Graphene-antenna sandwich photodetector

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August undefined, 2024

WebJul 11, 2012 · Nanoscale antennas sandwiched between two graphene monolayers yield a photodetector that efficiently converts visible and near-infrared photons into electrons … WebJul 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 ...

Gold-patched graphene nano-stripes for high-responsivity and …

WebHowever, the bandwidth and response time for this type of graphene photodetector are restricted by the narrow spectral bandwidth and long carrier trapping times of the quantum dots. ... Fang ZY, et al. Graphene–antenna sandwich photodetector. Nano Lett. 2012; 12:3808–3813. doi: 10.1021/nl301774e. [Google Scholar] 29. Yao Y, et al. High ... 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 … philip goacher associates worthing

Graphene-antenna sandwich photodetector - PubMed

WebNano 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% … 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 … philip godfrey and margaret gannon

Gate-Activated Photoresponse in a Graphene p–n Junction

Graphene photodetectors with ultra-broadband and high

WebA metallic nanoantenna, under resonant illumination, injects nonequilibrium hot electrons into a nearby graphene structure, effectively doping the material. A prominent change in carrier density was observed for a … WebOct 1, 2024 · Fig. 3 shows a schematic diagram of the light detection mechanism under macroscopic light irradiation for the graphene photodetector with a Ni mask. When the device is entirely irradiated, electron–hole pairs are photo-excited in the graphene layer. These electrons and holes are spatially separated in the vicinity of the two … true west coffee main street hamiltonhttp://english.phy.pku.edu.cn/info/1031/4094.htm philip glucksburg

"WebMay 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. … " - Graphene-antenna sandwich photodetector

Graphene-antenna sandwich photodetector

Graphene photodetectors with asymmetric device structures on …

WebNov 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 … WebAug 4, 2024 · Low-dimensional inorganic nanostructures such as quantum dots as well as one- and two-dimensional nanostructures are widely studied and already used in high-performance infrared photodetectors. These structures feature large surface-to-volume ratios, tunable light absorption, and electron-limiting effects. This article reviews the state …

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WebMay 14, 2015 · In this letter, the Raman spectroscopy is used to study the interaction between the graphene and GNPs. Different structures of graphene combined with GNPs were prepared at first, including the pure … WebJun 20, 2024 · Fig. 1d shows an optical microscope image for a fabricated photodetector based on gold-patched graphene nano-stripes; the photodetector has an active area of 30 × 30 μm 2. This figure also shows ...

WebJan 30, 2016 · To fabricate the plasmon-enhanced photodetector devices, graphene-Ag 0 hybrid solution was first spin coated on 300-nm-thick SiO 2 /Si (100) substrates. ... Ajayan PM, Nordlander P, Halas NJ (2012) Graphene-antenna sandwich photodetector. Nano Lett 12:3808. Article CAS Google Scholar Download references. Acknowledgments. This … 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 …

WebDec 17, 2024 · Fig. 1: Design concept and main results of metasurface-mediated graphene photodetectors. a Illustration of the designed metasurface-mediated graphene … WebNanoscale antennas sandwiched between two graphene monolayers yield a photodetector that efficiently converts visible and near-infrared photons intoelectrons with an 800% enhancement of the...

WebJan 30, 2016 · We report the fabrication and characteristics of a novel graphene-Ag 0 hybrid plasmonic nanostructure-based photodetector exhibiting moderately high responsivity …

WebABSTRACT: Nanoscale antennas sandwiched between two graphene monolayers yield a photodetector that eﬃciently converts visible and near-infrared photons into electrons … true west brewing acton maWebNov 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. true western roundup durangoWebSep 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 ... true west brewing actonWebJun 19, 2012 · Abstract. Nanoscale antennas sandwiched between two graphene monolayers yield a photodetector that efficiently converts visible and near-infrared … true west dishesWebGraphene-Antenna Sandwich Photodetector Nanoscale antennas sandwiched between two graphene monolayers yield a photodetector that efficiently converts visible and near … philip godfrey and margaret cookWebSep 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 … true west cortez coWebMar 16, 2014 · The working principle of the graphene double-layer heterostructure photodetector can be understood through the device … philip glynn md springfield ma