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Descripción
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| In a concentrator photovoltaic (CPV) module, the solar cell surface reflects a non-negligible portion of the incoming light, leading to a loss in module efficiency. The Fresnel-Kóhler with an external confinement cavity (CFK) is a novel optical CPV concentrator designed to recover this portion of the reflected light. The design is based on an external confinement cavity, an optical element able to redirect the light reflected by the cell surface towards its surface again. Its integration into a CPV module is possible, thanks to the recent invention of advanced Kohler concentrators by LPI. This strategy, based on light recovery, leads to a significant increase in electrical efficiency. We have tested the excellent performance of these cavities by means of integrating one of them into an FK concentrator and manufacturing a proof-of-concept prototype. The measured results are outstanding: a relative electrical efficiency and Ise gains of up to 6% when comparing both with and without cavity designs, and a 33.2% of CFK module electrical efficiency (@Tcell=25 DC) using a 38.5% nominal efficiency cell (without anti-reflection coatings on the optics). | |
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Internacional
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JCR del ISI
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Si |
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Título de la revista
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Progress in Photovoltaics |
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ISSN
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1062-7995 |
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Factor de impacto JCR
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9,696 |
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Información de impacto
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Volumen
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DOI
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Número de revista
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Desde la página
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66 |
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Hasta la página
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73 |
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Mes
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SIN MES |
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Ranking
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ENERGY & FUELS (4-88), MATERIALS SCIENCE, MULTIDISCIPLINARY (259-18), PHYSICS, APPLIED (143-11) |