1. Materials
Science Department (Materials for Electronics and Energy Technology), Friedrich-Alexander Universität Erlangen-Nürnberg, Energy Campus Nürnberg, Nürnberg 90429, Germany
2. Institute
of Semiconductor and Solid State Physics, Johannes Kepler University Linz, Linz 4040, Austria
3. Institute
of Organic Chemistry, Johannes Kepler University Linz, Linz 4040, Austria
4. Institute
of Physics, Montanuniversitaet Leoben, Leoben 8700, Austria
5. Department
of Condensed Matter Physics, Charles University Prague, Prague 12116, Czech Republic
6. Laboratory
for Electron Microscopy, Karlsruhe Institute of Technology (KIT), Karlsruhe 76128, Germany