Fig. 5: GIWAXS characterization of the blend films.

a–d 2D GIWAXS patterns. e, f 1D line-cut profiles in OOP direction and IP direction of the PTTz:FNEA blend films. g, h The g-factor and L_c of OOP (010) diffractions and IP (100) diffractions for the electron acceptors in blend films. Source data are provided as a Source Data file.