Graphene field-effect transistors as room-temperature terahertz detectors.

By L. Vicarelli, Miriam S. Vitiello, D. Coquillat, Antonio Lombardo, Andrea C. Ferrari, Wojciech Knap, M. Polini, V. Pellegrini, A. Tredicucci. Nature Materials, 2012

1,011 citations recorded by the source corpus.

The unique optoelectronic properties of graphene make it an ideal platform for a variety of photonic applications, including fast photodetectors, transparent electrodes in displays and photovoltaic modules, optical modulators, plasmonic devices, microcavities, and ultra-fast lasers. Owing to its high carrier mobility, gapless spectrum and frequency-independent absorption, graphene is a very promising material for the development of detectors and modulators operating in the terahertz region of the electromagnetic spectrum (wavelengths in the hundreds of micrometres), still severely lacking in terms of solid-state devices. Here we demonstrate terahertz detectors based on antenna-coupled graphene field-effect transistors. These exploit the nonlinear response to the oscillating radiation field at the gate electrode, with contributions of thermoelectric and photoconductive origin. We demonstrate room temperature operation at 0.3 THz, showing that our devices can already be used in realistic settings, enabling large-area, fast imaging of macroscopic samples.

Subfields: Atomic and Molecular Physics, and Optics, Civil and Structural Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/05e896b660ab9732548099d1247c2fef35fd0d89

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In Atomic and Molecular Physics, and Optics

In Materials Chemistry

Citations in the corpus

Toward real-time terahertz imaging (2018, background): “The seminal work by Dyakonov and Shur sparked a series of experimental demonstrations of THz detection in FETs, first with III–V semiconductors [305–309], then, more recently, with InAs nanowire [310], graphene [311], and black phosphorus [312].”
Femtosecond-Long Pulse-Based Modulation for Terahertz Band Communication in Nanonetworks (2014, neutral): “Pulses with a peak power of a few μ W, i.e., with equivalent energies of just a few aJ ( 10 − 18 J), have been reported in the related literature [11].”
Terahertz Band Communication: An Old Problem Revisited and Research Directions for the Next Decade (2021, background): “By leveraging the properties of SPP waves, new devices able to generate [59], [60], radiate [61]–[64] and detect [65], [66] THz signals have been developed [59], [63].”
Graphene-based integrated photonics for next-generation datacom and telecom (2018, background): “Several detection mechanisms have been identified for graphene photodetectors, including photovoltaic[215,216], photothermoelectric[216,217], bolometric[218], photogating[219] and plasma-wave-assisted[220].”
Dynamically controlling terahertz wavefronts with cascaded metasurfaces (2021, neutral): “3 In addition to THz sources 4,5 and detectors, 6,7 ultra-compact devices that can dynamically control the wavefronts of THz waves are also highly desired in these applications.”