Photo-thermoelectric and photoelectric contributions to light detection in metal-graphene-metal photodetectors

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2014
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Echtermeyer, Tim J.
Nene, P. S.
Gorbachev, Roman V.
Eiden, Anna L.
Milana, Silvia
Sun, Zhipei
Schliemann, John
Lidorikis, Elefterios
Novoselov, Konstantin S.
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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.

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ISO 690ECHTERMEYER, Tim J., P. S. NENE, Maxim TRUSHIN, Roman V. GORBACHEV, Anna L. EIDEN, Silvia MILANA, Zhipei SUN, John SCHLIEMANN, Elefterios LIDORIKIS, Konstantin S. NOVOSELOV, Andrea C. FERRARI, 2014. Photo-thermoelectric and photoelectric contributions to light detection in metal-graphene-metal photodetectors
BibTex
@unpublished{Echtermeyer2014Photo-29399,
  year={2014},
  title={Photo-thermoelectric and photoelectric contributions to light detection in metal-graphene-metal photodetectors},
  author={Echtermeyer, Tim J. and Nene, P. S. and Trushin, Maxim and Gorbachev, Roman V. and Eiden, Anna L. and Milana, Silvia and Sun, Zhipei and Schliemann, John and Lidorikis, Elefterios and Novoselov, Konstantin S. and Ferrari, Andrea C.}
}
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