Sang-Min Park, Mark P. Stoykovich, et al.
Advanced Materials
We investigate poly(ethylene imine) and diazonium salts as stable, complementary dopants on graphene. Transport in graphene devices doped with these molecules exhibits asymmetry in electron and hole conductance. The conductance of one carrier is preserved, while the conductance of the other carrier decreases. Simulations based on nonequilibrium Green's function formalism suggest that the origin of this asymmetry is imbalanced carrier injection from the graphene electrodes caused by misalignment of the electrode and channel neutrality points.
Sang-Min Park, Mark P. Stoykovich, et al.
Advanced Materials
Heinz Schmid, Hans Biebuyck, et al.
Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures
P.C. Pattnaik, D.M. Newns
Physical Review B
Julien Autebert, Aditya Kashyap, et al.
Langmuir