Performance analysis of enhanced radiative cooling of solar cells based on a commercial silicon photovoltaic module

Zhao, Bin; Hu, Mingke; Ao, Xianze; Pei, Gang

doi:10.1016/j.solener.2018.10.043

Cited by 104 publications

(58 citation statements)

References 24 publications

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“…Their results deviate from reality when one considers a complete silicon solar cell. 112 These studies show that PV researchers can shift their focus to other options of cooling, e.g. towards passive cooling techniques relying more on convection rather than radiative cooling.…”

Section: Research Area 2 Pv-based Intelligent Energy Agentsmentioning

confidence: 99%

Photovoltatronics: intelligent PV-based devices for energy and information applications

Ziar

Manganiello

Isabella

et al. 2021

Energy Environ. Sci.

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Section: Research Area 2 Pv-based Intelligent Energy Agentsmentioning

confidence: 99%

Photovoltatronics: intelligent PV-based devices for energy and information applications

Ziar

Manganiello

Isabella

et al. 2021

Energy Environ. Sci.

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“…Although several solar cell compatible radiative coolers have been proposed in the literature, most of them examine their impact on bare Si wafers and only a few studies exploit their impact on actual PV modules 5 , 11 , 42 , 43 , where the power-balance relation has to take into account also the transformation of part of the solar energy to electrical energy or its loss via other mechanisms 5 , 9 . Here we examine the impact of our nano-micro grating cooler on both the temperature and the efficiency of a realistic system, considering a crystalline silicon-based solar cell among the ones available in the market.…”

Section: Nano-micro-grating On Top Of a Realistic Pv Devicementioning

confidence: 99%

“…Promising material candidates for the realization of such coolers are glasses, such as silica or low iron soda-lime glass; it is mainly because of their ability to act as optically transparent and fairly acceptable, blackbody-like, thermal radiators due to their phonon-polariton resonance modes at mid-infrared (mid-IR) wavelengths 10 . Moreover, such materials offer simplicity and reliability/stability compared, for example, to highly-emissive polymers, like polydimethylsiloxane (PDMS) 11 . Due to the increased thermal load in solar cell devices, studies aim to further enhance such materials' emissivity 12 , usually by applying a photonic patterning resulting in a surface structuring in the micro-scale.…”

Section: Introductionmentioning

confidence: 99%

Combined nano and micro structuring for enhanced radiative cooling and efficiency of photovoltaic cells

Perrakis

Tasolamprou

Kenanakis

et al. 2021

Sci Rep

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Outdoor devices comprising materials with mid-IR emissions at the atmospheric window (8–13 μm) achieve passive heat dissipation to outer space (~ − 270 °C), besides the atmosphere, being suitable for cooling applications. Recent studies have shown that the micro-scale photonic patterning of such materials further enhances their spectral emissivity. This approach is crucial, especially for daytime operation, where solar radiation often increases the device heat load. However, micro-scale patterning is often sub-optimal for other wavelengths besides 8–13 μm, limiting the devices’ efficiency. Here, we show that the superposition of properly designed in-plane nano- and micro-scaled periodic patterns results in enhanced device performance in the case of solar cell applications. We apply this idea in scalable, few-micron-thick, and simple single-material (glass) radiative coolers on top of simple-planar Si substrates, where we show an ~ 25.4% solar absorption enhancement, combined with a ~ ≤ 5.8 °C temperature reduction. Utilizing a coupled opto-electro-thermal modeling we evaluate our nano-micro-scale cooler also in the case of selected, highly-efficient Si-based photovoltaic architectures, where we achieve an efficiency enhancement of ~ 3.1%, which is 2.3 times higher compared to common anti-reflection layers, while the operating temperature of the device also decreases. Besides the enhanced performance of our nano-micro-scale cooler, our approach of superimposing double- or multi-periodic gratings is generic and suitable in all cases where the performance of a device depends on its response on more than one frequency bands.

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“…Surfaces with low emissivity in the solar spectrum and high emissivity in the infrared are required to get maximum cooling power. This is the principle of the so-called daytime radiative cooling, which can be applied to PV cells [37][38][39]. For TPV devices, we propose to place the radiative cooler at the rear of the cell, facing the sky.…”

Section: Thermal Management Of the Tpv System With Conductive-convectmentioning

confidence: 99%

New insights into the thermal behavior and management of thermophotovoltaic systems

Blandre¹,

Vaillon²,

Drevillon³

2019

Opt. Express

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The thermal behavior of a thermophotovoltaic system composed of a metallodielectric spectrally selective radiator at high temperature and a GaSb photovoltaic cell in the far field is investigated. Using a coupled radiative, electrical and thermal model, we highlight that, without a large conductive-convective heat transfer coefficient applied to the cell, the rise in temperature of the photovoltaic cell induces dramatic efficiency losses. We then investigate solutions to mitigate thermal effects, such as radiative cooling or the decrease of the emissivity or the temperature of the radiator. Without extending the radiating area beyond that of the cell, gains by radiative cooling are marginal. However, for a given radiator temperature, decreasing its emissivity is beneficial to conversion efficiency and, in cases of limited conductive-convective cooling capacities, even leads to larger electrical power outputs. More importantly, for a realistic radiator structure made of tungsten and hafnium oxide, larger conversion efficiencies are reached with smaller radiator temperatures because thermal losses and thus needs for cooling are less.

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Performance analysis of enhanced radiative cooling of solar cells based on a commercial silicon photovoltaic module

Cited by 104 publications

References 24 publications

Photovoltatronics: intelligent PV-based devices for energy and information applications

Photovoltatronics: intelligent PV-based devices for energy and information applications

Combined nano and micro structuring for enhanced radiative cooling and efficiency of photovoltaic cells

New insights into the thermal behavior and management of thermophotovoltaic systems

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