The Light Absorption Enhancement in Graphene Monolayer Resulting from the Diffraction Coupling of Surface Plasmon Polariton Resonance

Liu, Bo; Yu, Wenjing; Yan, Zhendong; Cai, Peng; Gao, Fan; Tang, Chaojun; Gu, Ping; Liu, Zhengqi; Chen, Jing

doi:10.3390/nano12020216

Cited by 20 publications

(7 citation statements)

References 60 publications

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“…This limitation hinders the practical applications of high-performance photodetectors based on 2D materials. To address this challenge, researchers have primarily focused on special device structure designs, such as distributed Bragg reflector microcavities, metallic reflectors, photonic crystal nanocavities, etc [154][155][156], to confine light within the 2D materials and thereby enhance light absorption. In addition, under the influence of an ultrahigh ferroelectric polarization field, the band of 2D materials in FeFETs can be changed, thereby broadening the light response range of the detector.…”

Section: Discussionmentioning

confidence: 99%

2D materials-based photodetectors combined with ferroelectrics

Bai,

Wu,

Yang

et al. 2024

Nanotechnology

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Photodetectors are essential optoelectronic devices that play a critical role in modern technology by converting optical signals into electrical signals, which are one of the most important sensors of the informational devices in current “Internet of Things” era. Two-dimensional (2D) material-based photodetectors have excellent performance, simple design and effortless fabrication processes, as well as enormous potential for fabricating highly integrated and efficient optoelectronic devices, which has attracted extensive research attention in recent years. The introduction of spontaneous polarization ferroelectric materials further enhances the performance of 2D photodetectors, moreover, companying with the reduction of power consumption. This article reviews the recent advances of materials, devices in ferroelectric-modulated photodetectors. This review starts with the introduce of the basic terms and concepts of the photodetector and various ferroelectric materials applied in 2D photodetectors, then presents a variety of typical device structures, fundamental mechanisms and potential applications under ferroelectric polarization modulation. Finally, we summarize the leading challenges currently confronting ferroelectric-modulated photodetectors and outline their future perspectives.

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Section: Discussionmentioning

confidence: 99%

2D materials-based photodetectors combined with ferroelectrics

Bai,

Wu,

Yang

et al. 2024

Nanotechnology

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“…Numerous approaches have been devised and thoroughly investigated to unravel the persistent problem of lower absorption in graphene [4]. Specifically, the enhanced absorption of graphene in the violet [5][6][7], visible [8,9], near-infrared [10,11], and THz [12,13] regions can enable its use in a wider range of applications, including optoelectronics, solar cells, and terahertz imaging.…”

Section: Introductionmentioning

confidence: 99%

Enhanced dual-band absorption of graphene mediated by an aluminum metastructure

Khan¹,

Lü²,

Wang

2023

2D Mater.

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Graphene absorption from the visible to infrared spectrum has great potential and broad applications in the miniature of modern optoelectronic biosensors and photodetectors. However, graphene has zero bandgap energy, which limits its absorption to 2.3% in the visible and infrared spectrums. Here we propose a metastructure to optimize the graphene absorption in the visible to near-infrared frequency regions. The metastructure comprising an array of aluminium (Al) square blocks (Al-SBs) on a graphene layer, a silica spacer, and an Al reflector is investigated for absorption enhancement. This work deciphers the effect of the periodicity of decorated Al-SBs on the evolution of dual-band absorption in single layer graphene under normal incidence. Electromagnetic signatures of two excited modes indicate that surface plasmon and magnetic dipole plasmon are mediators of absorption. The investigation into the impact of geometrical parameters illustrates that the coexisting phenomena of a relative broad peak and a relative sharp peak have been achieved simultaneously with high efficiency. The dynamic manipulation of surface plasmon and magnetic dipole plasmon presents a great potential for a diverse range of applications such as sensing and imaging. By controlling the periodicity of Al-SBs, it is possible to achieve active control of surface plasmon resonance, and a detection range of 300 nm is observed. Dynamic control of the magnetic dipole plasmon successfully achieved by modifying the electrical environment of the graphene layer, which is realized by altering the underlying spacer material. Collectively, findings of this study demonstrate the significant potential of the suggested metastructure for its prospective applications in optoelectronic devices including biosensors, photovoltaics, and photodetectors that rely on the dynamic control of surface and magnetic plasmon resonances.

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“…Recent advances in the heterogeneous integration of layered materials on silicon photonics (SiPh) platforms have been impressive [20], [21], [22], [23], [24], [25], [26], [27]. For instance, graphene demonstrated an extraordinary performance for onchip modulators and photodetectors [28], [29], while it has a universal absorption of ∼2.3% in the visible and near-infrared spectrum [30]. Considering graphene is only 0.34 nm thick; this optical absorption efficiency is remarkable.…”

Section: Introductionmentioning

confidence: 99%

Anisotropic Van Der Waals 2D GeAs Integrated on Silicon Four-Waveguide Crossing

Dushaq

Villegas

Paredes

et al. 2023

J. Lightwave Technol.

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In-plane optical anisotropy plays a critical role in manipulating light in a wide range of planner photonic devices. In this study, the strong anisotropy of multilayer 2D GeAs is leveraged and utilized to validate the technical feasibility of on-chip light management. A 2D GeAs is stamped into an ultra-compact silicon waveguide four-way crossing optimized for operation in the Ooptical band. The measured optical transmission spectra indicated a remarkable discrepancy between the in-plane crystal optical axes with an attenuation ratio of ∼3.5 (at 1330 nm). Additionally, the effect of GeAs crystal orientation on the electro-optic transmission performance is demonstrated on a straight waveguide. A notable 50% reduction in responsivity was recorded for devices constructed with cross direction compared to devices with a crystal a-direction parallel to the light polarization. This extraordinary optical anisotropy, combined with a high refractive index ∼4 of 2D GeAs, opens possibilities for efficient on-chip light manipulation in photonic devices.

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The Light Absorption Enhancement in Graphene Monolayer Resulting from the Diffraction Coupling of Surface Plasmon Polariton Resonance

Cited by 20 publications

References 60 publications

2D materials-based photodetectors combined with ferroelectrics

2D materials-based photodetectors combined with ferroelectrics

Enhanced dual-band absorption of graphene mediated by an aluminum metastructure

Anisotropic Van Der Waals 2D GeAs Integrated on Silicon Four-Waveguide Crossing

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