1. Laboratory of Organic Electronics Department of Science and Technology Linköping University Norrköping SE‐60174 Sweden
2. Division of Information Coding Department of Electrical Engineering Linköping University Linköping SE‐581 83 Sweden
3. Printed, Bio‐ and Organic Electronics RISE Research Institutes of Sweden Bredgatan 33, Box 787 Norrköping SE‐60117 Sweden
4. Wallenberg Wood Science Center Linköping University Norrköping SE‐60174 Sweden