1. Instituto de Ciencia Molecular; Universidad de Valencia; C/J. Beltrán 2 46980 Paterna Spain
2. Ecole Polytechnique Fédérale de Lausanne (EPFL); Institute of Microengineering (IMT); Photovoltaics and Thin-Film Electronics Laboratory; Rue de la Maladière 71b 2002 Neuchâtel Switzerland
3. CSEM; PV-Center; Rue Jaquet-Droz 1 2002 Neuchâtel Switzerland