E-resources
PDF-
Echtermeyer, T. J; Nene, P. S; Trushin, M; Gorbachev, R. V; Eiden, A. L; Milana, S; Sun, Z; Schliemann, J; Lidorikis, E; Novoselov, K. S; Ferrari, A. C
Nano letters, 07/2014, Volume: 14, Issue: 7Journal Article
Graphene’s high mobility and Fermi velocity, combined with its constant light absorption in the visible to far-infrared range, make it an ideal material to fabricate high-speed and ultrabroadband photodetectors. However, the precise mechanism of photodetection is still debated. Here, we report wavelength and polarization-dependent measurements of metal–graphene–metal photodetectors. This allows us to quantify and control the relative contributions of both photothermo- and photoelectric effects, both adding to the overall photoresponse. This paves the way for a more efficient photodetector design for ultrafast operating speeds.
