2013/04/30 by B. Sachs, L. Britnell, T. O. Wehling +6 · 1 citation
Materials Science · Physics and Astronomy · #2D Materials and Applications #Chemical and Physical Properties of Materials #Graphene research and applications #cond-mat.mes-hall
paper · pdf · doi:10.1063/1.4852615
published as Appl. Phys. Lett. 103, 251607 (2013) · 11 pages, 7 figures
openalex publication_date 2013/12/16 · arxiv created 2013/12/20 · arxiv updated 2013/12/23 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We present a joint theoretical and experimental investigation of charge doping and electronic potential landscapes in hybrid structures composed of graphene and semiconducting single layer molybdenum disulfide (MoS2). From first-principles simulations, we find electron doping of graphene due to the presence of rhenium impurities in MoS2. Furthermore, we show that MoS2 edges give rise to charge reordering and a potential shift in graphene, which can be controlled through external gate voltages. The interplay of edge and impurity effects allows the use of the graphene-MoS2 hybrid as a photodetector. Spatially resolved photocurrent signals can be used to resolve potential gradients and local doping levels in the sample.