Characterization and reduction of reabsorption losses in luminescent solar concentrators
Lindsay R. Wilson,Brenda C. Rowan,Neil Robertson,Omar Moudam,Anita C. Jones,Bryce S. Richards +5 more
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The effects of excitation wavelength on the optical properties of a luminescent solar concentrator (LSC) containing a fluorescent organic dye (Lumogen F Rot 305) are studied and the optical efficiency is shown to depend strongly on the Stokes shift of the fluorophore.Abstract:
The effects of excitation wavelength on the optical properties (emission spectrum and quantum yield) of a luminescent solar concentrator (LSC) containing a fluorescent organic dye (Lumogen F Rot 305) are studied. Excitation at wavelengths on the long-wavelength edge of the absorption spectrum of the dye results in redshifted emission, but the quantum yield remains constant at 100%. The origin of this effect and its consequences are discussed. The extent of the long-wavelength tail of the absorption spectrum of the dye is determined and the importance in reabsorption losses is shown. The optical efficiencies and photon transport probabilities of LSCs containing either an organic dye or a rare-earth lanthanide complex are compared using ray-tracing simulations and experiment. The optical efficiency is shown to depend strongly on the Stokes shift of the fluorophore. The lanthanide complex, which has a very large Stokes shift, exhibits a higher optical efficiency than the dye (64% cf. 50%), despite its lower quantum yield (86% cf. 100%).read more
Citations
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Thirty Years of Luminescent Solar Concentrator Research: Solar Energy for the Built Environment
TL;DR: The luminescent solar concentrator (LSC) is a simple device at its heart, employing a polymeric or glass waveguide and luminecent molecules to generate electricity from sunlight when attached to a photovoltaic cell as mentioned in this paper.
Journal ArticleDOI
Spectral beam splitting for efficient conversion of solar energy - A review
TL;DR: In this article, the authors provide a review on the recently published research in this field and discuss the drawbacks associated with practical applications, including geometrical limitations and fabrication costs of spectrally splitting solar receivers.
Journal ArticleDOI
Zero-reabsorption doped-nanocrystal luminescent solar concentrators.
Christian S. Erickson,Liam R. Bradshaw,Stephen McDowall,John D. Gilbertson,Daniel R. Gamelin,David Patrick +5 more
TL;DR: Doped semiconductor nanocrystals are introduced as a new class of phosphors for use in luminescent solar concentrators, for the first time bounded not by luminophore self-absorption but by the transparency of the waveguide itself.
Journal ArticleDOI
Spectral conversion of light for enhanced microalgae growth rates and photosynthetic pigment production
TL;DR: The proposed illumination strategy offers improved microalgae growth without resorting to artificial light sources, reducing energy use and costs of cultivation.
Journal ArticleDOI
A leaf-inspired luminescent solar concentrator for energy-efficient continuous-flow photochemistry
TL;DR: A leaf-inspired photomicroreactor is reported that constitutes a merger between luminescent solar concentrators (LSCs) and flow photochemistry to enable green and efficient reactions powered by solar irradiation.
References
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Journal ArticleDOI
Optical properties of perfluorocyclobutyl polymers
TL;DR: In this article, the canonical optical properties of the refractive index and the extinction coefficient for two perfluorocyclobutyl-based polymers over the spectral range from approximately 0.13 μm to 33 μm, including their respective Sellmeier coefficients, are provided.
Journal ArticleDOI
Maximising the light output of a Luminescent Solar Concentrator
TL;DR: In this article, the authors investigated the effect of matrix optical quality on the performance of a single color LSC and showed that luminous output is highly sensitive to weak extinction processes in the emission spectral band.
Journal ArticleDOI
Quantum dot solar concentrator: Device optimisation using spectroscopic techniques
TL;DR: The quantum dot solar concentrator (QDSC) as mentioned in this paper is a novel non-tracking solar concentrators comprising quantum dots (QDs) seeded in materials such as plastics and glasses, that concentrates both direct and diffuse solar energy on attached photovoltaic cells.
Journal ArticleDOI
The effect of a scattering layer on the edge output of a luminescent solar concentrator
Michael G. Debije,JP Jean-Pierre Teunissen,Maud J. Kastelijn,Paul P. C. Verbunt,Cwm Cees Bastiaansen,Cwm Cees Bastiaansen +5 more
TL;DR: In this article, the effect of adding white scattering layers to the bottom side of luminescent solar concentrator waveguides is evaluated, and it is determined that adding a rear scatterer separated from the waveguide by an air gap results in a large increase of energy output from waveguide, and this enhancement persists over long (>30 cm) distances, although the magnitude of the enhancement decreases with distance.
Patent
Sunlight collecting and transmitting system
TL;DR: A lighting system for an interior of a building and the like includes a means (30) for collecting and converting sunlight into concentrated light as mentioned in this paper, which is optically coupled, preferably by way of optical joint (43), coupling means (44), and optical joint(45), to a channelling means (46), such as an optical cable, so that the concentrated light passes to the chanelling means and is channelled to a light emitting fitting for the interior of the building.
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