Graphene–Metamaterial Photodetectors for Integrated Infrared Sensing
Luxmoore, IJ; Liu, PQ; Li, P; et al.Faist, J; Nash, GR
Date: 6 June 2016
Journal
ACS Photonics
Publisher
American Chemical Society
Publisher DOI
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Abstract
In this work we study metamaterial-enhanced graphene photodetectors operating in the mid-IR to THz. The detector element consists of a graphene ribbon embedded within a dual-metal split ring resonator, which acts like a cavity to enhance the absorption of electromagnetic radiation by the graphene ribbon, while the asymmetric metal ...
In this work we study metamaterial-enhanced graphene photodetectors operating in the mid-IR to THz. The detector element consists of a graphene ribbon embedded within a dual-metal split ring resonator, which acts like a cavity to enhance the absorption of electromagnetic radiation by the graphene ribbon, while the asymmetric metal contacts enable photothermoelectric detection. Detectors designed for the mid-IR demonstrate peak responsivity (referenced to total power) of ∼120 mV/W at 1500 cm–1 and are employed in the spectroscopic evaluation of vibrational resonances, thus demonstrating a key step toward a platform for integrated surface-enhanced sensing.
Engineering
Faculty of Environment, Science and Economy
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