Izquierdo-Roca, Victor[cCatalonia Institute for Energy Research (IREC), Jardins de les Dones de Negre, 1, 2a pl., 08930 Sant Adri`a de Bes`os, Barcelona, Spain]
Siebentritt, Susanne[University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS) >]