1. Laboratory of Organic Electronics, Bredgatan 33, 60174, ITN, Linköping University, Norrköping, Sweden
2. Ligna Energy AB, Box 787, 601 74 Norrköping, Sweden
3. Department of Physics, Chemistry and Biology IFM, Linkopings Universitet, Linköping, Sweden 58183
4. Wallenberg Wood Science Center, Bredgatan 33, 60174, ITN, Linköping University, Norrköping, Sweden