Effects of antireflection layers on the optical and thermal stability properties of a spectrally selective CrAlN–CrAlON based tandem absorber

Zou, Chen; Huang, Lingling; Wang, Jia; Xue, Shuwen

doi:10.1016/j.solmat.2015.02.010

Cited by 36 publications

(12 citation statements)

References 44 publications

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“…[ 109 ] Other metal nitrides and oxy‐nitrides, such as CrAlON, WAlON, NbAlON, TiAlN, TiSiN, and TiAlSiN, have also been reported as intrinsic materials for SSAs. [ 110–114 ]…”

Section: Mechanism and Recent Progress Of Ssasmentioning

confidence: 99%

Spectrally Selective Absorbers/Emitters for Solar Steam Generation and Radiative Cooling‐Enabled Atmospheric Water Harvesting

Lin

Huang

et al. 2020

Global Challenges

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Renewable energy harvesting from the sun and outer space have aroused significant interest over the past decades due to their great potential in addressing the energy crisis. Furthermore, the harvested renewable energy has benefited another global challenge, water scarcity. Both solar steam generation and passive radiative cooling‐enabled atmospheric water harvesting are promising technologies that produce freshwater in green and sustainable ways. Spectral control is extremely important to achieve high efficiency in the two complementary systems based on absorbing/emitting light in a specific wavelength range. For this reason, a broad variety of solar absorbers and IR emitters with great spectral selectivity have been developed. Although operating in different spectral regions, solar selective absorbers and IR selective emitters share similar design strategies. At this stage, it is urgent and necessary to review their progress and figure out their common optical characteristics. Herein, the fundamental mechanisms and recent progress in solar selective absorbers and IR selective emitters are summarized, and their applications in water production are reported. This review aims to identify the importance of selective absorbers/emitters and inspire more research works on selective absorbers/emitters through the summary of advances and the establishment of the connection between solar absorbers and IR emitters.

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“…[ 109 ] Other metal nitrides and oxy‐nitrides, such as CrAlON, WAlON, NbAlON, TiAlN, TiSiN, and TiAlSiN, have also been reported as intrinsic materials for SSAs. [ 110–114 ]…”

Section: Mechanism and Recent Progress Of Ssasmentioning

confidence: 99%

Spectrally Selective Absorbers/Emitters for Solar Steam Generation and Radiative Cooling‐Enabled Atmospheric Water Harvesting

Lin

Huang

et al. 2020

Global Challenges

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“…reported a CrAlN-CrAlON based tandem absorber that exhibited a high absorptance of 0.984 and a low emittance of 0.07 [22]. These studies suggest that if a coating is fabricated, while replacing the transition metal with tungsten, the desired spectral selectivity can be obtained.…”

Section: Introductionmentioning

confidence: 96%

Spectrally selective absorber coating of WAlN/WAlON/Al2O3 for solar thermal applications

Dan

Jyothi

Chattopadhyay

et al. 2016

Solar Energy Materials and Solar Cells

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A novel WAlN/WAlON/Al 2 O 3 coating was successfully deposited on stainless steel (SS) substrate using reactive DC and RF magnetron sputtering. Excellent spectrally selective property with a high absorptance of 0.958 in the solar spectrum region and low emittance of 0.08 in the infrared region were achieved by tailoring the target power, deposition time and the reactive flow rates of N 2 and O 2 . In the present solar selective coating, W layer acts as a back reflector and diffusion barrier, WAlN as the main absorber layer, WAlON as the semi-absorber layer, whereas the topmost Al 2 O 3 layer works as an anti-reflecting layer. In reference to the thermal stability, the absorber deposited on SS substrates exhibited high solar selectivity (α/ε) of 0.920/0.11, when heat treated in air up to 500°C for 2 hours. Taken together, the present study demonstrated that the WAlN/WAlON/Al 2 O 3 -based selective absorbing coating with excellent thermal stability could be a promising material for photo-thermal conversion at temperatures of up to 500°C.

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“…On the other hand, transition metal nitrides and oxynitrides based on structure are characterized by a good diffusion barrier, high resistance of oxidation and thermal stability [6,7,[9][10][11][12][13][14]. Several transition metals were already used, such as, Ti, Cr,W, Nb, Zr and Al [6,7,[9][10][11][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

The effect of increasing Si content in the absorber layers (CrAlSiNx/CrAlSiOyNx) of solar selective absorbers upon their selectivity and thermal stability

AL-Rjoub

Rebouta

Cunha

et al. 2019

Applied Surface Science

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In this work, the effect of increasing Si content in the absorber layers (CrAlSiN x /CrAlSiO y N x) of solar selective absorbers upon their selectivity and thermal stability are studied. The two optical stacks presented consist of four magnetron sputtered layers on stainless steel substrates. In both cases, tungsten is used as back-reflector, CrAlSi x N/CrAlSiO y N x as absorber layers with different Si/(Cr+Al+Si) atomic ratio (0.15 and 0.30, respectively) and finally the SiAlO x antireflection layer. The structures were theoretically designed by SCOUT software depended on experimental transmittance (T) and reflectance (R) of thin single layers deposited on glass substrates. It is observed that optical stack coatings with higher silicon content show better selectivity values, high solar absorptance, α= 95.9%, and low emissivity, ε= 9.7 % (calculated for 400 ºC), with higher thermal stability at 600 ºC in vacuum, for 650 h. Additionally, with the annealing at 600 ºC an increase of surface roughness was found, which was smaller for sample with higher Si content.

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Effects of antireflection layers on the optical and thermal stability properties of a spectrally selective CrAlN–CrAlON based tandem absorber

Cited by 36 publications

References 44 publications

Spectrally Selective Absorbers/Emitters for Solar Steam Generation and Radiative Cooling‐Enabled Atmospheric Water Harvesting

Spectrally Selective Absorbers/Emitters for Solar Steam Generation and Radiative Cooling‐Enabled Atmospheric Water Harvesting

Spectrally selective absorber coating of WAlN/WAlON/Al2O3 for solar thermal applications

The effect of increasing Si content in the absorber layers (CrAlSiNx/CrAlSiOyNx) of solar selective absorbers upon their selectivity and thermal stability

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