Journal
APPLIED PHYSICS LETTERS
Volume 105, Issue 24, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4904800
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Funding
- Institute of Optics
- U.S. Department of Energy [DE-FG02-05ER46207]
- National Science Foundation IGERT program [DGE-0966089]
- National Science Foundation [DMR-1309734, ECCS-0335765]
- Army Research Office [W911NF1110378]
- Swiss National Science Foundation [200021-149433]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1309734] Funding Source: National Science Foundation
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We report on the integration of an individual, metal-based, plasmonic nano-antenna on a graphene photodetector. The device exhibits an electromagnetic resonance at a wavelength of 580 nm with well-defined polarization sensitivity. With no applied bias voltage, this antenna-coupled graphene photodetector features a responsivity of similar to 17 nA/mu W, which is four orders of magnitude higher than previously studied single antenna enhanced detectors. Finally, we measure a signal-to-noise ratio of similar to 200 in a 1-Hz bandwidth, with an average photocurrent value of 1.2 nA. (C) 2014 AIP Publishing LLC.
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