scholarly journals UV-curable fluoropolymers crosslinked with functional fluorescent dyes: the way to multifunctional thin-film luminescent solar concentrators

2017 ◽  
Vol 5 (19) ◽  
pp. 9067-9075 ◽  
Author(s):  
Diego Pintossi ◽  
Alessia Colombo ◽  
Marinella Levi ◽  
Claudia Dragonetti ◽  
Stefano Turri ◽  
...  
Keyword(s):  
Thin Film ◽  
Fluorescent Dyes ◽  
Solar Concentrators ◽  
Uv Curable ◽  
Fluorinated Polymer ◽  
Luminescent Solar Concentrators ◽  
The Way

Co-crosslinking a luminescent dye with a photo-curable fluorinated polymer allows highly stable multifunctional thin-film luminescent solar concentrators to be obtained.

scholarly journals Flexible, Front-Facing Luminescent Solar Concentrators Fabricated from Lumogen F Red 305 and Polydimethylsiloxane

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Ian A. Carbone ◽  
Katelynn R. Frawley ◽  
Melissa K. McCann
Keyword(s):  
Thin Film ◽  
Fluorescent Dyes ◽  
Organic Dyes ◽  
Cost Effective ◽  
Power Production ◽  
Optical Measurements ◽  
Light Collection ◽  
Solar Concentrators ◽  
Luminescent Solar Concentrators ◽  
Thin Film Devices

Luminescent solar concentrators (LSCs) fabricated with transparent host materials and fluorescent organic dyes are cost effective and versatile tools for solar power production. In this study, the first flexible, front-facing LSCs utilizing Lumogen F Red 305 (LR305) and polydimethylsiloxane (PDMS) were demonstrated. Bulk-doped devices, fabricated with dye evenly distributed throughout the waveguide, were optimized for light gain with LR305 concentrations between 0.075 and 0.175 g/l. Thin-film devices, fabricated with a thin layer of luminescent material applied to the bottom side of the waveguide, were optimized between 0.5 and 0.75 g/l. The bulk-doped and thin-film devices produced light gains of 1.86 and 1.89, respectively, demonstrating that flexible designs can be developed without sacrificing power production. Bulk-doped devices proved to be less effective than thin-film devices at collecting direct light due to the placement of fluorescent dyes above the front-facing solar cell. Thin-film devices demonstrated less light collection than bulk-doped devices further from the device centers possibly due to quenching and self-absorption losses at higher dye concentrations. Light collection was minimally impacted by moderate bending in both LSC designs, suggesting that flexible, front-facing devices could be effectively deployed on curved and uneven surfaces. Finally, optical measurements of the LSC waveguides suggest that they could support plant growth underneath. Similar designs could be developed for applications in agricultural settings.

Spectral-based analysis of thin film luminescent solar concentrators

Solar Energy ◽  
2010 ◽  
Vol 84 (8) ◽  
pp. 1366-1369 ◽  
Author(s):  
Thomas Dienel ◽  
Christophe Bauer ◽  
Igor Dolamic ◽  
Dominik Brühwiler
Keyword(s):  
Thin Film ◽  
Solar Concentrators ◽  
Luminescent Solar Concentrators

scholarly journals Enhancement of Fluorescence and Photostability Based on Interaction of Fluorescent Dyes with Silver Nanoparticles for Luminescent Solar Concentrators

2017 ◽  
Vol 2017 ◽  
pp. 1-13 ◽  
Author(s):  
Sara El-Molla ◽  
A. F. Mansour ◽  
A. E. Hammad
Keyword(s):  
Silver Nanoparticles ◽  
Band Gap ◽  
Optical Band Gap ◽  
Fluorescent Dyes ◽  
Organic Dyes ◽  
X Ray Diffraction ◽  
Absorption Bands ◽  
Solar Concentrators ◽  
Luminescent Solar Concentrators ◽  
Silver Nps

For luminescent solar concentrators (LSCs), it is important to enhance the fluorescence quantum yield (FQY) and photostability. Our measurements have demonstrated that the addition of silver nanoparticles to dye solution causes broadening of absorption bands, so the spectral range of sunlight absorbed by LSC has increased. Silver nanoparticles (NPs) were characterized by X-ray diffraction (XRD) and UV-Vis absorption spectra. UV-Vis spectrum showed a single peak at 442 nm due to the surface plasmon resonance (SPR). The position of SPR peak exhibited a red shift after the sample was exposed to UV irradiation (unfiltered light). The optical band gap values have a reduction from 2.46 to 2.37 eV after irradiation for 960 minutes. Such reduction in optical band gap may be due to change in particle size calculated using Mie theory. The photostability of organic dyes used was improved after adding silver nanoparticles. The area under fluorescence spectra of dyes with silver NPs increased by 41–31% when compared with identical dye concentrations without silver nanoparticles as a result of interaction of the species with silver NPs.

Thin-film luminescent solar concentrators: A device study towards rational design

2015 ◽  
Vol 78 ◽  
pp. 288-294 ◽  
Author(s):  
Gianmarco Griffini ◽  
Marinella Levi ◽  
Stefano Turri
Keyword(s):  
Thin Film ◽  
Rational Design ◽  
Solar Concentrators ◽  
Luminescent Solar Concentrators
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