1. NanoSYD, Mads Clausen Institute, University of Southern Denmark, 6400 Sønderborg, Denmark
2. XMaS UK CRG Beamline, European Synchrotron Radiation Facility, 38043 Grenoble Cedex 09, France
3. Department of Physics, University of Warwick, CV4 7AL Coventry, U.K.
4. Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India
5. Grupo de Semicondutores Orgânicos, Instituto de Física, Campus Darcy Ribeiro, Universidade de Brasília, CP 4478, Brasília 70919-970, DF, Brazil
6. Department of Physics, Norwegian University of Science and Technology, 7491 Trondheim, Norway