Silicone optical elements for cost-effective freeform solar concentration

Cui, Sifang; Lyons, Nicholas P.; Diaz, Liliana Ruiz; Ketchum, Remington S.; Kim, Kyung Jo; Yuan, Hao; Frasier, Mike; Pan, Wei; Norwood, Robert A.

doi:10.1364/oe.27.00a572

Cited by 11 publications

(4 citation statements)

References 11 publications

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“…[ 117 ] Waveguide films manufactured using roll‐to‐roll UV‐NIL have been demonstrated with a concentration ratio of 4X. [ 118 ] Waveguide‐integrated SOEs have also been implemented with an optical efficiency of ≈67.5%, [ 119 ] and two examples can be seen in Figure .…”

Section: New Enabling Technologies For Micro Cpvmentioning

confidence: 99%

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Integrated Micro‐Scale Concentrating Photovoltaics: A Scalable Path Toward High‐Efficiency, Low‐Cost Solar Power

Jost

Juejun

et al. 2023

Solar RRL

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The global energy market is seeing increases in the electricity demand of a couple of percentage points annually. The photovoltaic (PV) industry is also growing rapidly every year. One of the PV technologies is concentrator photovoltaics (CPV). CPV uses high‐efficiency multijunction solar cells and optics to concentrate sunlight, thereby significantly reducing the amount of semiconductor material needed. Yet, due to the high upfont manufacturing cost of CPV, it currently does not offer a competitive price against silicon PV. With this a new branch is introduced to the industry, micro‐CPV, which can be broadly explained as the miniaturization of the solar cells and optical components. The motivation for micro‐CPV is lowering the cost by decreasing the material volume and enabling new system architectures and high‐throughput manufacturing methods, while still maintaining high electrical efficiencies, taking advantage of a lower thermal load, shorter optical paths, lower resistive losses, and lower material volumes. Herein, a comprehensive review of the technological advances is presented, key synergies between micro‐CPV and other industries sharing similar challenges are identified, exemplified by micro‐light emitting diodes display manufacturing. New assembly process development in these industries will facilitate commercial adoption of micro‐CPV with continued miniaturization while driving down the cost.

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Section: New Enabling Technologies For Micro Cpvmentioning

confidence: 99%

mentioning

confidence: 99%

Integrated Micro‐Scale Concentrating Photovoltaics: A Scalable Path Toward High‐Efficiency, Low‐Cost Solar Power

Jost

Juejun

et al. 2023

Solar RRL

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“…Under very high solar concentrations (>200 suns), photovoltaics are generally attractive because of their high power conversion efficiencies. Cui et al [11] report silicone optical elements as lightweight, compact, and cost-effective concentrator materials. Silicone materials as passive optical elements in solar concentrating systems can leverage freeform optical design to enhance throughput in a compact apparatus.…”

Section: Solar Energymentioning

confidence: 99%

Light, Energy and the Environment, 2018: introduction to the joint feature issue

et al. 2019

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This joint feature issue of Optics Express and Applied Optics highlights contributions from authors who presented their latest research at the OSA Light, Energy and the Environment Congress, held in Sentosa Island, Singapore from 5 to 8 November 2018. The joint feature issue comprises 11 contributed papers, which expand upon their respective conference proceedings. The published papers introduced here cover a broad range of timely research topics in optics and photonics for lighting and illumination, solar energy, hyperspectral imaging, and environmental sensing.

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“…These light sources require DUV-transparent optical components, including windows, coatings, and adhesives. Transparent organosilicates exhibit high chemical stability as well as unique physical and mechanical properties and are widely used as encapsulants of LEDs, , optical elements, , and microfluidic devices . Silsesquioxane (SQ; RSiO 3/2 ) units, where R represents an organic functional group, are important building blocks of organosilicates. − Their states of matter from solid to liquid and thermal response vary widely depending on the composition, topology, molar mass, and type of R groups.…”

Section: Introductionmentioning

confidence: 99%

Poly(cyclohexylsilsesquioxane)-Based Hydrophilic Thermoset-Resistant Deep-Ultraviolet-Transparent Glasses with Low Melting Temperatures

Kajihara

Suzuki

Seto

et al. 2023

ACS Appl. Mater. Interfaces

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Silsesquioxane (SQ)-based glasses with low melting temperatures were prepared by the cosolvent-free (solventless) hydrolytic polycondensation of organotrimethoxysilanes with cyclopentyl (c-Pe) and cyclohexyl (c-Hx) groups. Copolymers consisting of phenylsilsesquioxane (Ph-SQ) units and c-Pe-SQ units [poly(Ph-co-c-Pe-SQ)] or c-Hx-SQ units [poly(Ph-co-c-Hx-SQ)] were melted at 140 °C and formed clear glasses. The glasses prepared by this method contained many residual SiOH groups and exhibited high adhesive strength to microscope glass plates, metals, and several polymers. The glass-transition temperature of poly(c-Hx-SQ) was lower than that of poly(Ph-SQ) by only a small margin, whereas that of poly(c-Pe-SQ) was much lower. The poly(c-Hx-SQ)-based glasses were stiff at room temperature and transparent in the deep-ultraviolet spectral region (≲300 nm). They formed fragile melts with kinetic fragility parameters as high as ∼0.8. The melts of poly(c-Hx-SQ) and poly(c-Hx-co-Et-SQ) exhibited better resistance to thermal curing than that of poly(Ph-SQ) and maintained thermoplasticity even after heat treatment at 200 °C for 6 h.

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Silicone optical elements for cost-effective freeform solar concentration

Cited by 11 publications

References 11 publications

Integrated Micro‐Scale Concentrating Photovoltaics: A Scalable Path Toward High‐Efficiency, Low‐Cost Solar Power

Integrated Micro‐Scale Concentrating Photovoltaics: A Scalable Path Toward High‐Efficiency, Low‐Cost Solar Power

Light, Energy and the Environment, 2018: introduction to the joint feature issue

Poly(cyclohexylsilsesquioxane)-Based Hydrophilic Thermoset-Resistant Deep-Ultraviolet-Transparent Glasses with Low Melting Temperatures

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