Graphene-antenna sandwich photodetector
WebWe report on an integrated plasmonic ultraviolet (UV) photodetector composed of aluminum Fano-resonant heptamer nanoantennas deposited on a Gallium Nitride (GaN) active layer which is grown on a sapphire substrate to generate significant photocurrent via formation of hot electrons by nanoclusters upon the decay of nonequilibrium plasmons. … WebThe sandwiched photodetector achieved an internal quantum efficiency of up to 20% in the visible and near-infrared spectrums, and a responsivity of 13 mA W −1 . ... View in full …
Graphene-antenna sandwich photodetector
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WebSep 15, 2024 · 2D material-plasmonic hybrid photodetectors. A, Photocurrent measurements of the graphene-antenna sandwich photodetector obtained along the line-scan direction with different antenna geometries. Data from the control device without an Au antenna are also presented. The inset is a schematic of the device, with the zero point … WebSep 1, 2024 · E, SEM image of the graphene-antenna sandwich photodetector in which a single gold heptamer sandwiched between two monolayer graphene sheets. ... Design strategies for two‐dimensional material ...
WebJun 19, 2012 · Abstract. Nanoscale antennas sandwiched between two graphene monolayers yield a photodetector that efficiently converts visible and near-infrared … WebJun 13, 2024 · Since the discovery of graphene, its applications to electronic and optoelectronic devices have been intensively and thoroughly researched. Extraordinary and unusual electronic and optical properties …
Webadshelp[at]cfa.harvard.edu The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A WebDec 17, 2024 · Fig. 1: Design concept and main results of metasurface-mediated graphene photodetectors. a Illustration of the designed metasurface-mediated graphene …
WebNov 1, 2024 · Graphene-antenna sandwich photodetector. Nano Lett. (2012) M.L. Brongersma et al. Plasmon-induced hot carrier science and technology. Nat. Nanotechnol. (2015) A. Manjavacas et al. Plasmon-induced hot carriers in metallic nanoparticles. ACS Nano (2014) B. Luk'yanchuk et al.
WebAug 31, 2011 · We study photodetection in graphene near a local electrostatic gate, which enables active control of the potential landscape and carrier polarity. We find that a strong photoresponse only appears when and where a p–n junction is formed, allowing on–off control of photodetection. Photocurrents generated near p–n junctions do not require … five plus one halfWebMay 1, 2024 · In this paper, a graphene photodetector modified with both gold nanoparticles and silver nanoparticles was discussed. The performance of the photodetector was improved by the common electrode structure prepared by transferring graphene on the top of the device. ... Graphene-antenna sandwich photodetector. … five plus five rights of drug administrationWebNano Letters on line published plasmonic enhanced Graphene-Antenna Sandwich Photodetector investigation. (Nano Letters 2012, 12, doi: 10.1021/nl301774e) Nanoscale antennas sandwiched between two graphene monolayers yield a photodetector that efficiently converts visible and near-infrared photons intoelectrons with an 800% … can i use frozen basil for pestoWebNov 29, 2024 · The structure under consideration (Fig. 1) consists of two building blocks: grating made of Si (\(\varepsilon = \varepsilon_{g} = 12.25\)) and a slab of graphene-dielectric metamaterial.The function of the first building block is creation of higher-order transmission channel(s). In such a case, the coupling of the incident waves differs for the … five plus five makes tenWebJan 30, 2016 · We report the fabrication and characteristics of a novel graphene-Ag 0 hybrid plasmonic nanostructure-based photodetector exhibiting moderately high responsivity … five plus twenty fivefive plus five equalsWebJul 1, 2015 · Nowadays, nanoscience, nanofabrication technologies and versatile materials have sparked a new vision of UV photodetectors, which move toward higher precision, lower energy consumption and greater ... five plump turkeys