Effective, angle-independent radiative cooler based on one-dimensional photonic crystal

Yuan, Huaxin; Yang, Chenying; Zheng, Xiaowen; Mu, Wen Ning; Wang, Zhen; Yuan, Weiyong; Zhang, Yueguang; Chen, Chaonan; Xu, Le; Shen, Weidong

doi:10.1364/oe.26.027885

Cited by 28 publications

(14 citation statements)

References 28 publications

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“…In addition, photonic structures with high visible-to-infrared (IR) radiation transparency and strong thermal emissivity have been reported, which is particularly useful for improved operation of solar panels 13,14 . These pioneering works demonstrated the potential to realize daytime radiative cooling with no electricity consumption [15][16][17][18][19][20] . This technology can be used to assist climate control in buildings and significantly reduce energy usage [21][22][23][24][25][26][27] .…”

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confidence: 99%

A polydimethylsiloxane-coated metal structure for all-day radiative cooling

et al. 2019

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Radiative cooling is a passive cooling strategy with zero consumption of electricity, and it can be used to radiate heat from buildings to reduce air conditioning requirements. Although this technology can work well during optimal atmospheric conditions at nighttime, it is essential to achieve efficient cooling during daytime when peak cooling demand actually occurs. In this article, we report an inexpensive planar polydimethylsiloxane (PDMS)/metal thermal emitter, i.e., a thin film structure, which was fabricated using a fast solution coating process that is scalable for large area manufacturing. By performing tests under different environmental conditions, temperature reductions of 9.5 °C and 11.0 °C were demonstrated in the laboratory and outdoor environment, respectively, with an average cooling power of ~120 W/m 2 for the thin film thermal emitter. In addition, a spectral-selective structure was designed and implemented to suppress the solar input and control the divergence of the thermal emission beam. This enhanced the directionality of the thermal emissions, so the emitter's cooling performance was less dependent on the surrounding environment. Outdoor experiments were performed in Buffalo NY realizing continuous allday cooling of 2~9 °C on a typical clear sunny day at Northern United States latitudes. This practical strategy that cools without electricity input could have a significant impact on global energy consumption.

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confidence: 99%

A polydimethylsiloxane-coated metal structure for all-day radiative cooling

et al. 2019

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“…Conversely, some researchers optimize the photonic structure proposed by Raman et al [6] to achieve higher emissivity in the atmospheric window. And Al 2 O 3 [16] or TiO 2 [29] was used to replace the HfO 2 layer, indeed with the reasonable optimization, they achieved the emissivity of 0.8 and 0.96 in the atmospheric window with the similar structure, respectively. However, the photonic structure loses the characteristic of selective emission.…”

Section: One Dimensional and 2d Photonic Structurementioning

confidence: 93%

“…When the feature size of photonic structure is close to the wavelength, the interference effect can tailor different spectral resonances to design the desired photonic radiative coolers. Planar multilayer 1D structure [6,24,29], multilayer 2D structure [18,30], metamaterial [31], and metasurface [32] can all achieve low sunlight absorption and high mid-infrared emission. By optimizing the planar 1D structure of materials (e.g.…”

Section: One Dimensional and 2d Photonic Structurementioning

confidence: 99%

“…2e). Perhaps, low density polyethylene can be the [33], 2D emitter (2013) [18], 1D emitter (2014) [6], metamaterial (MM) (2015) [31], polymer (2015) [17], 1D emitter (2016) [24], metasurface (2017) [32], MM (2017) [7], NPM (2017) [20], polymer (2017) [35], 2D emitter (2018) [30], polymer (2018) [8], NPM (2018) [21], metasurface (2018) [103], 1D emitter (2018) [29], Al 2 O 3 (2019) [36]. EH ¼ energy harvesting, CC ¼ cryogenic cooling, BC ¼ building cooling, PC ¼ photovoltaic cooling, NPM ¼ nanoparticle mixture material.…”

Section: Scalable Rc Materialsmentioning

confidence: 99%

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Advances and challenges in commercializing radiative cooling

Liu

Zhou

et al. 2019

Materials Today Physics

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Radiative cooling (RC) dissipates terrestrial heat to outer space through the atmospheric window, without external energy input and production of environmental pollutants. More and more efforts have been devoted to this clean promising cooling technology; thus diverse radiative coolers have emerged. However, the performance, cost, and effectiveness of various radiative coolers are not exactly the same. In addition, the large-scale application of RC technology is impeded by the low energy density, uncontrollable cooling power, and limited sky-facing area. Here, we critically review the recent progress of RC technology, evaluate the cooling performance of various radiative coolers, and discuss the challenges and feasible solutions to commercialize RC technology. Furthermore, valuable insights are provided to make new breakthroughs in this field.

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“…Then the surface temperature can be decreased below the ambient. Therefore, certain natural materials, such as polymeric materials, 15,16 titanium dioxide, [17][18][19] silicon nitrides, 20 and silicon-monoxide (SiO), 21 have potential for limited selectivity. But it is difficult to find out a simple bulk material with high emissivity and high reflectivity in the desirable spectrum range simultaneously.…”

Section: Introductionmentioning

confidence: 99%

Recent advances and progresses in photonic devices for passive radiative cooling application: a review

Goyal

Kumar

2020

J. Nanophoton.

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This review covers the recent progress made in the nanophotonic devices-based daytime passive radiative coolers. The radiative cooling capabilities along with the structural description of various natural species are discussed. The design principle along with key characteristics of the omnidirectional solar reflectors as well as thermal adiators is discussed in detail. Several analogues planner one-dimensional and two-dimensional photonic nanostructures and their current state-of-the-art techniques have been discussed. For each kind of the photonic structure, the novelty, measurement principle, and their respective daytime radiative cooling capability are presented. The reported works and the corresponding results predict the possibility to realize an efficient and commercially viable radiator for passive radiative cooling applications.

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Effective, angle-independent radiative cooler based on one-dimensional photonic crystal

Cited by 28 publications

References 28 publications

A polydimethylsiloxane-coated metal structure for all-day radiative cooling

A polydimethylsiloxane-coated metal structure for all-day radiative cooling

Advances and challenges in commercializing radiative cooling

Recent advances and progresses in photonic devices for passive radiative cooling application: a review

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