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Memorias de investigación
Artículos en revistas:
Optically enhanced photon recycling in mechanically stacked multijunction solar cells
Año:2016
Áreas de investigación
  • Células solares
Datos
Descripción
Multijunction solar cells can be fabricated by mechanically bonding together component cells that are grown separately. Here, we present four-junction four-terminal mechanical stacks composed of GaInP/GaAs tandems grown on GaAs substrates and GaInAsP/GaInAs tandems grown on InP substrates. The component cells were bonded together with a low-index transparent epoxy that acts as an angularly selective reflector to the GaAs bandedge luminescence, while simultaneously transmitting nearly all of the subbandgap light. As determined by electroluminescence measurements and optical modeling, the GaAs subcell demonstrates a higher internal radiative limit and, thus, higher subcell voltage, compared with GaAs subcells without the epoxy reflector. The best cells demonstrate 38.8 ± 1.0% efficiency under the global spectrum at 1000W/m2 and �42% under the direct spectrum at �100 suns. Eliminating the series resistance is the key challenge for further improving the concentrator cells. © 2011-2012 IEEE.
Internacional
Si
JCR del ISI
Si
Título de la revista
Ieee Journal of Photovoltaics
ISSN
2156-3381
Factor de impacto JCR
3
Información de impacto
Volumen
6
DOI
10.1109/jphotov.2015.2494690
Número de revista
1
Desde la página
358
Hasta la página
365
Mes
SIN MES
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Participantes
  • Autor: M.A. Steiner
  • Autor: J.F. Geisz
  • Autor: J.S. Ward
  • Autor: Ivan Garcia Vara (UPM)
  • Autor: D.J. Friedman
  • Autor: R.R. King
  • Autor: P.T. Chiu
  • Autor: R.M. France
  • Autor: A. Duda
  • Autor: W.J. Olavarria
  • Autor: M. Young
  • Autor: S.R. Kurtz
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Semiconductores III-V
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