Electromagnetic resonances of solar-selective absorbers with nanoparticle arrays embedded in a dielectric layer

Sakurai, Atsushi; Kawamata, Tomoaki

doi:10.1016/j.jqsrt.2016.08.005

Cited by 15 publications

(8 citation statements)

References 29 publications

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“…When T abs =1000 K and C=86.3 suns, the η of the present near-perfect absorber is 87.16% which is 1.86% larger than the 85.3% of an absorber based on tungsten nanosphere arrays. [34] Moreover, when T abs =1000 K and C=100 suns, the η of the near-perfect absorber is 88.17% which is 0.55% higher than the 87.62% of an absorber constructed by tungsten nanosphere-nanocuboid arrays. [36] Furthermore, when T abs =1050 K and C=100 suns, the near-perfect absorber achieves the η of 85.81% that is 3.13% higher than the 82.68% of a SiO 2 /SiC-W/W three-layer absorber.…”

Section: Near-perfect Solar Selective Absorbermentioning

confidence: 94%

“…Song et al [33] numerically investigated an absorber with a W/SiO 2 /W nanocuboid array on a tungsten basis, and the results showed that the average α λ of 0.953 is obtained within 0.6-1.8 μm. Sakurai et al [34] embedded a tungsten nanosphere array in a dielectric layer, achieving the α tot of 0.896 and the η of 85.3% at 1000 K and 86.3 suns. Hou et al [35] designed an absorber that consists of a cylindrical SiO 2 array coated by tungsten and Al 2 O 3 , which can achieve the α tot of above 0.95 and keep stable under 1300 K. Ye et al [36] proposed an absorber using a nanosphere-nanocuboid array, obtaining the α tot of 0.9535 and the η of 87.56% under 1000 K and 100 suns.…”

Section: Introductionmentioning

confidence: 99%

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A high-Temperature Near-Perfect Solar Selective Absorber Combining Tungsten Nanohole and Nanoshuriken Arrays

Qiu¹,

Xu²,

Li³

et al. 2021

ES Energy Environ.

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Solar selective absorber is a key component that directly influences the photothermal efficiency in high-temperature solar energy harvesting. In present work, a solar selective absorber combining tungsten nanohole and nanoshuriken arrays was proposed and studied. Firstly, the geometry of the absorber was optimized, obtaining a near-perfect absorber. Then, evaluation of the near-perfect absorber indicated that it can achieve near unit spectral absorptance within 0.28-1.25 μm and obtain a solar absorptance of 0.9457, thus achieving a photothermal efficiency of 91.52% at 1273 K under 1000 suns. Then, analysis of its absorbing mechanisms revealed that the high solar absorptance is contributed by the impedance matching, and the coupling effects of the cavity resonance, surface plasmon polaritons, magnetic polaritons, and local surface plasmon resonance. In addition, study on the effects of the geometric parameters indicated that the absorber performance is insensitive to the changes in geometric parameters when the changes are within fabrication uncertainties. Finally, effects of the polarization angle and incident angle were examined, indicating that the near-perfect absorber exhibits high insensitivities to wide-angle incidence and all-angle polarization. These results indicate the near-perfect absorber is promising for high temperature solar energy harvesting.

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Section: Near-perfect Solar Selective Absorbermentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

A high-Temperature Near-Perfect Solar Selective Absorber Combining Tungsten Nanohole and Nanoshuriken Arrays

Qiu¹,

Xu²,

Li³

et al. 2021

ES Energy Environ.

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show abstract

“…More recently, with the rapid development of nanofabrication technologies, metamaterials have been extensively studied due to its significant role in many potential applications, such as biosensors [2,3], optical modulators [4,5], and photodetectors [6,7]. Within the context, metamaterial-based perfect absorbers have drawn a lot of attention and various types of broadband metamaterial absorbers have been applied to solar energy harvesting [8][9][10][11][12][13][14][15]. Generally, to gain a broadband perfect absorber, several possible strategies have been proposed such as multi-sized nanostructures [8,9], impedance matching [10,11], slow-light modes [12,13], and electromagnetic resonances [14,15].…”

Section: Introductionmentioning

confidence: 99%

“…Within the context, metamaterial-based perfect absorbers have drawn a lot of attention and various types of broadband metamaterial absorbers have been applied to solar energy harvesting [8][9][10][11][12][13][14][15]. Generally, to gain a broadband perfect absorber, several possible strategies have been proposed such as multi-sized nanostructures [8,9], impedance matching [10,11], slow-light modes [12,13], and electromagnetic resonances [14,15]. However, the above mentioned methods may suffer from many disadvantages such as relatively narrow-band absorption, polarization or angle sensitivity, poor selectivity and structural complexity, which seriously limit their potential applications in practice.…”

Section: Introductionmentioning

confidence: 99%

A near-ideal solar selective absorber with strong broadband optical absorption from UV to NIR

et al. 2020

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A near-ideal solar absorber, which is composed of a metal nanowire array and a planar multilayer system, is proposed and investigated. Both numerical and analytical results show that the proposed nanostructure can achieve over 90% optical absorption throughout the wavelength range of 300–1909 nm due to the coupled effect of multiple resonance modes, and can maintain a good absorption stability over a wide incident angle regardless of the polarization states. Meanwhile, for practical applications, the total photothermal conversion efficiency can reach 95.57% at operating temperature of 373.15 K, which is particularly useful in solar energy harvesting. The absorption performance is also strongly dependent on the diameter and height of nanowire as well as the thicknesses of dielectric layers, enabling the further improvement of both the operating bandwidth and absorption efficiency. Moreover, by adjusting the period of the multilayer or nanowire materials, the selective absorption properties of this nanostructure can be flexibly controlled to satisfy more spectral requirements. These features make the presented designs hold promise for a series of solar-dependent optical applications, such as photothermal energy generation and thermal emitters.

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“…For example, it has been demonstrated that a stack of metallic nanoparticle arrays and SiO

arrays can be fabricated [ 31 ]. Alternatively, as suggested by [ 32 ], core-shell nanoparticle arrays can be fabricated using tungsten core and SiO

shell. This is followed by sputtering or chemical vapor deposition of SiO

.…”

Section: Introductionmentioning

confidence: 99%

Mie-Metamaterials-Based Thermal Emitter for Near-Field Thermophotovoltaic Systems

et al. 2017

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In this work, we theoretically analyze the performance characteristics of a near-field thermophotovoltaic system consisting a Mie-metamaterial emitter and GaSb-based photovoltaic cell at separations less than the thermal wavelength. The emitter consists of a tungsten nanoparticle-embedded thin film of SiO2 deposited on bulk tungsten. Numerical results presented here are obtained using formulae derived from dyadic Green’s function formalism and Maxwell-Garnett-Mie theory. We show that via the inclusion of tungsten nanoparticles, the thin layer of SiO2 acts like an effective medium that enhances selective radiative heat transfer for the photons above the band gap of GaSb. We analyze thermophotovoltaic (TPV) performance for various volume fractions of tungsten nanoparticles and thicknesses of SiO2.

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Electromagnetic resonances of solar-selective absorbers with nanoparticle arrays embedded in a dielectric layer

Cited by 15 publications

References 29 publications

A high-Temperature Near-Perfect Solar Selective Absorber Combining Tungsten Nanohole and Nanoshuriken Arrays

A high-Temperature Near-Perfect Solar Selective Absorber Combining Tungsten Nanohole and Nanoshuriken Arrays

A near-ideal solar selective absorber with strong broadband optical absorption from UV to NIR

Mie-Metamaterials-Based Thermal Emitter for Near-Field Thermophotovoltaic Systems

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