Fig. 6: PiFM images of the blend films.
From: Precise synthesis and photovoltaic properties of giant molecule acceptors
The PiFM images of the PM6:acceptors blend films at the characteristic IR wavenumbers of 1640 cm−1 for the a donor PM6 and of 1540 cm−1 for the b acceptors YDT, DY, TY, QY and PY-IT. c the combined images of the corresponding a and b for PM6:YDT, PM6:DY, PM6:TY, PM6:QY and PM6:PY-IT blend films.
