1. Laboratory of Organic Electronics Department of Science and Technology Linköping University Norrköping SE‐601 74 Sweden
2. BillerudKorsnäs Gruvön Grums SE‐664 33 Sweden
3. Fibre and Polymer Technology Division of Fibre Technology KTH Royal Institute of Technology Stockholm SE‐100 44 Sweden
4. BillerudKorsnäs Frövi Frövi SE‐718 80 Sweden
5. Wallenberg Wood Science Centre Fibre and polymer Technology KTH Royal Institute of Technology Stockholm SE‐100 44 Sweden