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@ARTICLE{Eckner:153803,
      author       = {Eckner, S. and Kämmer, H. and Steinbach, Tobias and
                      Gnauck, Martin and Johannes, Andreas and Stephan, Christiane
                      and Schorr, Susan and Schnohr, C. S.},
      title        = {{A}tomic-scale structure, cation distribution, and bandgap
                      bowing in {C}u({I}n,{G}a){S}e2 and {C}u({I}n,{G}a){S}2},
      journal      = {Applied physics letters},
      volume       = {103},
      issn         = {1077-3118},
      address      = {Melville, NY},
      publisher    = {American Institute of Physics},
      reportid     = {DESY-2013-00713},
      pages        = {081905},
      year         = {2013},
      note         = {(c) AIP Publishing LLC},
      abstract     = {Mixed chalcopyrite semiconductors like Cu(In,Ga)S2 and
                      Cu(In,Ga)Se2 are characterized by thecoexistence of
                      different local atomic arrangements around the S or Se
                      anion. The resulting aniondisplacement strongly influences
                      the material bandgap. We studied the atomic-scale structure
                      ofCu(In,Ga)S2 as a function of composition using x-ray
                      absorption spectroscopy and valence forcefield simulations.
                      Applying a specially developed model for not fully random
                      cation distributions,we find that structural relaxation of
                      the anion with respect to In and Ga contributes
                      significantlymore to the bandgap bowing observed for
                      Cu(In,Ga)S2 and Cu(In,Ga)Se2 than relaxation withrespect to
                      Cu and group-III atoms.},
      cin          = {DOOR},
      ddc          = {530},
      cid          = {I:(DE-H253)HAS-User-20120731},
      pnm          = {DORIS Beamline C (POF2-54G13) / FS-Proposal: I-20100027
                      (I-20100027) / FS-Proposal: I-20110135 (I-20110135)},
      pid          = {G:(DE-H253)POF2-C-20130405 / G:(DE-H253)I-20100027 /
                      G:(DE-H253)I-20110135},
      experiment   = {EXP:(DE-H253)D-C-20150101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000323788100020},
      doi          = {10.1063/1.4819225},
      url          = {https://bib-pubdb1.desy.de/record/153803},
}