%0 Journal Article
%T Photo-thermoelectric and photoelectric contributions to light detection in metal-graphene-metal photodetectors
%A T. J. Echtermeyer
%A P. S. Nene
%A M. Trushin
%A R. V. Gorbachev
%A A. L. Eiden
%A S. Milana
%A Z. Sun
%A J. Schliemann
%A E. Lidorikis
%A K. S. Novoselov
%A A. C. Ferrari
%J Physics
%D 2014
%I arXiv
%R 10.1021/nl5004762
%X 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 ultra-broadband 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 photo-thermo- and photoelectric effects, both contributing to the overall photoresponse. This paves the way for a more efficient photodetector design for ultra-fast operating speeds.
%U http://arxiv.org/abs/1402.1266v1