Gouider, F.; Salman, M.; Göthlich, M.; Schmidt, H.; Ahlers, F.-J. et al.: Terahertz detectors based on graphene. In: Journal of Physics: Conference Series 456 (2013), Nr. 1, 12011. DOI:
https://doi.org/10.1088/1742-6596/456/1/012011
Zusammenfassung: |
In this study we present magnetotransport an magnetooptical data obtained in the magnetic field range 0T < B < 7T at detectors patterned in Corbino geometry on epitaxial graphene wafer using a Ge detector. We observed the cyclotron resonance of charge carriers in these wafers by measurement of the transmission of THz wafes through the unpatterned squares (about 4 × 4mm2) of the wafers as a function of the magnetic field B applied perpendicular to the wafer. Further, we performed measurements of the photocunductivity of graphene-based devices shaped in Corbino geometry, induced by terahertz (THz) radiation generated by a p-Ge laser (emitting in the energy range 7.5meV ≤ Eph ≤ 11meV). Our photoconductivity measurement imply that graphene devices are suitable for the detection of terahertz radiation.
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Lizenzbestimmungen: |
CC BY 3.0 Unported - https://creativecommons.org/licenses/by/3.0/
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Publikationstyp: |
Article |
Publikationsstatus: |
publishedVersion |
Erstveröffentlichung: |
2013 |
Schlagwörter (englisch): |
Corbino geometry, Energy ranges, Epitaxial graphene, Graphene devices, Magneto-optical, Measurements of, Terahertz detectors, Terahertz radiation, Germanium, Graphene, Magnetic fields, Terahertz waves, Silicon wafers
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Fachliche Zuordnung (DDC): |
530 | Physik
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Kontrollierte Schlagwörter: |
Konferenzschrift
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