Optimization and preparation of Pt–Al2O3 double cermet as selective solar absorber coatings

Nuru, Z.Y.; Motaung, D.E.; Kaviyarasu, K.; Mâaza, M.

doi:10.1016/j.jallcom.2015.12.201

Cited by 54 publications

(10 citation statements)

References 40 publications

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“…Similarly, due to promising properties like strong absorption in the visible region, which occurs because of surface plasmon resonance phenomena, also known as quantum confinement effect, nanocermets are becoming more suitable candidates for the purpose of solar energy absorption. Pt-Al 2 O 3 double cermet coating using molybdenum metal as an IR reflector would be a significant example for the potentially best suited cermet-based coatings, which show improved optical properties, viz., solar absorptance of 0.97 and thermal emittance of 0.05 [80]. Another outstanding attempt for producing a novel coating based on two different types of coatings, e.g., textured surfaces and cermet composites, have been made in the form of co-nanocylinders-Al 2 O 3 cermets coating [87].…”

Section: Discussionmentioning

confidence: 99%

“…In some cases, different materials are stacked over each other above the substrate in an optimized combination in order to achieve better optical and thermal properties. Various types of solar selective coatings on which recent research is being conducted are (a) dielectric-metal-dielectric (DMD) absorbers [78], (b) cermet composites [79][80][81], (c) multilayered absorbers [82][83][84], and (d) textured absorbers [85][86][87]. The details of these solar selective coatings are discussed in Sec.…”

Section: Active Photovoltaicmentioning

confidence: 99%

“…7(b). (iii) Cermet absorber [80,81,105]: Also known as "multidielectric composite coatings." It consists of a dielectric or ceramic matrix holding nanoscale metal particles.…”

Section: Advances In Solar Receiversmentioning

confidence: 99%

“…Furthermore, Nuru et al [80] studied the optical properties and thermal stability of a multilayer of Pt and Al 2 O 3 , as well as a single layer of Pt-Al 2 O 3 cermet. In this study, they concluded that the selection of Mo as the IR reflector material will enhance the solar spectral selectivity.…”

Section: Advances In Solar Receiversmentioning

confidence: 99%

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Technological Advances to Maximize Solar Collector Energy Output: A Review

Salvi

Bhalla

Taylor

et al. 2018

Journal of Electronic Packaging

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Since it is highly correlated with quality of life, the demand for energy continues to increase as the global population grows and modernizes. Although there has been significant impetus to move away from reliance on fossil fuels for decades (e.g., localized pollution and climate change), solar energy has only recently taken on a non-negligible role in the global production of energy. The photovoltaics (PV) industry has many of the same electronics packaging challenges as the semiconductor industry, because in both cases, high temperatures lead to lowering of the system performance. Also, there are several technologies, which can harvest solar energy solely as heat. Advances in these technologies (e.g., solar selective coatings, design optimizations, and improvement in materials) have also kept the solar thermal market growing in recent years (albeit not nearly as rapidly as PV). This paper presents a review on how heat is managed in solar thermal and PV systems, with a focus on the recent developments for technologies, which can harvest heat to meet global energy demands. It also briefs about possible ways to resolve the challenges or difficulties existing in solar collectors like solar selectivity, thermal stability, etc. As a key enabling technology for reducing radiation heat losses in these devices, the focus of this paper is to discuss the ongoing advances in solar selective coatings and working fluids, which could potentially be used in tandem to filter out or recover the heat that is wasted from PVs. Among the reviewed solar selective coatings, recent advances in selective coating categories like dielectric-metal-dielectric (DMD), multilayered, and cermet-based coatings are considered. In addition, the effects of characteristic changes in glazing, absorber geometry, and solar tracking systems on the performance of solar collectors are also reviewed. A discussion of how these fundamental technological advances could be incorporated with PVs is included as well.

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Section: Discussionmentioning

confidence: 99%

Section: Active Photovoltaicmentioning

confidence: 99%

“…7(b). (iii) Cermet absorber [80,81,105]: Also known as "multidielectric composite coatings." It consists of a dielectric or ceramic matrix holding nanoscale metal particles.…”

Section: Advances In Solar Receiversmentioning

confidence: 99%

Section: Advances In Solar Receiversmentioning

confidence: 99%

See 2 more Smart Citations

Technological Advances to Maximize Solar Collector Energy Output: A Review

Salvi

Bhalla

Taylor

et al. 2018

Journal of Electronic Packaging

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“…Solar selective designs of cermet based solar selective surface. Reprinted with permission from Ref [53]…”

mentioning

confidence: 99%

Solar selective performance of metal nitride/oxynitride based magnetron sputtered thin film coatings: a comprehensive review

Khalil

Taha

Rahman

et al. 2018

J. Opt.

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Since solar thermal collectors are considered to be the most direct way of converting the solar energy into the usable form, in the last few years growing attention has been paid to the development of transition metal nitride and metal oxynitride based thin film selective surfaces for solar-thermal collectors in order to harvest more solar energy. A solar-thermal energy system, generally, shows very high solar absorption of incident solar radiation from the solar-thermal collectors in the visible range (0.3 to 2.5 µm) and extremely low thermal losses through emission (or high reflection) in the infrared region (≥ 2.5 µm). The efficiency of a solar-thermal energy conversion system can be improved by the use of solar selective surfaces consisting of novel metallic nanoparticles surrounded in metal nitride/oxynitrides systems. In order to enhance the effectiveness of solar thermal devices, solar selective surfaces with high thermal stability are a prerequisite. Over the years, substantial efforts have been made in the field of solar selective surfaces to attain higher solar absorptance and lower thermal emittance at high temperature (above 400°C) applications. In this article, we review the present state-of-the-art transition metal nitride and/or oxynitrides based vacuum sputtered Page 1 of 36 AUTHOR SUBMITTED MANUSCRIPT-JOPT-104532.R1 nanostructured thin film coatings with respect to their optical and solar selective surface applications. We have also summarized the solar selectivity data from recent published literature investigations, including discussion on some potential applications for these materials.

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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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Optimization and preparation of Pt–Al2O3 double cermet as selective solar absorber coatings

Cited by 54 publications

References 40 publications

Technological Advances to Maximize Solar Collector Energy Output: A Review

Technological Advances to Maximize Solar Collector Energy Output: A Review

Solar selective performance of metal nitride/oxynitride based magnetron sputtered thin film coatings: a comprehensive review

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

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Optimization and preparation of Pt–Al2O3 double cermet as selective solar absorber coatings

Cited by 54 publications

References 40 publications

Technological Advances to Maximize Solar Collector Energy Output: A Review

Technological Advances to Maximize Solar Collector Energy Output: A Review

Solar selective performance of metal nitride/oxynitride based magnetron sputtered thin film coatings: a comprehensive review

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

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Product

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