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Maziar Afshar, Sascha Sadewasser, Jürgen Albert, Sebastian Lehmann, Daniel Abou-Ras, David Fuertes Marrón, Angus A. Rockett, Esa Räsänen and Martha Ch. Lux-Steiner Chalcopyrite Semiconductors for Quantum Well Solar Cells Advanced Energy Materials 1

Article first published online: 7 SEP 2011 | DOI: 10.1002/aenm.201100362

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The potential of highly absorbing Cu(In,Ga)Se2 semiconductors for quantum well solar cells is investigated. The optical properties of a CuInSe2 well with CuGaSe2 barriers indicate charge carrier confinement, which is numerically confirmed using the effective-mass approximation. Compositional analysis shows interdiffusion of In and Ga at the interfaces. The results provide a promising basis for the development of chalcopyrite-type quantum well structures.

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