Tunable plasmonics photodetector in near-infrared wavelengths using graphene chemical doping method

Khosravian, Elham; Mashayekhi, Hamid Reza; Farmani, Ali

doi:10.1016/j.aeue.2020.153472

Cited by 38 publications

(9 citation statements)

References 99 publications

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“…[24] The introduction of SPPs can serve as an efficient strategy to enhance the absorption of graphene, then, considerable amount of photocarriers can generate due to the enhanced electromagnetic field confinement at the interface of graphene and plasmonic metal nanostructures. Graphene-based plasmonic photodetectors with nanostructured metal gratings, [25,26] arrows, [27] air slit, [28] and rings [29] have been early investigated by numerical simulation, predicting the considerable enhancement in device responsivity. Besides, the resonant wavelength and intensity could be flexibly tuned by adjusting the nanostructures' geometrical parameters, such as period and filling factor.…”

Section: Introductionmentioning

confidence: 99%

Wafer‐Scale Fabrication of Graphene‐Based Plasmonic Photodetector with Polarization‐Sensitive, Broadband, and Enhanced Response

Fan

Sun

Shi

et al. 2023

Advanced Optical Materials

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Graphene‐based photodetectors draw tremendous interests for broadband photodetection in optical communications, sensing, and hyperspectral imaging. However, the extremely low light absorption coefficient of graphene posts a great challenge for high‐efficiency photodetection. Although plasmonic nanostructures provide resonant absorption enhancement and impressive responsivity, the current fabrication techniques suffer from being time‐consuming, low‐yield, and potentially high‐cost. In this work, a wafer‐scale graphene‐Au nanogratings (Gra‐Au NGs) plasmonic photodetector array is fabricated via two‐beam holographic lithography, which achieves a photosensitive area of 1 mm2, showing balanced abilities of polarization‐sensitive, broadband, and enhanced photoresponse from visible to near‐infrared regions. The maximum polarization extinction ratio and responsivity of the Gra‐Au NGs photodetector reach 6.65 and 2.95 mA W−1. The surface plasmon resonance of Au NGs and near‐field coupling with graphene render strong electric field confinement and enhanced light absorption, which improve the device photoresponse and polarization sensitivity. The hot electrons generation and transportation models in the Gra‐Au NGs heterojunction are proposed, perfectly matching with the photocurrent mapping and equalized energy band distribution. This work enlightens the wafer‐scale fabrication of graphene‐based plasmonic photodetectors, and it can trigger the advances of free‐space detection, such as remote sensing and satellite communication.

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Section: Introductionmentioning

confidence: 99%

Wafer‐Scale Fabrication of Graphene‐Based Plasmonic Photodetector with Polarization‐Sensitive, Broadband, and Enhanced Response

Fan

Sun

Shi

et al. 2023

Advanced Optical Materials

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“…When graphene-based PDs were first studied, the main focus was on analyzing the structures of field-effect transistors. Early studies showed that the light response rate of these PDs was generally < 0.01 A/W [ 14 , 15 ]. In recent years, many studies have been carried out to improve the performance of graphene PDs, with many studies focused on the preparation of graphene conductive films.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress on Graphene Flexible Photodetectors

Wang

Xiao

et al. 2022

Materials

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In recent years, optoelectronics and related industries have developed rapidly. As typical optoelectronics devices, photodetectors (PDs) are widely applied in various fields. The functional materials in traditional PDs exhibit high hardness, and the performance of these rigid detectors is thus greatly reduced upon their stretching or bending. Therefore, the development of new flexible PDs with bendable and foldable functions is of great significance and has much interest in wearable, implantable optoelectronic devices. Graphene with excellent electrical and optical performance constructed on various flexible and rigid substrates has great potential in PDs. In this review, recent research progress on graphene-based flexible PDs is outlined. The research states of graphene conductive films are summarized, focusing on PDs based on single-component graphene and mixed-structure graphene, with a systematic analysis of their optical and mechanical performance, and the techniques for optimizing the PDs are also discussed. Finally, a summary of the current applications of graphene flexible PDs and perspectives is provided, and the remaining challenges are discussed.

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“…In addition, under certain conditions, the dispersion curves have a negative slope, which results in negative refraction [ 19 , 20 ]. Moreover, the two-dimensional structures may be applied for tunable broadband polarization converters [ 21 ], cloaking sensors [ 22 ], and plasmonic photodetectors [ 23 ]. The characteristics of phononic crystals are key in studying these materials.…”

Section: Introductionmentioning

confidence: 99%

Polarization of Acoustic Waves in Two-Dimensional Phononic Crystals Based on Fused Silica

Marunin

Polikarpova

2022

Materials

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The two-dimensional square-lattice phononic crystal is one of the recently proposed acoustic metamaterials. Strong anisotropic propagation of elastic waves makes the material promising for various potential applications in acoustics and acousto-optics. This paper presents a study of the propagation of elastic waves in two-dimensional phononic crystals based on fused silica. The band structures of a phononic crystal are obtained by solving the wave equation in its variational form by the finite element method. The main phononic crystal acoustic characteristics that are of practical interest in acousto-optics are calculated based on the analysis of the dispersion relations. It is shown that the choice of the phononic crystal geometry makes it possible to control the distributions of both the inverse phase velocities and the energy walk-off angles of acoustic modes. The calculations of the acoustic modes’ polarization are in a particular focus. It is demonstrated that under certain conditions, there are exactly three acoustic modes propagating in a phononic crystal, the averaged polarization vectors of which are mutually orthogonal for any directions of the acoustic wave’s propagation. It is argued that the acoustic properties of phononic crystals meet the requirements of acousto-optics.

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Tunable plasmonics photodetector in near-infrared wavelengths using graphene chemical doping method

Cited by 38 publications

References 99 publications

Wafer‐Scale Fabrication of Graphene‐Based Plasmonic Photodetector with Polarization‐Sensitive, Broadband, and Enhanced Response

Wafer‐Scale Fabrication of Graphene‐Based Plasmonic Photodetector with Polarization‐Sensitive, Broadband, and Enhanced Response

Recent Progress on Graphene Flexible Photodetectors

Polarization of Acoustic Waves in Two-Dimensional Phononic Crystals Based on Fused Silica

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