigzag Graphene Nanoribbon
Teguh Budi Prayitno

Universitas Negeri Jakarta

Abstract

We examined the power factor in zigzag graphene nanoribbon under the Hubbard term as a function of chemical potential. The computational approach was used through the density function theory and Boltzmann transport. As the value of Hubbard term increases, the band gap increases, thus affected the Seebeck coefficient and electrical conductivity. We then calculated the power factor through those two quantities. We found that doping should be included to improve the performance of power factor. This indicated that Hubbard term and doping are two important factors to improve the power factor.

Keywords: Zigzag graphene nanoribbon, Hubbard correction, Power factor

Topic: Material Physics