Electronic properties of graphene-MoS2 contacts

Single layer MoS$_2$ is a two-dimensional semiconductor which has attracted interest due to its electronic and optical properties. However, experimental studies of the material are limited by poor contacts. Graphene, a two-dimensional semimetal, is often touted as an ideal contact material. We investigate graphene-MoS$_2$ contacts with first-principles calculations. The density functional calculations predict the possibility of good charge injection from graphene to the MoS$_2$.