1. Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstr. 3A, 30167 Hannover, Germany
2. Division of Chemistry Department of Physics, Chemistry and Biology, Linköping University, 581 83 Linköping, Sweden
3. Department of Physics, Norwegian University of Science and Technology, 7491 Trondheim, Norway
4. Department of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, SE-106 91 Stockholm, Sweden
5. Laboratory of Organic Electronics, ITN, Linköping University, PSE-581 83 Linköping, Sweden
6. Scientific Visualization Group, ITN, Linköping University, SE-581 83 Linköping, Sweden