Impact of Phonon Scattering on the Negative-Differential-Resistance Behavior in Graphene Nanoribbon p-n Junctions

In this paper, the effect of electron-phonon scattering on the negative differential resistance of graphene nanoribbon p-n junctions is investigated. The results show that the optical phonon scattering, due to inelasticity, significantly increases the valley current such that the peak-to-valley ratio decreases several orders of magnitude compared to ballistic approximation. It also shifts up the v...