Enhanced spectral selectivity through the quasi-optical microcavity based on W-SiO2 cermet

Wu, Zuoxu; Liu, Yijie; Wei, Dong; Yin, Li; Bai, Fengxian; Liu, Xingjun; Zhang, Qian; Cao, Feng

doi:10.1016/j.mtphys.2019.03.003

Cited by 30 publications

(30 citation statements)

References 39 publications

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“…The absorbing film here is made of side-by-side ceramic TiN NPs, instead of multilayer composites of ceramic matrix and metal NPs in cermet-based abso rbers. [18][19][20]35,36,45,47] Due to the absence of oxygen-rich matrices and the use of robust TiN NPs, the simplified but rational structure effectively avoids oxidation of NPs at high temperatures in vacuum, enabling a wider operation temperature range.…”

Section: Doi: 101002/adma202005074mentioning

confidence: 99%

Solution‐Processed All‐Ceramic Plasmonic Metamaterials for Efficient Solar–Thermal Conversion over 100–727 °C

Lin

et al. 2020

Advanced Materials

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 ε 100 C of 4-10%, as well as thermal stability below 500 °C, [9,10,14-17] which can hardly satisfy the requirements of Low-cost and large-area solar-thermal absorbers with superior spectral selectivity and excellent thermal stability are vital for efficient and large-scale solar-thermal conversion applications, such as space heating, desalination, ice mitigation, photothermal catalysis, and concentrating solar power. Few state-of-the-art selective absorbers are qualified for both low-(<200 °C) and high-temperature (>600 °C) applications due to insufficient spectral selectivity or thermal stability over a wide temperature range. Here, a high-performance plasmonic metamaterial selective absorber is developed by facile solutionbased processes via assembling an ultrathin (≈120 nm) titanium nitride (TiN) nanoparticle film on a TiN mirror. Enabled by the synergetic in-plane plasmon and out-of-plane Fabry-Pérot resonances, the all-ceramic plasmonic metamaterial simultaneously achieves high, full-spectrum solar absorption (95%), low mid-IR emission (3% at 100 °C), and excellent stability over a temperature range of 100-727 °C, even outperforming most vacuum-deposited absorbers at their specific operating temperatures. The competitive performance of the solution-processed absorber is accompanied by a significant cost reduction compared with vacuum-deposited absorbers. All these merits render it a cost-effective, universal solution to offering high efficiency (89-93%) for both low-and high-temperature solar-thermal applications.

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Section: Doi: 101002/adma202005074mentioning

confidence: 99%

Solution‐Processed All‐Ceramic Plasmonic Metamaterials for Efficient Solar–Thermal Conversion over 100–727 °C

Lin

et al. 2020

Advanced Materials

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“…The sophisticated optical design may hold promise in maximizing the material's advantages at high temperatures. Wu et al raised a QOM structure based on W-SiO 2 cermet, which can enable the near-perfect light absorption by the interaction of multiple absorption mechanisms (Wu et al, 2019). However, the stable operating temperature is only 600 o C. It is a feasible way to enhance the working temperature through incorporating the UHTCs in the QOM structure.…”

Section: Introductionmentioning

confidence: 99%

An Ultra-High Temperature Stable Solar Absorber Using the ZrC-Based Cermets

Wang

Liu

et al. 2021

Front. Energy Res.

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Exploring the spectrally selective absorbers with high optical performance and excellent thermal stability is crucial to improve the conversion efficiency of solar energy to electricity in concentrated solar power (CSP) systems. However, there are limited reports on the selective solar absorbers utilized at 900oC or above. Herein, we developed a selective absorption coating based on the ultra-high temperature ceramic ZrC and the quasi-optical microcavity (QOM) optical structure, and experimentally achieved the absorber via depositing an all-ceramic multilayer films on a stainless steel substrate by magnetron sputtering. The prepared multi-layer selective absorber demonstrates an excellent high solar absorptance of ∼0.964 due to the multi absorptance mechanisms in the QOM, and a relatively low thermal emittance of ∼0.16 (82°C). Moreover, the coating can survive at 900oC in vacuum for 100 h with a superior spectral selectivity of 0.96/0.143 (82°C) upon annealing, resulting from the introduction of ultra-high temperature ceramic ZrC in the QOM structure. Under the conditions of a stable operating temperature of 900°C and a concentration ratio of 1,000 suns, the calculated ideal conversion efficiency using this absorber can reach around 68%, exceeding most solar selective absorbers in previous reports.

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“…According to previous reports and our work, the α-W at the surface would be transformed into β-W after combination with oxides, accompanied by the change of lattice parameters. [17,[31][32][33][34] The influence of this phase transition on the performance of the coating is rarely reported. Considering that the β-W phase has comparatively smaller density, the phase transition in limited area may result in internal stress, which would be the incentive of destruction of coatings at high temperature.…”

Section: Introductionmentioning

confidence: 99%

“…An interesting fact is that seldom is the literature focused on W-SiO 2 ceramic composite coatings. Sakurai et al reported a computational design for a high-temperature SSA based on W-SiO 2 cermet, which predicted good solar performance at 1000 K. [35] Wu et al prepared a hybrid structure SSA based on W-SiO 2 /W/W-SiO 2 and it performed stably in vacuum at 600 C. [32] Nevertheless, no one has studied the survivability and failure mechanism of a W-SiO 2 ceramic composite SSA in air atmosphere, not to mention the specific roles of phase transition and internal stress in the failure process. Herein, we prepared a W-SiO 2 -based SSA by cosputtering of W and SiO 2 by magnetron sputtering equipment (MSIB-6000, Beijing jinshengweina Technology Co., Ltd).…”

Section: Introductionmentioning

confidence: 99%

Stress‐Induced Failure Study on a High‐Temperature Air‐Stable Solar‐Selective Absorber Based on W–SiO₂ Ceramic Composite

et al. 2020

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A stress‐induced failure study on a high‐temperature air‐stable ceramic composite solar selective absorber (SSA) based on a W–SiO2 system is reported. The as‐prepared SSA exhibits excellent spectral and structural stability after annealing in air at 500 °C for 36 h, proving its thermal stability against air corrosion. However, once the temperature is elevated to 600 °C, optical performance degradation and coating cracking happens. The X‐ray diffraction (XRD) patterns reveal that an O‐induced phase transition process from α‐W to β‐W occurs at the interface between the W IR reflector and W–SiO2 layer during deposition. The phase transition induces immense internal stress, which becomes the incentive of crack generation. Further increasing the annealing temperature, drastic structural changes of oxidized W become the driving force for crack propagation and hole expansion, leading to a failure analogous to a volcanic eruption. To improve the temperature limit of coating, a Ni–SiO2 stress buffer layer is introduced and successfully reduces the internal stress through Ni atom substitution for W atoms. Therefore, the optimized SSA keeps stable at 600 °C and the cracking temperature increases to 650 °C. These results suggest that the W–SiO2‐based SSA is a good candidate for air‐stable high‐temperature solar thermal conversion.

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Enhanced spectral selectivity through the quasi-optical microcavity based on W-SiO2 cermet

Cited by 30 publications

References 39 publications

Solution‐Processed All‐Ceramic Plasmonic Metamaterials for Efficient Solar–Thermal Conversion over 100–727 °C

Solution‐Processed All‐Ceramic Plasmonic Metamaterials for Efficient Solar–Thermal Conversion over 100–727 °C

An Ultra-High Temperature Stable Solar Absorber Using the ZrC-Based Cermets

Stress‐Induced Failure Study on a High‐Temperature Air‐Stable Solar‐Selective Absorber Based on W–SiO₂ Ceramic Composite

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Enhanced spectral selectivity through the quasi-optical microcavity based on W-SiO2 cermet

Cited by 30 publications

References 39 publications

Solution‐Processed All‐Ceramic Plasmonic Metamaterials for Efficient Solar–Thermal Conversion over 100–727 °C

Solution‐Processed All‐Ceramic Plasmonic Metamaterials for Efficient Solar–Thermal Conversion over 100–727 °C

An Ultra-High Temperature Stable Solar Absorber Using the ZrC-Based Cermets

Stress‐Induced Failure Study on a High‐Temperature Air‐Stable Solar‐Selective Absorber Based on W–SiO2 Ceramic Composite

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Stress‐Induced Failure Study on a High‐Temperature Air‐Stable Solar‐Selective Absorber Based on W–SiO₂ Ceramic Composite