Indykiewicz, K. and Bray, C. and Consejo, C. and Teppe, F. and Danilov, S. and Ganichev, S. D. and Yurgens, A. (2022) Current-induced enhancement of photo-response in graphene THz radiation detectors. AIP ADVANCES, 12 (11): 115009. ISSN , 2158-3226
Full text not available from this repository. (Request a copy)Abstract
Thermoelectric readout in a graphene terahertz (THz) radiation detector requires a p-n junction across the graphene channel. Even without an intentional p-n junction, two latent junctions can exist in the vicinity of the electrodes/antennas through the proximity to the metal. In a symmetrical structure, these junctions are connected back-to-back and therefore counterbalance each other with regard to rectification of the ac signal. Because of the Peltier effect, a small dc current results in additional heating in one and cooling in another p-n junction, thereby breaking the symmetry. The p-n junctions then no longer cancel, resulting in a greatly enhanced rectified signal. This allows simplifying the design and controlling the sensitivity of THz radiation detectors.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | TERAHERTZ DETECTION; GENERATION; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Professor Ganichev > Group Sergey Ganichev |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 01 Feb 2024 10:00 |
| Last Modified: | 01 Feb 2024 10:00 |
| URI: | https://pred.uni-regensburg.de/id/eprint/58039 |
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