1. Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, 601 74 Norrköping, Sweden
2. Wallenberg Wood Science Center, Department of Science and Technology, Linköping University, 601 74 Norrköping, Sweden
3. Wallenberg Initiative Materials Science for Sustainability, Department of Science and Technology, Linköping University, 601 74 Norrköping, Sweden