Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
High-efficiency Köhler photovoltaic concentrators with external light confinement
Year:2011
Research Areas
  • Engineering
Information
Abstract
Metal grid lines are a vital element in multijunction solar cells in order to take out from the cell the generated photocurrent. Nevertheless all this implies certain shadowing factor and thus certain reflectivity on cells 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. It has been possible thanks to the recent invention of the advanced Köhler concentrators by LPI, likely to integrate one of these cavities easily.
International
Si
Congress
Nonimaging Optics: Efficient Design for Illumination and Solar Concentration VIII
960
Place
San Diego, EEUU
Reviewers
Si
ISBN/ISSN
0277-786X
Start Date
21/08/2011
End Date
22/08/2011
From page
1
To page
8
PROCEEDINGS OF SPIEVolume 8124 Nonimaging Optics: Efficient Design for Illumination and Solar C
Participants
  • Autor: Pablo Zamora Herranz (UPM)
  • Autor: Pablo Benitez Gimenez (UPM)
  • Autor: Juan Carlos Miñano Dominguez (UPM)
  • Autor: Marina Buljan . (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
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)