Optimization of TiAlN/TiAlON/Si3N4 solar absorber coatings

An, Liqiong; Ali, Syed Talat; Søndergaard, Thomas; Nørgaard, J.; Tsao, Yao-Chung; Pedersen, Kjeld

doi:10.1016/j.solener.2015.05.042

Cited by 20 publications

(2 citation statements)

References 28 publications

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“…Thus, the absorbance was higher than 90% through the whole visible wavelength range. The extremely high absorbance obtained with Pistia stratiotes and Phanera purpurea leaves are comparable with other absorbers 16,17,[19][20][21] . Therefore, it is possible to conclude that the copper-coated Phanera purpurea and Pistia stratiotes leaves are good candidates for being applied as the light absorbers in the visible, near infrared, and infrared wavelength regions.…”

Section: Resultssupporting

confidence: 76%

Bio-inspired broadband absorbers induced by copper nanostructures on natural leaves

Dao

Pham

Nguyen

et al. 2020

Sci Rep

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& tien thanh pham 1* in this work, two copper-based biometamaterials were engineered using leaves of water cabbage (Pistia stratiotes) and purple bauhinia (Phanera purpurea) as templates. the copper sputtering was implemented to produce a thin copper film on the surface of leaves. The scanning electron microscopy (SeM) images exhibited the root hair-like nanostructure of water cabbage leaf and single comb-like nanostructure of purple bauhinia leaf. in spite of copper coating, the leaf surfaces of water cabbage and purple bauhinia were black and exhibited excellent light absorption at visible and near infrarrred wavelengths. It was estimated that these two types of leaves could absorb roughly 90% of light. Finite-difference time-domain (FDTD) calculations predicted the low reflectance stemming from the leaf nanostructures and copper coating layer. Because of the low cost of copper as a coating metal and simple procedure, this can be a promising method for quick fabrication of a thin copper film on the leaf nanostructure for application in blackbody or as the light absorbers.

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Section: Resultssupporting

confidence: 76%

Bio-inspired broadband absorbers induced by copper nanostructures on natural leaves

Dao

Pham

Nguyen

et al. 2020

Sci Rep

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“…The use of two absorbing layers allows the absorption of solar radiation through the materials intrinsic absorption and by phase interference. This can be achieved using a double cermet (Antonaia et al, 2010;Farooq and Hutchins, 2002;Wäckelgård et al, 2015;Zhang et al, 1996;, where the metal volume fraction is used to adjust the refractive index and extinction coefficient of each layer, or by a layer structure based on two different materials with adequate optical constants, which can be, for example, those based on transition metal nitride/oxynitride or carbide/nitride layers Du et al, 2011;An et al, 2015;Rebouta et al, 2012;Feng et al, 2015;Usmani and Dixit, 2016).…”

Section: Introductionmentioning

confidence: 99%

Optical and structural analysis of solar selective absorbing coatings based on AlSiOx:W cermets

et al. 2017

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a b s t r a c tIt is reported in this work the development and study of the optical and structural properties of a solar selective absorber cermet based on AlSiO x :W. A four-layer composite film structure, W/AlSiO x :W(HA)/ AlSiO x :W(LA)/AlSiO x , was deposited on stainless steel substrates using the magnetron sputtering deposition method. Numerical calculations were performed to simulate the spectral properties of multilayer stacks with varying metal volume fraction cermets and film thickness. The chemical analysis was performed using X-ray photoelectron spectroscopy and the results show that in the high metal volume fraction cermet layer, AlSiO x :W(HA), about one third of W atoms are in the W 0 oxidation state, another third in the W x+ oxidation state and the last third in the W 4+ , W 5+ and W 6+ oxidation states. The X-ray diffractograms of AlSiO x :W layers show a broad peak indicating that both, W and AlSiO x , are amorphous. These results indicate that this film structure has a good spectral selective property that is suitable for solar thermal applications, with the coatings exhibiting a solar absorptance of 94-95.5% and emissivities of 8-9% (at 100°C) and 10-14% (at 400°C). The samples were subjected to a thermal annealing at 450°C, in air, and 580°C, in vacuum and showed very good oxidation resistance and thermal stability. Morphological characterizations were carried out using scanning electron microscopy and atomic force microscopy. Rutherford Backscattering experiments were also performed to analyze the tungsten depth profile.

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Optical Properties of Solar Absorber Materials and Structures

Zang

Zhang

et al. 2021

Topics in Applied Physics

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Optimization of TiAlN/TiAlON/Si3N4 solar absorber coatings

Cited by 20 publications

References 28 publications

Bio-inspired broadband absorbers induced by copper nanostructures on natural leaves

Bio-inspired broadband absorbers induced by copper nanostructures on natural leaves

Optical and structural analysis of solar selective absorbing coatings based on AlSiOx:W cermets

Optical Properties of Solar Absorber Materials and Structures

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