Scalable, “Dip‐and‐Dry” Fabrication of a Wide‐Angle Plasmonic Selective Absorber for High‐Efficiency Solar–Thermal Energy Conversion

Mandal, Jyotirmoy; Wang, Derek; Overvig, Adam; Shi, Norman Nan; Paley, Daniel W.; Zangiabadi, Amirali; Cheng, Qin; Barmak, K.; Yu, Nanfang; Yang, Yuan

doi:10.1002/adma.201702156

Cited by 126 publications

(94 citation statements)

References 31 publications

(48 reference statements)

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“…The second is to choose cheap but excellent light absorb materials which can absorb sun light as much as possible and transform it to heat. For this purpose, extensive works have been performed by utilizing different kind of materials including metals, carbon based materials, organic polymers, and semiconductor nanoparticles . Zhu et al took use of “Black Au,” irregular Au particles which are black, realized an excellent solar vapor generation property, while the introducing of Au would increase the price.…”

Section: Figurementioning

confidence: 99%

Bioinspired Soot‐Deposited Janus Fabrics for Sustainable Solar Steam Generation with Salt‐Rejection

et al. 2019

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Inspired by lotus leaves, self‐floating Janus cotton fabric is successfully fabricated for solar steam generation with salt‐rejecting property. The layer‐selective soot‐deposited fabrics not only act as a solar absorber but also provide the required superhydrophobicity for floating on the water. With a polyester protector, the prepared Janus evaporator exhibits a sustainable evaporation rate of 1.375 kW m −2 h −1 and an efficiency of 86.3% under 1 sun (1 kW m −2 ) and also performs well under low intensity and inclined radiation. Furthermore, no special apparatus and/or tedious processes are needed for preparing this device. With a cost of less than $1 per m 2 , this flexible Janus absorber is a promising tool for portable solar vapor generator.

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Section: Figurementioning

confidence: 99%

Bioinspired Soot‐Deposited Janus Fabrics for Sustainable Solar Steam Generation with Salt‐Rejection

et al. 2019

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“…The α of a solar absorber is the fraction between the absorbed radiation and the incident solar radiation on the material surface, as follows:

α (θ, λ) = \frac{\int_{0.3}^{2.5} false[1 - R false(θ, λ false) false] I_{normals normalo normall normala normalr} false(λ false) normald normalλ}{\int_{0.3}^{2.5} I_{normals normalo normall normala normalr} false(λ false) normald normalλ}

…”

Section: Methodsmentioning

confidence: 99%

“…The thermal emittance ϵ is the weighted fraction between the emitted radiation and Planck black body distribution, as follows:

ϵ (T, λ) = \frac{\int_{2.5}^{20} false[1 - R false(false(θ, λ false) false] I_{normalB normalB} false(T, λ false) normald normalλ}{\int_{2.5}^{20} I_{normalB normalB} false(T, λ false) normald normalλ}

where θ is the angle from the normal, λ is the wavelength, R ( λ ) is the spectral reflectance of the material, I solar ( λ ) is the AM 1.5 global solar intensity spectrum, and I BB ( T , λ ) is the spectral intensity emitted by a blackbody at the temperature T .…”

Section: Methodsmentioning

confidence: 99%

Solar‐Thermal Driven Self‐Heating of Micro‐Supercapacitors at Low Temperatures

Sun

Liu

et al. 2018

Solar RRL

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The solar‐thermal conversion of sunlight into heat has received considerable attention due to its low cost and high conversion efficiency. Microsupercapacitors (MSCs) are a promising class of microscale power sources for microelectronic devices, but low‐temperature operation is a huge challenge for their potential applications due to sluggish diffusion kinetics. Here, a simple strategy of adhering a graphene photothermal film on the backside of a model MSC to realize the device self‐heating at low temperatures is demonstrated. At an extremely low ambient temperature of −50 °C, graphene film can increase the actual operating temperature of MSC to −16.5 °C under irradiation of 1 sun. Solar‐driven self‐heating resulted in a 4.5‐fold increase in the specific capacitance, a 2.7‐fold increase in the rate capability, and a 2.8‐fold increase in the energy density without compromising the cyclic stability. This work presents a new application for solar energy and a new approach to improve the overall performance of MSCs at low temperatures.

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“…These issues impede large‐area applications for energy harvesting and photothermal energy generation. A large‐area, wide angular tolerance, broadband absorber with ultrathin metallic nanoparticles has been recently proposed . However, the suitability of this device for photothermal energy generation applications remains unclear because the stability of these metallic nanostructures at high temperatures is usually low.…”

Section: Performance and Fabrication Characteristics Of The State‐of‐mentioning

confidence: 99%

Large‐Area, Ultrathin Metasurface Exhibiting Strong Unpolarized Ultrabroadband Absorption

Yan

Jiang

et al. 2019

Advanced Optical Materials

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despite their sophisticated designs, most of these devices only work in a narrow bandwidth range and require complicated fabrication procedures. These issues impede large-area applications for energy harvesting and photothermal energy generation. A large-area, wide angular tolerance, broadband absorber with ultrathin metallic nanoparticles has been recently proposed. [38] However, the suitability of this device for photothermal energy generation applications remains unclear because the stability of these metallic nanostructures at high temperatures is usually low.Due to the outstanding properties, such as compatibility with the complementary metal oxide semiconductor (CMOS) processes, high temperature resistance, large loss in the visible range, and high reflectivity in the infrared (IR) range, [39] titanium nitride (TiN) has emerged as an ideal material for the preparation of near-perfect absorbers for the high-temperature solar/thermophotovoltaics applications. [39,40] A 5-cycle TiN/silicon dioxide (SiO 2 ) multilayer-based absorber has been reported with an average solar absorptivity of 0.68 [1] and a near-perfect absorption, which requires further enhancement. The high average absorptivity of ≈95% by a ringlike TiN layer using a metamaterial absorber was achieved for the entire visible range. [41] However, the bandwidth of these devices is limited in the visible range. For ultrabroadband light absorption, 3D-truncated TiN nanopillars have been demonstrated for the visible and NIR spectral regions with an average absorptivity of 0.94. [42] This TiN nanopillar-based device, which comprises silicon nanopillars with a large thickness (>1 µm), typically requires expensive, time-consuming fabrication processes, and its thermal emissivity is not verified. Therefore, there are few experimental reports on the large-area ultrathin TiN-based metasurfaces for the strong ultrabroadband light absorption with low thermal emissivity.In this paper, we demonstrate wide-angle ultrabroadband strong light absorption that covers almost the whole solar spectrum (250-2250 nm) by the TiN-based metasurface with an ultrathin thickness (330 nm) on a quartz substrate. The metasurface incorporates dielectric cylinder arrays, a TiN layer, and SiN x layers. This metasurface fundamentally differs from the previously reported absorbers. This device, which uses a symmetrical SiO 2 grating, is independent of incident polarization. Specifically, the carefully designed metasurface exhibits a prominent absorption of both polarizations over wide angles. The outstanding performances of this absorber are realized by Large-area, ultrathin devices with strong ultrabroadband absorption and high angular tolerance are in demand for applications such as ultraviolet protection, energy harvesting, photodetectors, and thermal imaging technology. Although there have been considerable efforts to design and fabricate these devices, the simultaneous realization of all desired properties has not been achieved. A 330 nm thick metasurface with an area of 3 cm 2 is e...

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Scalable, “Dip‐and‐Dry” Fabrication of a Wide‐Angle Plasmonic Selective Absorber for High‐Efficiency Solar–Thermal Energy Conversion

Cited by 126 publications

References 31 publications

Bioinspired Soot‐Deposited Janus Fabrics for Sustainable Solar Steam Generation with Salt‐Rejection

Bioinspired Soot‐Deposited Janus Fabrics for Sustainable Solar Steam Generation with Salt‐Rejection

Solar‐Thermal Driven Self‐Heating of Micro‐Supercapacitors at Low Temperatures

Large‐Area, Ultrathin Metasurface Exhibiting Strong Unpolarized Ultrabroadband Absorption

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