1. Energy Materials Fraunhofer Research Institution for Materials Recycling and Resource Strategies IWKS Aschaffenburger Strasse 121 63457 Hanau Germany
2. Institute of Materials Science, Research Division Materials and Resources Technical University of Darmstadt Alarich-Weiss-Strasse 2 64287 Darmstadt Germany
3. Diagnostics and Metrology Fraunhofer CSP Center for Silicon Photovoltaics Otto-Eißfeldt-Strasse 12 06120 Halle (Saale) Germany
4. Department of Physical Chemistry University of Geneva Quai Ernest Ansermet 30 CH-1211 Geneva 4 Switzerland
5. Institute of Chemistry Martin Luther University Halle-Wittenberg Kurt-Mothes-Strasse 2 06120 Halle (Saale) Germany