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

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2014

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Echtermeyer, Tim
Nene, P. S.
Gorbachev, Roman
Eiden, Anna
Milana, Silvia
Sun, Zhipei
Schliemann, John
Lidorikis, Elefterios
Novoselov, Konstantin
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https://doi.org/10.1021/nl5004762
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Nano Letters. 2014, 14(7), pp. 3733-3742. ISSN 1530-6984. eISSN 1530-6992. Available under: doi: 10.1021/nl5004762

Zusammenfassung

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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530 Physik

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Graphene, photodetectors, Raman spectroscopy, photoresponse, optoelectronics

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ISO 690ECHTERMEYER, Tim, P. S. NENE, Maxim TRUSHIN, Roman GORBACHEV, Anna EIDEN, Silvia MILANA, Zhipei SUN, John SCHLIEMANN, Elefterios LIDORIKIS, Konstantin NOVOSELOV, Andrea C. FERRARI, 2014. Photo-thermoelectric and photoelectric contributions to light detection in metal-graphene-metal photodetectors. In: Nano Letters. 2014, 14(7), pp. 3733-3742. ISSN 1530-6984. eISSN 1530-6992. Available under: doi: 10.1021/nl5004762
BibTex
@article{Echtermeyer2014-02-06T07:58:08ZPhoto-29567,
  year={2014},
  doi={10.1021/nl5004762},
  title={Photo-thermoelectric and photoelectric contributions to light detection in metal-graphene-metal photodetectors},
  number={7},
  volume={14},
  issn={1530-6984},
  journal={Nano Letters},
  pages={3733--3742},
  author={Echtermeyer, Tim and Nene, P. S. and Trushin, Maxim and Gorbachev, Roman and Eiden, Anna and Milana, Silvia and Sun, Zhipei and Schliemann, John and Lidorikis, Elefterios and Novoselov, Konstantin and Ferrari, Andrea C.}
}
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