Memorias de investigación
Research Publications in journals:
Optically enhanced photon recycling in mechanically stacked multijunction solar cells
Year:2016
Research Areas
  • Solar cells
Information
Abstract
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.
International
Si
JCR
Si
Title
Ieee Journal of Photovoltaics
ISBN
2156-3381
Impact factor JCR
3
Impact info
Volume
6
10.1109/jphotov.2015.2494690
Journal number
1
From page
358
To page
365
Month
SIN MES
Ranking
Participants
  • 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
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Semiconductores III-V