1. Laboratory of Organic Electronics, Department of Science and Technology (ITN), Campus Norrköping, Linköping University, Norrköping SE-60174, Sweden
2. Scientific Visualization Group, Department of Science and Technology (ITN), Campus Norrköping, Linköping University, Norrköping SE-60174, Sweden
3. Swedish e-Science Research Centre (SeRC), Linköping University, Linköping SE-581 83, Sweden
4. Wallenberg Wood Science Center, Linköping University, Norrköping SE-60174, Sweden