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Memorias de investigación
Communications at congresses:
Towards 35% Efficient Concentrator Modules Based On LPI Köhler Concentrators With External Confinement Cavities
Year:2011
Research Areas
  • Engineering
Information
Abstract
Abstract. Multijunction solar cells present a certain reflectivity on its surface that lowers its light absorption. This reflectivity produces a loss in electrical efficiency and thus a loss in global energy production for CPV systems. We present here an optical design for recovering this portion of reflected light, and thus leading to a system efficiency increase. This new design is based on an external confinement cavity, an optical element able to redirect the light reflected by the cell towards its surface again. We have proven the excellent performance of these cavities integrated in CPV modules offering outstanding results: 33.2% module electrical efficiency @Tcell=25ºC and relative efficiency and Isc gains of over 6%.
International
Si
Congress
7 International Conference on Concentrating Photovoltaic Systems
960
Place
Las Vegas - USA
Reviewers
Si
ISBN/ISSN
978-0-7354-0979-8
Start Date
04/04/2011
End Date
06/04/2011
From page
109
To page
112
Towards 35% Efficient Concentrator Modules Based On LPI Köhler Concentrators With External Confinement Cavities
Participants
  • Autor: Juan Carlos Miñano Dominguez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Ingeniería Óptica
  • Centro o Instituto I+D+i: Centro de Domótica Integral, CEDINT
  • Departamento: Electrónica Física
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