  Two-dimensional (2D) materials have captured the attention of the scientific
community due to the wide range of unique properties at nanometer-scale
thicknesses. While significant exploratory research in 2D materials has been
achieved, the understanding of 2D electronic transport and carrier dynamics
remains in a nascent stage. Furthermore, since prior review articles have
provided general overviews of 2D materials or specifically focused on charge
transport in graphene, here we instead highlight charge transport mechanisms in
post-graphene 2D materials with particular emphasis on transition metal
dichalcogenides and black phosphorus. For these systems, we delineate the
intricacies of electronic transport including bandstructure control with
thickness and external fields, valley polarization, scattering mechanisms,
electrical contacts, and doping. In addition, electronic interactions between
2D materials are considered in the form of van der Waals heterojunctions and
composite films. This review concludes with a perspective on the most promising
future directions in this fast-evolving field.
