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Two-dimensional GaAs/AlGaAs superlattice structures for solar cell applications: Ultimate efficiency estimation

J. Appl. Phys. 106, 093703 (2009); doi:10.1063/1.3253584

Published 6 November 2009

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Jaroslaw W. Klos1,2 and Maciej Krawczyk1
1Surface Physics Division, Faculty of Physics, Adam Mickiewicz University, ul. Umultowska 85, 61-614 Poznań, Poland
2Department of Science and Technology, Linköping University, 601 74 Norrköping, Sweden
We calculate the band structure of a two-dimensional GaAs/AlGaAs superlattice and estimate the ultimate efficiency of solar cells using this type of structure for solar energy conversion. The superlattice under consideration consists of gallium arsenide rods forming a square lattice and embedded in aluminum gallium arsenide. The ultimate efficiency is determined versus structural parameters including the filling fraction, the superlattice constant, the rod geometry, and the concentration of Al in the matrix material. The calculated efficiency of the superlattice proves to exceed the efficiency of each component material in the monolithic state in a wide range of parameter values. ©2009 American Institute of Physics
History: Received 28 March 2009; accepted 24 September 2009; published 6 November 2009
Permalink: http://link.aip.org/link/?JAPIAU/106/093703/1

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KEYWORDS and PACS

Keywords
PACS
  • 73.21.Cd
    Superlattices (electron states/collective excitations)
  • 84.60.Jt
    Photoelectric conversion: solar cells and arrays
  • YEAR: 2009

PUBLICATION DATA

ISSN:
0021-8979 (print)   1089-7550 (online)
Publisher:
AIP is a member of CrossRef AIP

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