Journal ArticleDOI
Solar Energy Conversion with Fluorescent Collectors
A. Goetzberger,W. Greubel +1 more
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TLDR
In this article, a new principle for solar energy conversion is proposed and evaluated theoretically, and the optical path length in a triangular collector is computed, which offers the advantage of separating the various fractions of light and converting them with solar cells with different bandgaps.Abstract:
A new principle for solar energy conversion is proposed and evaluated theoretically. Collection and concentration of direct and diffuse radiation is possible by the use of a stack of transparent sheets of material doped with fluorescent dyes. High efficiency of light collection can be achieved by light guiding and special design of collectors. The optical path length in a triangular collector is computed. In combination with solar cells this type of collector offers the advantage of separating the various fractions of light and converting them with solar cells with different bandgaps. Theoretical conversion efficiency under optimum conditions is 32% for a system with four semiconductors. Thermal energy conversion offers several advantages over conventional collectors: High temperature and efficiency even under weak illumination, separation of heat transport and radiation collection, low thermal mass. Thermal efficiency is computed to be between 42% and 60%. Very attractive appear hybrid systems for generation of thermal and electric energy. An estimate of the economics of electricity generation shows that due to the concentration costs can be much lower than possible today. With the use of only silicon cells the breakeven point of $0.5/W is almost reached. Practical difficulties to be solved are: Synthesis of dyes with stringent requirements, identification of plastic materials with high transparency and development of solar cells with higher bandgaps.read more
Citations
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Book ChapterDOI
Plasmonic Coupling Enhanced Absorption and Fluorescence Emission in Thin Film Luminescent Solar Concentrator
Subhash Chandra,Sarah McCormack +1 more
TL;DR: In this paper, the plasmonic composite structures of red dye molecules and gold nanoparticles (Au NPs) for thin film luminescent solar concentrator (LSC) were fabricated using spin coating.
Patent
Cellule solaire de conversion de fluorescence et sa fabrication dans le procédé de coulée en plaques
TL;DR: The authors concerne une combinaison de colorants de conversion de fluorescence a base de polymethyl(meth)acrylate, which sont utilises for convertir le rayonnement naturel du soleil en une lumiere utilisable for les cellules solaires.
Book ChapterDOI
Onsite Solar Energy Systems: Economics and System Design
TL;DR: In this paper, the authors present methods for comparing several solar and conventional techniques for meeting well-defined energy demands, for example, for supplying all of the energy requirements of a single-family detached residence.
Journal ArticleDOI
Micro-cone arrays enhance outcoupling efficiency in horticulture luminescent solar concentrators
TL;DR: In this article , the authors proposed an effective method for improving outcoupling efficiency, based on protruded and extruded micro-cone arrays patterned on the bottom surface of LSCs.
Journal ArticleDOI
Optimization of wave-guided luminescence for higher efficiency of bifacial thin-film microscale GaAs solar cells
Ling Shen,Yifeng Shen,Feng Li +2 more
TL;DR: In this paper, a pyramid structure with specular back side reflector (BSR) is proposed to change the direction of photon propagation to achieve more wave-guided luminescence for surface printed bifacial GaAs μ-cells.
References
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The Theory and Practice of Scintillation Counting
J. B. Birks,F. W. K. Firk +1 more
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Luminescent greenhouse collector for solar radiation.
Willes H. Weber,John J Lambe +1 more
Journal ArticleDOI
Limitations and Possibilities for Improvement of Photovoltaic Solar Energy Converters: Part I: Considerations for Earth's Surface Operation
TL;DR: In this paper, seven factors limiting the performance of photovoltaic solar energy converters are listed and explained, which can be classified into basic and technology-decided limitations.
Journal ArticleDOI
High‐efficiency Ga1−xAlxAs–GaAs solar cells
Jerry M. Woodall,H. Hövel +1 more
TL;DR: In this paper, a homojunction solar cell consisting of pGa1−xAlxAs−pGaAs-n GaAs was used to achieve power conversion efficiency of over 16% (corrected for contact area) measured in sunlight for air mass 1 at sea level, while efficiencies of 19-20% for an air mass value of 2 or more.
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