Graphene-antenna sandwich photodetector

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August undefined, 2024

WebJun 19, 2012 · Abstract. Nanoscale antennas sandwiched between two graphene monolayers yield a photodetector that efficiently converts visible and near-infrared … http://english.phy.pku.edu.cn/info/1031/4094.htm

Recent developments of infrared photodetectors with low

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 … 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 … food lion in portsmouth

Plasmonic Optical Antennas for Broadband Polarization and …

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 … 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 ... WebCombining graphene with traditional plasmonic structures provides new opportunities and challenges. One particular application for. Graphene is a monolayer plasmonic material that has been widely studied in the area of plasmonics and nanophotonics. Combining graphene with traditional plasmonic structures provides new opportunities and challenges. food lion in pineville

Graphene-antenna sandwich photodetector. - Abstract

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. WebDec 11, 2013 · We demonstrate the controlled enhancement of photoresponsivity in a graphene photodetector by coupling to slow light modes in a long photonic crystal linear defect cavity. Near the Brillouin zone (BZ) boundary, spectral coupling of multiple cavity modes results in broad-band photocurrent enhancement from 1530 nm to 1540 nm. … elderwood at ticonderoga nursing homeWebA 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 … elderwood at scallop shell ri

"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 ... " - Graphene-antenna sandwich photodetector

Graphene-antenna sandwich photodetector

Web目前,人们已经提出各种不同的方法来提高石墨烯在不同波段的吸收率。在波长较长中红外和远红外波段(对应自由空间波长约5～10μm),一种有效提高石墨烯的吸收率的方法是激发“石墨烯表面等离激元(Graphene surface plasmon polaritons,即GSPP)”。 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 …

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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 … 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 …

WebJun 30, 2024 · Position-sensitive detector (PSD) is an optical inspection device for the precise measurements of position, distance, angle, and other relevant physical variables. It is a widely used component in the fields of tracking, aerospace, nanorobotics, and so forth. Essentially, PSD is also a photodetector based on the lateral photovoltaic effect (LPE ... WebJul 11, 2012 · Nanoscale antennas sandwiched between two graphene monolayers yield a photodetector that efficiently converts visible and near-infrared photons into electrons …

WebAug 4, 2024 · The basic approaches towards infrared detection are summarized. Furthermore, a selection of very important and special nanostructured materials and their … 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 ...

WebJun 19, 2012 · Nanoscale antennas sandwiched between two graphene monolayers yield a photodetector that efficiently converts visible and near-infrared photons into electrons …

WebJan 25, 2024 · Nanometre-scale germanium photodetector enhanced by a near-infrared dipole antenna. ... (2012) Graphene-antenna sandwich photodetector. Nano Letters, 12(7), pp. 3808–3813. elderwood at scallop shellWebABSTRACT: Nanoscale antennas sandwiched between two graphene monolayers yield a photodetector that eﬃciently converts visible and near-infrared photons into electrons … elderwood at wheatfield assisted livingWebNanoscale antennas sandwiched between two graphene monolayers yield a photodetector that efficiently converts visible and near-infrared photons intoelectrons with an 800% enhancement of the... food lion in port wentworth gaWebadshelp[at]cfa.harvard.edu The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A food lion in powhatan vaWebGraphene-Antenna Sandwich Photodetector Nanoscale antennas sandwiched between two graphene monolayers yield a photodetector that efficiently converts visible and near … food lion in powhatanWebOct 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 … food lion in ringgoldWebThe 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 … food lion in richfield