Current-induced enhancement of photo-response in graphene THz radiation detectors
Source abstract
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.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Terahertz technology and applications · Topological Materials and Phenomena · Superconducting and THz Device Technology
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Faculty of Electronics, Photonics and Microsystems, Wrocław University of Science and Technology 1 , 50-372 Wrocław, Poland
Chalmers University of Technology 5 , MC2, SE-412 96 Göteborg, Sweden
CNRS/Laboratoire Charles Coulomb (L2C) 2 , 34095 Montpellier, France
University of Regensburg, Faculty of Physics 3 , D-93053 Regensburg, Germany
CENTERA Laboratories, Institute of High Pressure Physics, Polish Academy of Sciences 4 , PL-01-142 Warsaw, Poland
Funding
Flag-Era · Vetenskapsrådet · Deutsche Forschungsgemeinschaft · Agence Nationale de la Recherche · Terahertz Occitanie Platform, and by CNRS through IRP · Foundation for Polish Science
References (34)
Show source-provided references
1. Graphene field-effect transistors as room-temperature terahertz detectors10.1038/nmat3417 ↗
2. Photodetectors based on graphene, other two-dimensional materials and hybrid systems10.1038/nnano.2014.215 ↗
3. Epitaxial graphene quantum dots for high-performance terahertz bolometers10.1038/nnano.2015.303 ↗
4. Sensitive room-temperature terahertz detection via the photothermoelectric effect in graphene10.1038/nnano.2014.182 ↗
5. Terahertz detection and imaging using graphene ballistic rectifiers10.1021/acs.nanolett.7b03625 ↗
6. Ultrasensitive and wide-bandwidth thermal measurements of graphene at low temperatures10.1103/physrevx.2.039903 ↗
7. Terahertz ratchet effects in graphene with a lateral superlattice10.1103/physrevb.93.075422 ↗
8. Terahertz plasmonic rectification in a spatially periodic graphene10.1063/1.4975829 ↗
9. Resonant terahertz detection using graphene plasmons10.1038/s41467-018-07848-w ↗
10. Theory of the effective Seebeck coefficient for photoexcited two-dimensional materials: Graphene10.1103/physrevb.104.125443 ↗
11. Detection, mixing, and frequency multiplication of terahertz radiation by two-dimensional electronic fluid10.1109/16.485650 ↗
12. Shallow water analogy for a ballistic field effect transistor: New mechanism of plasma wave generation by dc current10.1103/physrevlett.71.2465 ↗
13. Supercollision cooling in undoped graphene10.1038/nphys2494 ↗
14. Electronic cooling in graphene10.1103/physrevlett.102.206410 ↗
15. Anomalous thermoelectric transport of Dirac particles in graphene10.1103/physrevlett.102.166808 ↗
16. Thermoelectric and magnetothermoelectric transport measurements of graphene10.1103/PhysRevLett.102.096807 ↗
17. Graphene bolometer with thermoelectric readout and capacitive coupling to an antenna10.1063/1.5009629 ↗
18. 1996
19. Doping graphene with metal contacts10.1103/PhysRevLett.101.026803 ↗
20. Electrical properties of graphene-metal contacts10.1038/s41598-017-05069-7 ↗
21. Physical model of the contact resistivity of metal-graphene junctions10.1063/1.4874181 ↗
22. Repeated roll-to-roll transfer of two-dimensional materials by electrochemical delamination10.1039/c7nr07369k ↗
23. High mobility graphene on EVA/PET10.3390/nano12030331 ↗
24. Graphene transfer methods: A review10.1007/s12274-021-3345-8 ↗
25. Carrier tunneling in high-frequency electric fields10.1103/physrevlett.80.2409 ↗
26. Spin photocurrents and the circular photon drag effect in (110)-grown quantum well structures10.1134/s0021364006220097 ↗
27. Spin-galvanic effect due to optical spin orientation in n-type GaAs quantum well structures10.1103/physrevb.68.081302 ↗
28. Photon-drag photodetectors for the far-IR and submillimeter regions
29. The shear mode of multilayer graphene10.1038/nmat3245 ↗
30. Raman spectroscopy as a versatile tool for studying the properties of graphene10.1038/nnano.2013.46 ↗
31. Terahertz-frequency electronic transport in graphene10.1103/physrevb.90.045431 ↗
32. Symmetry-breaking supercollisions in Landau-quantized graphene10.1103/PhysRevLett.119.067405 ↗
33. Generation of photovoltage in graphene on a femtosecond timescale through efficient carrier heating10.1038/nnano.2015.54 ↗
34. Large responsivity of graphene radiation detectors with thermoelectric readout: Results of simulations10.3390/s20071930 ↗