Design and characterization of solar absorbing multilayer stack based on Al/ Cr-N-O / SiO2 layers

Liu, Jing; Zhiqiang, Sun; Wang, Hong

doi:10.1016/j.solmat.2018.06.013

Cited by 11 publications

(4 citation statements)

References 15 publications

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“…Note that the selected working temperature is close to ideal. The reflectance in the visible region is close to zero, and it has a high reflectance in the wavelength range of 1300-2500 nm (near infrared and infrared region), which is consistent with the change trend of SSAC coatings prepared by conventional methods [7]. According to the whole reflectance from 300 nm to 2500 nm, the calculated solar absorption is 92.68, 93.43, 93.32.…”

Section: Chemical Potentialsupporting

confidence: 78%

“…The SSAC with excellent performance is the core to realize the high efficiency thermal conversion of solar energy [5]. The ideal SSAC requires high solar absorptance (α) in 300-2500 nm and low emittance (ε) [6,7]. With the continuous expansion of solar-thermal applications, the working temperature of solar collectors continues to increase [8,9], and the thermal stability requirements of coatings at high temperatures are constantly increasing.…”

Section: Introductionmentioning

confidence: 99%

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Thermal Stability of Chromium-Iron Oxidation Mixture Cermet-Based Solar Selective Absorbing Coatings

Zhang

et al. 2020

Molecules

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The solar selective absorber coating (SSAC) are at the core of the efficient solar-thermal system. In this paper, for the first time, the Chromium-iron oxidation mixture cermet was successfully prepared on the surface of ultra-pure ferritic stainless steel by chemical coloring as SSAC. The coating surface has an optical trap structure, and the chromium-iron oxidation mixture cermet is used as an absorption layer to realize solar-thermal conversion. The solar absorptance (AM1.5) of the coating reached 93.66, and the thermal emittance was less than 13. After thermal shock tests at 25/300 °C done 32 times (accumulated 812.8 h), the Performance Criterion (PC) of the coating was 0.01375 < 0.05, showing outstanding thermal stability.

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Section: Chemical Potentialsupporting

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Thermal Stability of Chromium-Iron Oxidation Mixture Cermet-Based Solar Selective Absorbing Coatings

Zhang

et al. 2020

Molecules

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“…When the PC value is higher than 0.05, it means that the SSAC has failed . Although the PC value is originally applied to evaluate the long-term stability of the SSAC used for the domestic hot water system after serving for 1 year (thousands of hours), it is now widely employed to assess the thermal stability of the SSAC used for the high-temperature CSP after the short-term accelerated ageing test at high temperatures. ,− Moreover, several works have employed the PC value to assess the thermal stability of the SSACs after heat treatment below 200 h. , Hence, it is still acceptable to roughly evaluate the WN x -Si 3 N 4 SSAC’s thermal stability according to the PC value although 200 h is not very long. The calculated PC values of the WN x -Si 3 N 4 SSAC after the heat treatments at 600 and 650 °C are 0.013 and 0.006, respectively, which are far less than 0.05.…”

Section: Results and Discussionmentioning

confidence: 99%

Optical Performance, Thermal Stability, and Failure Analysis of the WN_x-Si₃N₄ Multilayer Solar Selective Absorbing Coatings

Sun

Wang

Sun

et al. 2022

ACS Appl. Energy Mater.

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The development of high-temperature-tolerance solar selective absorbing coatings (SSACs) is beneficial to improve the conversion efficiency of concentrated solar power. In the present work, a TiN/Mo/WN x -Si 3 N 4 bilayer/SiO 2 cermet-based SSAC was developed, which was deposited on different substrates by magnetron sputtering. The designed WN x -Si 3 N 4 SSAC exhibits a high solar absorptivity of 0.952, accompanied by a relatively low emissivity of 0.059 at 25 °C and 0.134 deduced at 600 °C. Moreover, the WN x -Si 3 N 4 SSAC deposited on a stainless-steel (SS) substrate shows great thermal stability at 650 °C in vacuum. The solar absorptivity shows a slight decrease from 0.952 to 0.939 and the emissivity at 25 °C decreases from 0.059 to 0.045 after being annealed at 650 °C in vacuum. Furthermore, when being annealed at 700 °C in vacuum, the WN x -Si 3 N 4 SSAC deposited on the quartz glass substrate still keeps stable, but the coating on the SS substrate is dramatically destroyed. A comprehensive failure analysis was conducted utilizing FT-IR, SEM, Raman, and XPS characterizations. The degradation of the WN x -Si 3 N 4 SSAC deposited on the SS substrate at 700 °C is caused by the severe elemental diffusion between the absorbing layers and the antireflection layer. Moreover, the cracks induced by the thermal stress provide rapid channels for elemental diffusion.

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“…With the deep research on metamaterial and surface plasmon, wideband absorbers with excellent spectral selectivity and insensitivity to polarization and incidence angle have been proposed one by one [3][4][5][6][7], which is expected to be applied in the design of solar absorbers. Further, kinds of solar spectrally selective absorber structures such as multilayer metal/insulator/metal structure [8][9][10][11][12], fishnet gratings [13][14][15][16], moth eye [17][18][19], and ring structure [20][21][22][23] have been studied for solar thermal absorption.…”

Section: Introductionmentioning

confidence: 99%

Ultra-Broadband Spectrally Selective Absorber for Solar Thermal Absorption Based on TiN Square-Ring Meta-Structure

Gao

et al. 2023

IEEE Photonics J.

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Based on the TiN square-ring structure, a spectrally selective absorber for solar thermal absorption is proposed announcing an average absorption of 95.69% in the major solar spectral region (280nm~2500nm). When the wavelength exceeds 2500nm, the absorption declines rapidly and decreases to 40.4% at the wavelength of 4000nm, showing excellent spectral selectivity. As the incident angle of TE or TM polarized wave varies in a range of 0~60 degrees, the proposed absorber maintains more than 90% solar absorption efficiency, which proves the insensitivity of incident angle and polarization angle. With operating temperature T=300K and solar concentrating coefficient C=1, the solar-thermal conversion efficiency of the proposed absorber is 93.92%. At a high temperature of 700℃, the solar-thermal conversion efficiency can maintain more than 80% at the condition of C=200, demonstrating good thermal tolerance. It is believed that the proposed absorber has great potential to be applied in solar thermal absorption systems.

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Design and characterization of solar absorbing multilayer stack based on Al/ Cr-N-O / SiO2 layers

Cited by 11 publications

References 15 publications

Thermal Stability of Chromium-Iron Oxidation Mixture Cermet-Based Solar Selective Absorbing Coatings

Thermal Stability of Chromium-Iron Oxidation Mixture Cermet-Based Solar Selective Absorbing Coatings

Optical Performance, Thermal Stability, and Failure Analysis of the WN_x-Si₃N₄ Multilayer Solar Selective Absorbing Coatings

Ultra-Broadband Spectrally Selective Absorber for Solar Thermal Absorption Based on TiN Square-Ring Meta-Structure

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Design and characterization of solar absorbing multilayer stack based on Al/ Cr-N-O / SiO2 layers

Cited by 11 publications

References 15 publications

Thermal Stability of Chromium-Iron Oxidation Mixture Cermet-Based Solar Selective Absorbing Coatings

Thermal Stability of Chromium-Iron Oxidation Mixture Cermet-Based Solar Selective Absorbing Coatings

Optical Performance, Thermal Stability, and Failure Analysis of the WNx-Si3N4 Multilayer Solar Selective Absorbing Coatings

Ultra-Broadband Spectrally Selective Absorber for Solar Thermal Absorption Based on TiN Square-Ring Meta-Structure

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Optical Performance, Thermal Stability, and Failure Analysis of the WN_x-Si₃N₄ Multilayer Solar Selective Absorbing Coatings