The effect of electron-phonon interaction on the thermoelectric properties of defect zigzag nanoribbons
arXiv:1606.06050 · doi:10.1016/j.ssc.2016.09.013
Abstract
Thermoelectric properties of graphene nanoribbons with periodic edge vacancies and antidot lattice are investigated. The electron-phonon interaction is taken into account in the framework of the Hubbard-Holstein model with the use of the Lang-Firsov unitary transformation scheme. The electron transmission function, the thermopower and the thermoelectric figure of merit are calculated. We have found that the electron-phonon interaction causes a decrease in the peak values of the thermoelectric figure of merit and the shift of the peak positions closer to the center of the bandgap. The effects are more pronounced for the secondary peaks that appear in the structures with periodic antidot.
References in corpus (5)
- Energy Gaps in Graphene Nanoribbons
- Non-adiabatic Kohn-anomaly in a doped graphene monolayer
- Symmetry-based approach to electron-phonon interactions in graphene
- Vibrational modes and low-temperature thermal properties of graphene and carbon nanotubes: A minimal force-constant model
- Accurate determination of electron-hole asymmetry and next-nearest neighbor hopping in graphene