1. Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, 60174 Norrköping, Sweden
2. Bioelectronics Materials and Devices Lab, Central European Institute of Technology, Brno University of Technology, Purkyňova 123, 61200 Brno, Czech Republic
3. Wallenberg Wood Science Center, Department of Science and Technology, Linköping University, 60174 Norrköping, Sweden