Fig. 4

The morphology characterization of the active layers. a Two-dimensional GIWAXS patterns and b line profiles of neat and blend films of the small-molecule acceptors. c Calculated face-on population for PBDB-T:DOC6-IC, PBDB-T:DOC8-IC, PBDB-T:DOC2C6-IC, PBDB-T:DC6-IC, and PBDB-T:DOC2C6-2F blend films. d R-SoXS profiles in log scale for blend films