Efficient Terahertz detection in black-phosphorus nano-transistors with selective and controllable plasma-wave, bolometric and thermoelectric response. - Laboratoire Charles Coulomb (L2C) Accéder directement au contenu
Article Dans Une Revue Scientific Reports Année : 2016

Efficient Terahertz detection in black-phosphorus nano-transistors with selective and controllable plasma-wave, bolometric and thermoelectric response.

Leonardo Viti
  • Fonction : Auteur
Jin Hu
  • Fonction : Auteur
Dominique Coquillat
  • Fonction : Auteur
  • PersonId : 995041
Antonio Politano
  • Fonction : Auteur
Wojciech Knap
  • Fonction : Auteur
  • PersonId : 1011541
Miriam S. Vitiello
  • Fonction : Auteur

Résumé

The ability to convert light into an electrical signal with high efficiencies and controllable dynamics, is a major need in photonics and optoelectronics. In the Terahertz (THz) frequency range, with its exceptional application possibilities in high data rate wireless communications, security, night-vision, biomedical or video-imaging and gas sensing, detection technologies providing efficiency and sensitivity performances that can be "engineered" from scratch, remain elusive. Here, by exploiting the inherent electrical and thermal in-plane anisotropy of a flexible thin flake of black-phosphorus (BP), we devise plasma-wave, thermoelectric and bolometric nano-detectors with a selective, switchable and controllable operating mechanism. All devices operates at room-temperature and are integrated on-chip with planar nanoantennas, which provide remarkable efficiencies through light-harvesting in the strongly sub-wavelength device channel. The achieved selective detection (∼5-8 V/W responsivity) and sensitivity performances (signal-to-noise ratio of 500), are here exploited to demonstrate the first concrete application of a phosphorus-based active THz device, for pharmaceutical and quality control imaging of macroscopic samples, in real-time and in a realistic setting.
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hal-01280193 , version 1 (27-05-2021)

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Leonardo Viti, Jin Hu, Dominique Coquillat, Antonio Politano, Wojciech Knap, et al.. Efficient Terahertz detection in black-phosphorus nano-transistors with selective and controllable plasma-wave, bolometric and thermoelectric response.. Scientific Reports, 2016, 6, pp.20474. ⟨10.1038/srep20474⟩. ⟨hal-01280193⟩
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