Reassessment of different antireflection coatings for crystalline silicon solar cell in view of their passive radiative cooling properties

Kumar, Avinash

doi:10.1016/j.solener.2019.03.060

Cited by 31 publications

(13 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[43][44][45] Anti-reflective coatings are a particularly interesting application because of the possibility employing the optical refrigeration properties of NaYF to actively cool the surface. 26,46 In preliminary experiments we observe optical refrigeration of the NaYF gel when doped with 10% ytterbium. Our measurements of this gel indicate that it can be laser cooled by approximately 0.55°C and it does not heat under laser irradiation (Figure S7), indicating that it may be a good candidate for actively-cooled anti-reflective coatings, especially due to its lack of organic ligands on the surface, as the effective cooling efficiency of a nanocrystal is reduced by the heating of organic species on the surface 47,48 .…”

Section: Resultsmentioning

confidence: 94%

Multi-Step Crystallization and Chemical Evolution of Sodium Yttrium Fluoride

Pauzauskie

Bard

Felsted

et al. 2021

Preprint

View full text Add to dashboard Cite

Two-step crystallization mechanisms based on spinodal decomposition followed by nucleation are commonly observed both in the laboratory and in nature. While this pathway may require chemical reactions, subsequent nucleation and growth are often considered as separate, discrete events from the reaction itself. Recent work has also shown a distinct intermediate step involving the formation of an amorphous aggregate. Here we report a novel four-step mechanism in the aqueous synthesis of sodium yttrium fluoride involving 1) the segregation of aqueous ions into a dense liquid phase, 2) the formation of an amorphous aggregate, 3) nucleation of a cubic YF3 phase, and 4) subsequent solid-state diffusion of sodium and fluoride ions to form a final NaYF4 phase. The final step involves a continuous, gradual change of the solid phase’s chemical stoichiometry from YF3 toward NaYF4. Unlike previously studied nucleation and growth mechanisms, the stoichiometry of the final solid phase evolves throughout the crystallization process rather than being determined at nucleation. This novel four-step mechanism provides a new perspective into the nucleation and growth of many other crystalline materials given the ubiquity of nonstoichiometric compounds in nature.

show abstract

Section: Resultsmentioning

confidence: 94%

Multi-Step Crystallization and Chemical Evolution of Sodium Yttrium Fluoride

Pauzauskie

Bard

Felsted

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…25. Specific design of radiative cooler, [43] The evaluation of different antireflection coatings for the thermal management of silicon solar cells was reported in work [44]. Thin film materials were used as coatings such as Al 2 O 3 , Si 3 N 4 , SiO 2 , HfO 2 , et., in the modelling approach.…”

Section: Radiative Coolingmentioning

confidence: 99%

THERMAL MANAGEMENT OF SILICON PHOTOVOLTAIC PANELS: A REVIEW (In the press)

Nižetić¹

2020

REFFIT

View full text Add to dashboard Cite

Photovoltaic (PV) technologies represent a key role in the ongoing energy transition towards the decarbonisation of convectional power systems and to reduce the harmful population impact to environment. Nowadays, the majority of market available photovoltaic PV technologies are silicon based with a usual energy conversion efficiency of less than 20%. The major drawbacks of the widely used silicon PV technologies are related to performance degradation due to aging as well as performance drops that occur during periods of elevated operating temperatures. In order to improve performance, as well as the lifetime of the PV systems, various cooling techniques have been investigated in the last two decades. The main goal of the specific cooling approaches for PV panels is to ensure efficient thermal management, as well as economic suitability. In this review paper, different cooling strategies are categorized, discussed and thoroughly elaborated in order to provide deep insight related to an expected performance improvement and economic viability. The main results of this review indicate that the cooling approaches for PVs can ensure a performance improvement ranging from about 3% up to 30%, depending if passive or active cooling approaches are applied. The main results also indicate that the economic viability as well as environmental suitability of the specific cooling approaches is not sufficiently discussed in the existing research literature.

show abstract

“…The energy conversion efficiency of PV cells decreases with the increase of temperature at a typical value of −0.5%/K. Passive radiative cooling is promising for reducing thermal heating and thereby achieving enhanced efficiency and sustainable performance in low-band-gap PV devices. ,,− In principle, passive radiative cooling maximizes the emission of infrared (IR) thermal radiation in the atmospheric transparency window, along with the minimum absorption of solar light beyond this range. The efficiency of PV devices can be increased by thermally managing excessive heating in the nanometric dimension while using a potential low-band-gap semiconductor material such as a GaSb cell (Δ E = 0.72 eV or 1722 nm). , Daytime passive cooling requires that the surface of a device be covered with a layer of structured nanomaterial thin film that can simultaneously transmit the light in the visible spectrum and emit the heated thermal energy as an IR radiation in the primary and secondary atmospheric windows (8–13 μm and 4, 5, 18–23 μm, respectively) .…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Efficiency of GaSb Photovoltaic Cell Using Thin-Film Multiscale Haze and Radiative Cooling

Gupta

Kim

et al. 2021

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

In this work, a multiscale thin-film membrane of self-aggregated anodized aluminum oxide (AAO) nanowire structure was developed to enhance the efficiency of GaSb photovoltaic (PV) cell using both optical haze and passive radiative-cooling effects in a broad region of the solar spectrum. We controlled, (1) the optical properties of thin-film AAO and (2) the plasmonic-induced perfect absorption/emission by changing packing densities and lengths of AAO nanowires during the anodization and wet etching processes. The AAO nanowire structures provide 98% absorption/emission in the environmental emission/transmission window (8–13 μm), resulting in efficient passive self-cooling and higher-order optical haze transmission up to approximately 98%; privileged characteristics enhance the suppressed PV efficiency due to the unwanted reflection of incident light and excessive heating effects caused by low- and high-energy photons unused by the band gap of the cell. By integrating this thin-film nanowire structure membrane with the front surface of the GaSb cell, we achieved an overall increase in efficiency of 18% in contrast with a bare cell.

show abstract

Reassessment of different antireflection coatings for crystalline silicon solar cell in view of their passive radiative cooling properties

Cited by 31 publications

References 47 publications

Multi-Step Crystallization and Chemical Evolution of Sodium Yttrium Fluoride

Multi-Step Crystallization and Chemical Evolution of Sodium Yttrium Fluoride

THERMAL MANAGEMENT OF SILICON PHOTOVOLTAIC PANELS: A REVIEW (In the press)

Enhancing the Efficiency of GaSb Photovoltaic Cell Using Thin-Film Multiscale Haze and Radiative Cooling

Contact Info

Product

Resources

About