Figure 4

(a) As-recorded GIWAXS pattern of the annealed pSi/PCBM film and (b) simulated GIWAXS pattern from the solved crystal structure for the same measurement conditions. Views of the packing of PCBM along (c) the a-axis and (d) the c-axis with only one of the four columns along the 2-fold screw axes in the unit cell displayed. The molecules are colored according to their symmetrical equivalence.