Ultralow-noise Terahertz Detection by p–n Junctions in Gapped Bilayer Graphene
Source abstract
Abstract
Graphene shows strong promise for the detection of terahertz (THz) radiation due to its high carrier mobility, compatibility with on-chip waveguides and transistors, and small heat capacitance. At the same time, weak reaction of graphene’s physical properties on the detected radiation can be traced down to the absence of a band gap. Here, we study the effect of electrically induced band gap on THz detection in graphene bilayer with split-gate p-n junction. We show that gap induction leads to a simultaneous increase in current and voltage responsivities. At operating temperatures of ∼25 K, the responsivity at a 20 meV band gap is from 3 to 20 times larger than that in the gapless state. The maximum voltage responsivity of our devices at 0.13 THz illumination exceeds 50 kV/W, while the noise equivalent power falls down to 36 fW/Hz 1/2 .
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Terahertz technology and applications · Topological Materials and Phenomena · Photonic Crystals and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Center for Photonics and 2D Materials, Moscow Institute of Physics and Technology, Dolgoprudny 141700, Russian Federation
Programmable Functional Materials Lab, Brain and Consciousness Research Center, Moscow 121205, Russia
Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka 142432, Russian Federation
Institute for Functional Intelligent Materials, National University of Singapore, Singapore 117575, Singapore
Department of Materials Science and Engineering, National University of Singapore, Singapore 117575, Singapore
Funding
Russian Science Foundation · Ministry of Science and Higher Education of the Russian Federation
References (52)
Show source-provided references
1. 10.1038/nphoton.2016.6510.1038/nphoton.2016.65 ↗
2. 10.1038/s41928-018-0173-210.1038/s41928-018-0173-2 ↗
3. 10.1039/C8RA10605C10.1039/C8RA10605C ↗
4. 10.1007/s10762-020-00683-510.1007/s10762-020-00683-5 ↗
5. 10.1007/s10762-019-00639-410.1007/s10762-019-00639-4 ↗
6. 10.1038/nphoton.2010.18610.1038/nphoton.2010.186 ↗
7. 10.1021/acsnano.0c0273810.1021/acsnano.0c02738 ↗
8. 10.1038/nphoton.2017.7510.1038/nphoton.2017.75 ↗
9. 10.1038/srep3565410.1038/srep35654 ↗
10. 10.1002/adfm.20211011910.1002/adfm.202110119 ↗
11. 10.1515/nanoph-2016-015510.1515/nanoph-2016-0155 ↗
12. 10.1021/acsphotonics.2c0010010.1021/acsphotonics.2c00100 ↗
13. 10.1364/AOP.11.00031410.1364/AOP.11.000314 ↗
14. 10.1038/nnano.2014.18210.1038/nnano.2014.182 ↗
15. 10.1038/nmat341710.1038/nmat3417 ↗
16. 10.1038/s41467-018-07848-w10.1038/s41467-018-07848-w ↗
17. 10.1515/nanoph-2020-025510.1515/nanoph-2020-0255 ↗
18. 10.1063/5.006387010.1063/5.0063870 ↗
19. 10.1063/1.368804910.1063/1.3688049 ↗
20. 10.1021/acs.nanolett.7b0362510.1021/acs.nanolett.7b03625 ↗
21. 10.1063/5.000724910.1063/5.0007249 ↗
22. 10.1515/nanoph-2021-057310.1515/nanoph-2021-0573 ↗
23. 10.1021/acs.nanolett.8b0417110.1021/acs.nanolett.8b04171 ↗
24. 10.1038/s41467-020-18544-z10.1038/s41467-020-18544-z ↗
25. 10.1063/5.009772610.1063/5.0097726 ↗
26. 10.1016/j.isci.2022.10516410.1016/j.isci.2022.105164 ↗
27. 10.1021/acs.nanolett.6b0307810.1021/acs.nanolett.6b03078 ↗
28. 10.1038/s41467-020-20721-z10.1038/s41467-020-20721-z ↗
29. 10.1126/science.121138410.1126/science.1211384 ↗
30. 10.1063/1.363205810.1063/1.3632058 ↗
31. 10.1140/epjst/e2007-00229-110.1140/epjst/e2007-00229-1 ↗
32. 10.1038/srep2465410.1038/srep24654 ↗
33. 10.1021/acs.nanolett.2c0411910.1021/acs.nanolett.2c04119 ↗
34. 10.1109/16.48565010.1109/16.485650 ↗
35. 10.1103/PhysRevB.86.04541310.1103/PhysRevB.86.045413 ↗
36. 10.1103/PhysRevLett.118.12680410.1103/PhysRevLett.118.126804 ↗
37. 10.1063/1.501815110.1063/1.5018151 ↗
38. 10.1038/nnano.2012.8810.1038/nnano.2012.88 ↗
39. HEB Product Line. Scontel. https://www.scontel.ru/terahertz (accessed 2023-04-06).
40. Terahertz (THz) Hot Electron Bolometer (HEB) Detectors from 0.3 to 70 THz. Insight Product Co.https://insight-product.com/detect3.htm (accessed 2023-04-06).
41. Bolometer Systems. Infrared Laboratories. https://www.irlabs.com/products/bolometers/bolometer-systems (accessed 2023-04-06).
42. 10.1109/TTHZ.2019.291778210.1109/TTHZ.2019.2917782 ↗
43. 10.1007/s11082-019-2093-410.1007/s11082-019-2093-4 ↗
44. 10.1103/PhysRevLett.109.10660210.1103/PhysRevLett.109.106602 ↗
45. 10.1002/adma.20150205210.1002/adma.201502052 ↗
46. 10.1021/acsnano.1c0875610.1021/acsnano.1c08756 ↗
47. 10.1088/0268-1242/25/9/09500510.1088/0268-1242/25/9/095005 ↗
48. 10.1038/nature0810510.1038/nature08105 ↗
49. 10.1002/aelm.20220051010.1002/aelm.202200510 ↗
50. 10.1038/s41467-018-07558-310.1038/s41467-018-07558-3 ↗
51. 10.1126/science.124435810.1126/science.1244358 ↗
52. 10.48550/arXiv.2212.0535210.48550/arXiv.2212.05352 ↗