We report photoresponse measurements from two comparable epitaxial graphene (EG) devices of different thicknesses (2-layer vs. ∼10-layer EG) made on SiC substrates. An asymmetric metal contact scheme was used in a planar configuration to form a Ti/EG/Pd junction. By moving the laser illumination a ... [Appl. Phys. Lett. 103, 013106 (2013)] published Mon Jul 01, 2013.
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