Fig. 4.
The GIXD character. 2D GIXD patterns for (a) CN-Cz2, (c) CN-Cz2:PO-T2T (1:1), (e) PO-T2T and respective 1D GIXD patterns (b, d, f). g The molecular packing for CN-Cz2 grain domain, PO-T2T grain domain, and the in-plane interaction between CN-Cz2 and PO-T2T grain domains. Note that the 1D GIXD profile of PO-T2T shows a strong diffraction peak at 2θ = 15.5o, corresponding to a well correlated π–π stacking with a d-spacing of 3.8 Å as illustrated in g. In CN-Cz2:PO-T2T (1:1) codeposited film, the diffraction corresponding to the π–π stacking of PO-T2T shifts to larger d-spacing as indicated by the deconvolution analyses. The interplanar spacings of the two components in the codeposited film are both larger than those in films of individual components, indicating interaction of the two components in the co-deposited film as depicted in g