1. Ecole Polytechnique Fédérale de Lausanne (EPFL), Institute of Electrical and Microengineering (IEM), Photovoltaics and Thin-Film Electronics Laboratory, Neuchâtel 2002, Switzerland
2. Swiss-Norwegian Beamlines, European Synchrotron Radiation Facility, Grenoble 38000, France
3. Institute for Photovoltaics (ipv), University of Stuttgart, Stuttgart 70569, Germany
4. IEK5-Photovoltaics, Forschungszentrum Jülich, Jülich 52428, Germany
5. Laboratory for Surface Science and Coating Technologies, Empa−Swiss Federal Laboratories for Materials Science and Technology, Duebendorf 8600, Switzerland
6. CSEM, Sustainable Energy Center, Neuchâtel 2000, Switzerland