scholarly journals Elliptic Array Luminescent Solar Concentrators for Combined Power Generation and Microalgae Growth

Energies ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 5229
Author(s):  
Nima Talebzadeh ◽  
Paul G. O’Brien
Keyword(s):  
Power Generation ◽  
Electric Power ◽  
Life Support ◽  
Optical Efficiency ◽  
Solar Concentrators ◽  
Algae Cultivation ◽  
Luminescent Solar Concentrators ◽  
High Emission ◽  
External Sources ◽  
Scattering Losses

The full utilization of broadband solar irradiance is becoming increasingly useful for applications such as long-term space missions, wherein power generation from external sources and regenerative life support systems are essential. Luminescent solar concentrators (LSCs) can be designed to separate sunlight into photosynthetically active radiation (PAR) and non-PAR to simultaneously provide for algae cultivation and electric power generation. However, the efficiency of LSCs suffers from high emission losses. In this work, we show that by shaping the LSC in the form of an elliptic array, rather than the conventional planar configuration, emission losses can be drastically reduced to the point that they are almost eliminated. Numerical results, considering the combined effects of emission, transmission and surface scattering losses show the optical efficiency of the elliptic array LSC is 63%, whereas, in comparison, the optical efficiency for conventional planar LSCs is 47.2%. Further, results from numerical simulations show that elliptic array luminescent solar concentrators can convert non-PAR and green-PAR to electric power with a conversion efficiency of ~17% for AM1.5 and 17.6% for AM0, while transmitting PAR to an underlying photobioreactor to support algae cultivation.

scholarly journals Waveguiding of Photoluminescence in a Layer of Semiconductor Nanoparticles

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 683
Author(s):  
Yera Ye. Ussembayev ◽  
Natalia K. Zawacka ◽  
Filip Strubbe ◽  
Zeger Hens ◽  
Kristiaan Neyts
Keyword(s):  
Current Knowledge ◽  
Liquid Crystal Displays ◽  
Semiconductor Nanoparticles ◽  
Shell Nanoparticles ◽  
Optical Efficiency ◽  
Solar Concentrators ◽  
Light Emitting ◽  
Luminescent Solar Concentrators ◽  
Light Concentration ◽  
Core Shell Nanoparticles

Semiconductor nanoparticles (SNPs), such as quantum dots (QDs) and core/shell nanoparticles, have proven to be promising candidates for the development of next-generation technologies, including light-emitting diodes (LEDs), liquid crystal displays (LCDs) and solar concentrators. Typically, these applications use a sub-micrometer-thick film of SNPs to realize photoluminescence. However, our current knowledge on how this thin SNP layer affects the optical efficiency remains incomplete. In this work, we demonstrate how the thickness of the photoluminescent layer governs the direction of the emitted light. Our theoretical and experimental results show that the emission is fully outcoupled for sufficiently thin films (monolayer of SNPs), whereas for larger thicknesses (larger than one tenth of the wavelength) an important contribution propagates along the film that acts as a planar waveguide. These findings serve as a guideline for the smart design of diverse QD-based systems, ranging from LEDs, where thinner layers of SNPs maximize the light outcoupling, to luminescent solar concentrators, where a thicker layer of SNPs will boost the efficiency of light concentration.

scholarly journals Gram-scale synthesis of carbon quantum dots with a large Stokes shift for the fabrication of eco-friendly and high-efficiency luminescent solar concentrators

2021 ◽  
Author(s):  
Haiguang Zhao ◽  
Guiju Liu ◽  
Shujie You ◽  
Franco V. A. Camargo ◽  
Margherita Zavelani-Rossi ◽  
...  
Keyword(s):  
Quantum Dots ◽  
High Efficiency ◽  
Stokes Shift ◽  
Carbon Quantum Dots ◽  
Large Area ◽  
Optical Efficiency ◽  
Solar Concentrators ◽  
Large Stokes Shift ◽  
Highly Efficient ◽  
Luminescent Solar Concentrators

Highly efficient large-area luminescent solar concentrators (LSCs) were demonstrated using colloidal C-dots. The large-area LSC (225 cm2) exhibited an external optical efficiency of 2.2% (under natural sun irradiation, 60 mW cm−2).

scholarly journals Luminescent Solar Concentrators Based on Energy Transfer from an Aggregation-Induced Emitter Conjugated Polymer

2019 ◽  
Author(s):  
Guanpeng Lyu ◽  
James Kendall ◽  
Ilaria Meazzini ◽  
Eduard Preis ◽  
Sebnem Baysec ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Stokes Shift ◽  
Optical Efficiency ◽  
Solar Concentrators ◽  
Perylene Bisimide ◽  
Luminescent Solar Concentrators ◽  
Covalent Grafting ◽  
Förster Energy Transfer ◽  
Donor Acceptor ◽  
Photoluminescence Studies

<div><div><div><p>Luminescent solar concentrators (LSCs) are solar-harvesting devices fabricated from transparent waveguide that is doped or coated with lumophores. Despite their potential for architectural integration, the optical efficiency of LSCs is often limited by incomplete harvesting of solar radiation and aggregation-caused quenching (ACQ) of lumophores in the solid state. Here, we demonstrate a multi-lumophore LSC design which circumvents these challenges through a combination of non-radiative Förster energy transfer (FRET) and aggregation-induced emission (AIE). The LSC incorporates a green-emitting poly(tetraphenylethylene), p-O-TPE, as an energy donor and a red-emitting perylene bisimide molecular dye (PDI-Sil) as the energy acceptor, within an organic-inorganic hybrid di-ureasil waveguide. Steady-state photoluminescence studies demonstrate that the di-ureasil host induced AIE from the p-O-PTE donor polymer, leading to a high photoluminescence quantum yield (PLQY) of ~45% and a large Stokes shift of ~150 nm. Covalent grafting of the PDI-Sil acceptor to the siliceous domains of the di-ureasil waveguide also inhibits non-radiative losses by preventing molecular aggregation. Due to the excellent spectral overlap, FRET was shown to occur from p-O-TPE to PDI-Sil, which increased with acceptor concentration. As a result, the final LSC (4.5 cm x 4.5 cm x 0.3 cm) with an optimised donor- acceptor ratio (1:1 by wt%) exhibited an internal photon efficiency of 20%, demonstrating a viable design for LSCs utilising an AIE-based FRET approach to improve the solar-harvesting performance.</p></div></div></div>

scholarly journals Luminescent Solar Concentrators Based on Energy Transfer from an Aggregation-Induced Emitter Conjugated Polymer

2019 ◽  
Author(s):  
Guanpeng Lyu ◽  
James Kendall ◽  
Eduard Preis ◽  
Sebnem Baysec ◽  
Ullrich Scherf ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Stokes Shift ◽  
Optical Efficiency ◽  
Solar Concentrators ◽  
Perylene Bisimide ◽  
Luminescent Solar Concentrators ◽  
Covalent Grafting ◽  
Förster Energy Transfer ◽  
Donor Acceptor ◽  
Photoluminescence Studies

<div><div><div><p>Luminescent solar concentrators (LSCs) are solar-harvesting devices fabricated from transparent waveguide that is doped or coated with lumophores. Despite their potential for architectural integration, the optical efficiency of LSCs is often limited by incomplete harvesting of solar radiation and aggregation-caused quenching (ACQ) of lumophores in the solid state. Here, we demonstrate a multi-lumophore LSC design which circumvents these challenges through a combination of non-radiative Förster energy transfer (FRET) and aggregation-induced emission (AIE). The LSC incorporates a green-emitting poly(tetraphenylethylene), p-O-TPE, as an energy donor and a red-emitting perylene bisimide molecular dye (PDI-Sil) as the energy acceptor, within an organic-inorganic hybrid di-ureasil waveguide. Steady-state photoluminescence studies demonstrate that the di-ureasil host induced AIE from the p-O-PTE donor polymer, leading to a high photoluminescence quantum yield (PLQY) of ~45% and a large Stokes shift of ~150 nm. Covalent grafting of the PDI-Sil acceptor to the siliceous domains of the di-ureasil waveguide also inhibits non-radiative losses by preventing molecular aggregation. Due to the excellent spectral overlap, FRET was shown to occur from p-O-TPE to PDI-Sil, which increased with acceptor concentration. As a result, the final LSC (4.5 cm x 4.5 cm x 0.3 cm) with an optimised donor- acceptor ratio (1:1 by wt%) exhibited an internal photon efficiency of 20%, demonstrating a viable design for LSCs utilising an AIE-based FRET approach to improve the solar-harvesting performance.</p></div></div></div>

scholarly journals Luminescent Solar Concentrators Based on Energy Transfer from an Aggregation-Induced Emitter Conjugated Polymer

2019 ◽  
Author(s):  
Guanpeng Lyu ◽  
James Kendall ◽  
Ilaria Meazzini ◽  
Eduard Preis ◽  
Sebnem Baysec ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Stokes Shift ◽  
Optical Efficiency ◽  
Solar Concentrators ◽  
Perylene Bisimide ◽  
Luminescent Solar Concentrators ◽  
Covalent Grafting ◽  
Förster Energy Transfer ◽  
Donor Acceptor ◽  
Photoluminescence Studies

<div><div><div><p>Luminescent solar concentrators (LSCs) are solar-harvesting devices fabricated from transparent waveguide that is doped or coated with lumophores. Despite their potential for architectural integration, the optical efficiency of LSCs is often limited by incomplete harvesting of solar radiation and aggregation-caused quenching (ACQ) of lumophores in the solid state. Here, we demonstrate a multi-lumophore LSC design which circumvents these challenges through a combination of non-radiative Förster energy transfer (FRET) and aggregation-induced emission (AIE). The LSC incorporates a green-emitting poly(tetraphenylethylene), p-O-TPE, as an energy donor and a red-emitting perylene bisimide molecular dye (PDI-Sil) as the energy acceptor, within an organic-inorganic hybrid di-ureasil waveguide. Steady-state photoluminescence studies demonstrate that the di-ureasil host induced AIE from the p-O-PTE donor polymer, leading to a high photoluminescence quantum yield (PLQY) of ~45% and a large Stokes shift of ~150 nm. Covalent grafting of the PDI-Sil acceptor to the siliceous domains of the di-ureasil waveguide also inhibits non-radiative losses by preventing molecular aggregation. Due to the excellent spectral overlap, FRET was shown to occur from p-O-TPE to PDI-Sil, which increased with acceptor concentration. As a result, the final LSC (4.5 cm x 4.5 cm x 0.3 cm) with an optimised donor- acceptor ratio (1:1 by wt%) exhibited an internal photon efficiency of 20%, demonstrating a viable design for LSCs utilising an AIE-based FRET approach to improve the solar-harvesting performance.</p></div></div></div>

scholarly journals Luminescent Solar Concentrators Based on Energy Transfer from an Aggregation-Induced Emitter Conjugated Polymer

2019 ◽  
Author(s):  
Guanpeng Lyu ◽  
James Kendall ◽  
Ilaria Meazzini ◽  
Eduard Preis ◽  
Sebnem Baysec ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Stokes Shift ◽  
Optical Efficiency ◽  
Solar Concentrators ◽  
Perylene Bisimide ◽  
Luminescent Solar Concentrators ◽  
Covalent Grafting ◽  
Förster Energy Transfer ◽  
Donor Acceptor ◽  
Photoluminescence Studies

<div><div><div><p>Luminescent solar concentrators (LSCs) are solar-harvesting devices fabricated from transparent waveguide that is doped or coated with lumophores. Despite their potential for architectural integration, the optical efficiency of LSCs is often limited by incomplete harvesting of solar radiation and aggregation-caused quenching (ACQ) of lumophores in the solid state. Here, we demonstrate a multi-lumophore LSC design which circumvents these challenges through a combination of non-radiative Förster energy transfer (FRET) and aggregation-induced emission (AIE). The LSC incorporates a green-emitting poly(tetraphenylethylene), p-O-TPE, as an energy donor and a red-emitting perylene bisimide molecular dye (PDI-Sil) as the energy acceptor, within an organic-inorganic hybrid di-ureasil waveguide. Steady-state photoluminescence studies demonstrate that the di-ureasil host induced AIE from the p-O-PTE donor polymer, leading to a high photoluminescence quantum yield (PLQY) of ~45% and a large Stokes shift of ~150 nm. Covalent grafting of the PDI-Sil acceptor to the siliceous domains of the di-ureasil waveguide also inhibits non-radiative losses by preventing molecular aggregation. Due to the excellent spectral overlap, FRET was shown to occur from p-O-TPE to PDI-Sil, which increased with acceptor concentration. As a result, the final LSC (4.5 cm x 4.5 cm x 0.3 cm) with an optimised donor- acceptor ratio (1:1 by wt%) exhibited an internal photon efficiency of 20%, demonstrating a viable design for LSCs utilising an AIE-based FRET approach to improve the solar-harvesting performance.</p></div></div></div>

scholarly journals Luminescent solar concentrators: boosted optical efficiency by polymer dielectric mirrors

2019 ◽  
Vol 3 (3) ◽  
pp. 429-436 ◽  
Author(s):  
G. Iasilli ◽  
R. Francischello ◽  
P. Lova ◽  
S. Silvano ◽  
A. Surace ◽  
...  
Keyword(s):  
Photovoltaic Systems ◽  
Optical Efficiency ◽  
Solar Concentrators ◽  
Polymer Dielectric ◽  
Luminescent Solar Concentrators ◽  
Building Integrated Photovoltaic ◽  
Dielectric Contrast ◽  
Dielectric Mirrors ◽  
High Dielectric ◽  
The Way

High dielectric contrast polymer dielectric mirrors are used to recycle non-absorbed photons in organic luminescent solar concentrators. A 10% increase in the concentrator optical efficiency is found and retained upon doubling its size paving the way to lightweight and cheap building integrated photovoltaic systems.

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