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
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Proceedings ArticleDOI
Interdependence of reabsorption and internal energy losses in luminescent solar concentrators
TL;DR: In this paper, the Stokes shift of the luminophore is optimized to reduce the reabsorption and escape of reemitted energy from the LSC device. And the interdependence of these losses is studied computationally using a ray-tracing model that accounts for reabsorptions, Stokes shifts, escape cone loss, and matrix loss.
Journal ArticleDOI
Microemulsions for luminescent solar concentrator application
Annalisa Congiu,Liliana Gila,Luciano Caccianotti,Roberto Fusco,Chiara Busto,Stefano Zanardi,Mario Salvalaggio +6 more
TL;DR: In this article, aqueous photoactive microemulsions as original active materials to overcome the main drawback of the presence of solvents in liquid luminous solar concentrators (LSCs).
Journal ArticleDOI
Perovskite versus ZnCuInS/ZnS Luminescent Nanoparticles in Wavelength-Shifting Layers for Sensor Applications.
Aleksandra Sosna-Głębska,Natalia Szczecińska,Maciej Sibiński,Gabriela Wiosna-Salyga,Bartłomiej Januszewicz +4 more
TL;DR: In this article, the wavelength-shifting properties of two types of all-inorganic halide perovskite quantum dots as well as ZnCuInS/ZnS quantum dots are determined in order to assess their potential in the effective enhancement of the sensors' detection range.
Dissertation
Development of luminescent photobioreactors for improved cultivation of microalgae
TL;DR: Results have significant implications for improved photobioreactor design for cultivation of microalgae under natural light and can also tailor and improve the composition of lipids and photosynthetic compounds, using variation in light.
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