Plasmonic nanostructure enhanced graphene-based photodetectors
DOI:
https://doi.org/10.1478/C1V89S1P030Abstract
Graphene exhibits electrical and optical properties promising for future applications in ultra-fast photonics [1]. High carrier mobility and Fermi velocity [2, 3] combined with its constant absorption over the visible wavelength range to the near-infrared [4] potentially allow its application for photodetection over a broad wavelength spectrum, operating at high frequencies. However, absorption being 2.3% per monolayer [4], responsivity of these devices is rather low [5, 6]. Here we show that by combining graphene-based photodetectors with metal-nanostructures, plasmonic effects lead to an increased responsivity.
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Pubblicato
2011-09-15
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Conference Papers
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