https://doi.org/10.1051/epjconf/202637701005
Influence of Hubbard Term on Power Factor in Zigzag Graphene Nanoribbon
1 Physics Department, Faculty of Mathematics and Natural Science, Jakarta State University, Street of Rawamangun Muka, East Jakarta 13220, Indonesia
2 Institute of Microengineering and Nanoelectronics (IMEN) Universiti Kebangsaan Malaysia 43600 UKM Bangi, Selangor, Malaysia
* Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published online: 2 July 2026
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 small carrier doping should be included to improve the performance of power factor, which surpasses the optimum value. This indicated that zigzag graphene nanoribbon is appropriate for the thermoelectric material.
© The Authors, published by EDP Sciences, 2026
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