1. Material Research Center for Energy Systems (MZE) Karlsruhe Institute of Technology (KIT) Strasse am Forum 7 76131 Karlsruhe Germany
2. Light Technology Institute (LTI) Karlsruhe Institute of Technology (KIT) Engesserstrasse 13 76131 Karlsruhe Germany
3. Laboratory for Electron Microscopy (LEM) Karlsruhe Institute of Technology (KIT) Engesserstr. 7 76131 Karlsruhe Germany
4. Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany