Terahertz Detectors based on graphene

20th International Conference on the Application of High Magnetic Fields in Semiconductor Physics

Gouider, Fathi^1 ; Salman, Majdi^1,2 ; Göthlich, Markus^1 ; Schmidt, Hennrik^2,3 ; Ahlers, Franz-J.^4 ; Haug, Rolf^3 ; Nachtwei, Georg^1

Institut für Angewandte Physik, Technische Universität Braunschweig, D-38106, Germany^1

NTH Nano School for Contacts in Nanosystems, Germany^2

Institut für Festkörperphysik, Universität Hannover, D-30167, Hannover, Germany^3

Physikalisch-Technische Bundesanstalt, Braunschweig, D-38116, Germany^4

关键词: Corbino geometry;    Energy ranges;    Epitaxial graphene;    Ge detectors;    Magneto-optical;    Measurements of;    Terahertz detectors;    Terahertz radiation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/456/1/012011/pdf
DOI  :  10.1088/1742-6596/456/1/012011

来源: IOP

【 摘 要 】

In this study we present magnetotransport an magnetooptical data obtained in the magnetic field range 0T 2) 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.