1. Division of X-ray Photon Science, Department of Physics and Astronomy, Uppsala University, P.O. Box 516, SE-751 20 Uppsala, Sweden
2. Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, SE-60174 Norrköping, Sweden
3. Division of Applied Physical Chemistry, Department of Chemistry, KTH-Royal Institute of Technology, SE-100 44 Stockholm, Sweden
4. Sorbonne Université, CNRS, Institut des NanoSciences de Paris-INSP, F 75005 Paris, France