Magneto-photoelectric effect in graphene via tailored potential landscapes

TL;DR

This paper explores how tailored electric potential landscapes in graphene, combined with magnetic fields, can control charge carrier movement for improved photoelectric and photovoltaic applications.

Contribution

It introduces a method to design potential landscapes in graphene to steer photo-generated charge carriers effectively, enhancing transport and energy conversion.

Findings

Potential landscapes enable charge carrier steering

Enhanced charge separation efficiency demonstrated

Implications for photovoltaic device design

Abstract

We consider the propagation of charge carriers in planar graphene under the combined influence of a constant transversal magnetic field $B$ and an in-plane varying electric potential $\phi(x)$. By suitably designing the potential landscape $\phi(x)$, we may effectively steer charge carriers generated by photo-excitation, for example, in order to achieve an efficient charge separation. These finding may pave the way for transport schemes or photoelectric/photovoltaic applications.