Ultra-broadband light trapping using nanotextured decoupled graphene multilayers

Anguita, José V.; Ahmad, Muhammad; Haq, Sajad; Allam, J.; Silva, S. Ravi P.

doi:10.1126/sciadv.1501238

Cited by 100 publications

(53 citation statements)

References 57 publications

(118 reference statements)

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“…Due to the absence of bandgap, graphene exhibits an extremely broadband absorption from UV to THz . It is found that despite of the atomic layer thickness, graphene absorbs 2.3% of incident photons without significant wavelength dependence .…”

Section: Nanostructured Infrared Sensitive Materials For Photodetectorsmentioning

confidence: 56%

“…It is found that despite of the atomic layer thickness, graphene absorbs 2.3% of incident photons without significant wavelength dependence . In photodetectors, its absorption efficiency could be improved by stacking multilayers or by engineering graphene into other nanostructures, such as nanodisks . With the enormous carrier mobility (up to 2.5 × 10 5 cm 2 V −1 s −1 ) and ultrafast carrier dynamics (∼ps), graphene based photodetector are possible to work at the extremely high frequency of 500 GHz .…”

Section: Nanostructured Infrared Sensitive Materials For Photodetectorsmentioning

confidence: 99%

See 1 more Smart Citation

Nanostructured Materials and Architectures for Advanced Infrared Photodetection

Zhuge

Zheng

Luo

et al. 2017

Adv Materials Technologies

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Infrared photodetectors are finding widespread applications in telecommunication, motion detection, chemical sensing, thermal imaging and bio‐medical imaging, etc. The nanostructured materials and architectures are attracting extensive interests in photodetectors in view of the potential benefits from confined light‐matter interaction, fast carrier dynamics and ultrahigh photoconductive gains. This review concentrates on the photodetection in the infrared spectrum and recent progresses in constructing advanced infrared photodetectors based on quantum wells, dots, and the rapidly evolving 1D and 2D materials are summarized. The recent achievements in exploring nanostructured plasmonic metamaterials for the intriguing subwavelength photon confinement and waveguides in devices are also surveyed considering their importance in device integration. An outlook of infrared photodetection is given in the end as a guideline for this vigorous field.

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Section: Nanostructured Infrared Sensitive Materials For Photodetectorsmentioning

confidence: 56%

Section: Nanostructured Infrared Sensitive Materials For Photodetectorsmentioning

confidence: 99%

Nanostructured Materials and Architectures for Advanced Infrared Photodetection

Zhuge

Zheng

Luo

et al. 2017

Adv Materials Technologies

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“…Vertically aligned carbon nanotubes and graphene nanoarrays have been fabricated to achieve broadband and efficient light absorption because of the optical transition of p-bond that strongly absorbs light and resonant absorption in the nanostructures. [8][9][10][11] On the other hand, strong light absorption was realized in periodic plasmonic structures through top-down lithography or three-dimensional (3D) self-assembly of metal nanoparticles (MNPs). 12,13 Patterned graphene nanostructures on metal surfaces have been designed to synergistically couple broadband light via plasmonic enhancement to achieve high photothermal absorption.…”

Section: Introductionmentioning

confidence: 99%

Graphene-Metal-Metastructure Monolith via Laser Shock-Induced Thermochemical Stitching of MOF Crystals

Jiang

Tong

Liu

et al. 2020

Matter

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Monolith of ultrafine metal nanoparticles dispersed on porous graphene is directly fabricated via laser conversion of MOF crystals in air. This monolith exhibited high light absorptivity above 99% across the solar spectrum, ascribing to synergetic light absorption within cavities of dense metal nanoparticle arrays. Rational design of MOF precursors and adjustment of laser parameters allow for precise control of metal nanoparticle size and graphene structure, which promises high solar-thermal conversion efficiency for solar desalination.

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“…At present, there are two ways to reduce reflection. One is to fabricate multi-layer interference coating [8][9][10][11][12] , and the other is prolonging the optical path to achieve light-trapping effect [13][14][15] . However, the limitation of the former is that the mechanical robustness is not satisfactory, and the latter shows poor transparency and obvious scattering.…”

Section: Introductionmentioning

confidence: 99%

Rapid Fabrication of Bio-inspired Antireflection Film Replicating From Cicada Wings

Wang

Feng

et al. 2020

J Bionic Eng

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Inspired by cicada wings, a flexible film with self-cleaning and broadband antireflection properties was fabricated with a rapid, straightforward and cost-effective method. The cicada wing was selected as the original template, and a polymethyl methacrylate (PMMA) negative replica was obtained by evaporation solvent process. The original template was directly peeled off. Subsequently, the polydimethylsiloxane (PDMS) was spread in the as-prepared PMMA negative replica. After curing and peeling processes, the PDMS positive replica was manufactured successfully. The morphologies and performances of cicada wings were perfectly inherited by the PDMS positive replica. What is more, the excellent optical property of cicada wing was investigated experimentally and theoretically. Compared with flat PDMS film, the average reflectivity of structural PDMS film was reduced from 9% to 3.5% in the wavelength range of 500 nm-900 nm. These excellent antireflection properties of bio-inspired antireflection film can be attributed to the nanostructures which achieve a gradient refractive index between air and the materials, and the mechanism of the antireflection properties was revealed via effective medium theory. Besides, the bio-inspired broadband antireflective film exhibited superhydrophobic property after the surface treatment (a 152.1˚ water contact angle), and it also displayed satisfactory flexibility. This work provided a universal method to fabricate the exquisite biological structures, realizing the transfer of structure and function. Moreover, the multifunctional antireflection film exhibited the potential value for applications in optical communications, flexible display screens, and anti-dazzle glasses.

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Ultra-broadband light trapping using nanotextured decoupled graphene multilayers

Abstract: A study of graphene on metal nanotextured surfaces for ultra-broadband light trapping, blackbody absorbers, and thermal imaging.

Cited by 100 publications

References 57 publications

Nanostructured Materials and Architectures for Advanced Infrared Photodetection

Nanostructured Materials and Architectures for Advanced Infrared Photodetection

Graphene-Metal-Metastructure Monolith via Laser Shock-Induced Thermochemical Stitching of MOF Crystals

Rapid Fabrication of Bio-inspired Antireflection Film Replicating From Cicada Wings

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