Silicon oxynitride multilayers as spectrally selective material for passive radiative cooling applications

Diatezua, D. M.; Thiry, P.A.; Dereux, Alain; Caudano, R.

doi:10.1016/0927-0248(95)00092-5

Cited by 45 publications

(16 citation statements)

References 9 publications

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“…In the present work, we focus our attention on the glassy dielectrics that are widely used in silicon integrated electronics, silicon nitride and silicon oxynitride. Their most prominent applications are: protective dielectric layers in certain microelectronic devices [1], antireflection coatings for silicon photovoltaics [2,3] and germanium solar cells [4], spectrally selective materials for remote sensing of the thermal performance of the object, and for passive radiative cooling [5][6][7]. In many of these applications the IR spectral region plays an important role.…”

Section: Introductionmentioning

confidence: 99%

Infrared Optical Constants and Dielectric Response Functions of Silicon Nitride and Oxynitride Films

Gunde

Maček

2001

phys. stat. sol. (a)

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The complex refractive indices of thick plasma-enhanced chemical vapour deposited silicon nitride and oxynitride films were determined within the infrared spectral region (4000-400 cm --1 , i.e. 2.5-25 mm) and used further to obtain their complex dielectric response functions. The imaginary part, i.e. the so-called energy-loss-function was analysed to get accurate phonon data of the amorphous layer. This way, TO-phonon frequencies, half-widths, and intensities of characteristic infrared absorptions were determined for each film. The dependence of the obtained data upon the variation of chemical/physical structure of the amorphous lattice was discussed.

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Section: Introductionmentioning

confidence: 99%

Infrared Optical Constants and Dielectric Response Functions of Silicon Nitride and Oxynitride Films

Gunde

Maček

2001

phys. stat. sol. (a)

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“…The temperature of the 6.5-µm-thick film and 13.5-µm-thick film achieved an average 0.82 • C and 0.44 • C temperature drop below the ambient air temperature. A similar study using silicon oxynitride was conducted by Diatezua et al [62] and a sub-ambient temperature was predicted. SiO 2 and SiC are also candidates for radiative cooling as their phonon resonances lead to high IR emission.…”

Section: Selective Coolersmentioning

confidence: 68%

Recent Progress in Daytime Radiative Cooling: Is It the Air Conditioner of the Future?

2018

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Radiative cooling is a well-researched area. For many years, surfaces relying on radiative cooling failed to exhibit a sub-ambient surface temperature under the sun because of the limited reflectance in the solar spectrum and the reduced absorptivity in the atmospheric window. The recent impressive developments in photonic nanoscience permitted to produce photonic structures exhibiting surface temperatures much below the ambient temperature. This paper aims to present and analyze the main recent achievements concerning daytime radiative cooling technologies. While the conventional radiative systems are briefly presented, the emphasis is given on the various photonic radiative structures and mainly the planar thin film radiators, metamaterials, 2 and 3D photonic structures, polymeric photonic technologies, and passive radiators under the form of a paint. The composition of each structure, as well as its experimental or simulated thermal performance, is reported in detail. The main limitations and constraints of the photonic radiative systems, the proposed technological solutions, and the prospects are presented and discussed.

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“…Some other materials including polyvinyl-fluoride plastic film and silicon monoxide film on aluminum also show good performance as selective emitters [3][4]. The second approach is to use periodic nanostructures [5][6][7][8][9] including photonic crystals and metamaterials due to the advancements of fabrication technologies in recent years. A daytime radiative cooler was proposed to have a good cooling performance by numerical simulation [8].…”

Section: Introductionmentioning

confidence: 99%

Nanoparticle embedded double-layer coating for daytime radiative cooling

Huang

Ruan

2017

International Journal of Heat and Mass Transfer

372

166

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Radiative cooling is a passive cooling method by emitting heat to outer space without energy input. In this work we propose a cost effective double-layer coating embedded with nanoparticles for both nighttime and daytime radiative cooling. The top and bottom layers are acrylic resin embedded with titanium dioxide and carbon black particles, respectively responsible for reflecting the solar irradiation and emitting the heat in the atmospheric transparency window. The carbon black layer is considered as the black substrate. For the top layer, different sizes of titanium dioxide particles are examined, and 0.2 µm radius is found to give the best cooling performance. More than 90% of the solar irradiation can be reflected, and the average emissivity in the atmospheric transparency window is larger than 0.9 in most directions. A daytime net cooling power over 100 W/m 2 is predicted at the ambient temperature. The cooling effect persists even if significant conduction and convection heat exchange is considered.

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Silicon oxynitride multilayers as spectrally selective material for passive radiative cooling applications

Cited by 45 publications

References 9 publications

Infrared Optical Constants and Dielectric Response Functions of Silicon Nitride and Oxynitride Films

Infrared Optical Constants and Dielectric Response Functions of Silicon Nitride and Oxynitride Films

Recent Progress in Daytime Radiative Cooling: Is It the Air Conditioner of the Future?

Nanoparticle embedded double-layer coating for daytime radiative cooling

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