Black-Phosphorus Terahertz Photodetectors

Abstract

The discovery of graphene and the related fascinating capabilities have triggered an unprecedented interest in inorganic two-dimensional (2D) materials. Despite the impressive impact in a variety of photonic applications, the absence of energy gap has hampered its broader applicability in many optoelectronic devices. The recent advance of novel 2D materials, such as transition-metal dichalcogenides or atomically thin elemental materials, (e.g. silicene, germanene and phosphorene) promises a revolutionary step-change. Here we devise the first room-temperature Terahertz (THz) frequency detector exploiting few-layer phosphorene, e.g., a 10 nm thick flake of exfoliated crystalline black phosphorus (BP), as active channel of a field-effect transistor (FET). By exploiting the direct band gap of BP to fully switch between insulating and conducting states and by engineering proper antennas for efficient light harvesting, we reach detection performance comparable with commercial detection technologies, providing the first technological demonstration of a phosphorus-based active THz device.

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• Exciton-Photonics: From Fundamental Science to Applications
• Heterostructured hBN-BP-hBN Nanodetectors at THz Frequencies
• Plasmonics with two-dimensional semiconductors "beyond graphene": from basic research to technological applications
• Thermoelectric terahertz photodetectors based on selenium-doped black phosphorus flakes
• Roadmap for Photonics with 2D Materials
• Micromechanical bolometers for sub-Terahertz detection at room temperature
• Terahertz detection with graphene FETs: photothermoelectric and resistive self-mixing contributions to the detector response
• Ultralow-noise terahertz detection by p-n junctions in gapped bilayer graphene
• Hybrid 2D Black Phosphorus/Polymer Materials: New Platforms for Device Fabrication
• Tailored nano-electronics and photonics with two-dimensional materials at terahertz frequencies
• On-chip terahertz modulation and emission with integrated graphene junctions
• Charge carrier transport and lifetimes in n-type and p-type phosphorene as 2D device active materials: an ab initio study
• Dual gate black phosphorus velocity modulated transistor
• Lattice dynamics and elastic properties of black phosphorus
• Unusually strong lateral interaction in the CO overlayer in phosphorene-based systems
• Theory of the in-plane photoelectric effect in two-dimensional electron systems
• Optimal asymmetry of transistor-based terahertz detectors
• A place for two-dimensional plasmonics in electromagnetic wave detection
• Resonant plasmonic detection of terahertz radiation in field-effect transistors with the graphene channel and the black-As${}_x$P${}_{1-x}$ gate layer
• Band gap reconstruction at the interface between black phosphorus and a gold electrode
• Evidence of Josephson coupling in a few-layer black phosphorus planar Josephson junction
• Current induced by a tilted magnetic field in phosphorene under terahertz laser radiation
• Magnetic ratchet effect in phosphorene
• Inverse Design of Broadband Antennas for Terahertz Devices Based on 2D Materials