Descripción
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A novel HCPV nonimaging concentrator concept with high concentration (>500x) is presented. It uses the combination of a commercial concentration GaInP/GaInAs/Ge 3J cell and a concentration Back-Point-Contact (BPC) concentration silicon cell for efficient spectral utilization, and external confinement techniques for recovering the 3J cell?s reflection. The primary optical element (POE) is a flat Fresnel lens and the secondary optical element (SOE) is a free-form RXI-type concentrator with a band-pass filter embedded it, both POE and SOE performing Köhler integration to produce light homogenization. The band-pass filter sends the IR photons in the 900-1200 nm band to the silicon cell. Computer simulations predict that four-terminal terminal designs could achieve ~46% added cell efficiencies using commercial 39% 3J and 26% Si cells. A first proof-of concept receiver prototype has been manufactured using a simpler optical architecture (with a lower concentration, ~100x and lower simulated added efficiency), and experimental measurements have shown up to 39.8% 4J receiver efficiency using a 3J with peak efficiency of 36.9%. | |
Internacional
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Si |
Nombre congreso
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7 International Conference on Concentrating Photovoltaic Systems |
Tipo de participación
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960 |
Lugar del congreso
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Las Vegas, EEUU |
Revisores
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Si |
ISBN o ISSN
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978-0-7354-0979-8 |
DOI
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Fecha inicio congreso
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04/04/2011 |
Fecha fin congreso
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06/04/2011 |
Desde la página
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88 |
Hasta la página
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92 |
Título de las actas
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7TH INTERNATIONAL CONFERENCE ON CONCENTRATING PHOTOVOLTAIC SYSTEMS: CPV-7 Vol. 1407 |