1. Nanochemistry Department, Max Planck Institute for Solid State Research, Heisenbergstraße 1, 70569 Stuttgart, Germany
2. Department of Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
3. Laboratory of Photonics and Interfaces, École Polytechnique Fédérale de Lausanne, Station 6, 1015 Lausanne, Switzerland
4. Central Facility for Materials Science Electron Microscopy, Ulm University, 89081 Ulm, Germany
5. Department of Chemistry and Center for NanoScience (CeNS), Ludwig-Maximilians-Universität München, Butenandtstraße 5-13 (E), 81377 Munich, Germany
6. Laboratory for Molecular Engineering of Optoelectronic Nanomaterials, École Polytechnique Fédérale de Lausanne (EPFL), Station 6, 1015 Lausanne, Switzerland
7. Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstraße 5-13, 81377 Munich, Germany
8. E-Conversion and Center for Nanoscience, Lichtenbergstraße 4a, Garching bei München, 85748 Munich, Germany
9. Center for Advancing Electronics Dresden (CFAED) and Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany