Journal
NANO LETTERS
Volume 15, Issue 7, Pages 4295-4302Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.5b00137
Keywords
Graphene; plasmons; terahertz; photodetection
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Funding
- U.S. Office of Naval Research [N000140911064, N000141310712, N000141310865]
- National Science Foundation [ECCS 1309750]
- IARPA
- ARC
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [1309750] Funding Source: National Science Foundation
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We report a large area terahertz detector utilizing a tunable plasmonic resonance in subwavelength graphene microribbons on SiC(0001) to increase the absorption efficiency. By tailoring the orientation of the graphene ribbons with respect to an array of subwavelength bimetallic electrodes, we achieve a condition in which the plasmonic mode can be efficiently excited by an incident wave polarized perpendicular to the electrode array, while the resulting photothermal voltage can be observed between the outermost electrodes.
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