1. Ecole Polytechnique Fédérale de Lausanne (EPFL); Institute of Microengineering (IMT) Photovoltaics and Thin-Film Electronics Laboratory (PV-Lab); Rue de la Maladière 71b 2002 Neuchâtel Switzerland
2. CSEM; PV-Center; Jaquet-Droz 1 2002 Neuchâtel Switzerland
3. Department of Physics; University of Basel; Klingelbergstrasse 82 CH-4056 Basel Switzerland