Fig. 4: Mechanical properties of PU//conductive PEDOT:PSS//PEDOT:PSS HTL//active layer composite films.

Photographs showing elongation of the (a, b) PM6:Y6 and (d, e) Ter-D18:Y6 active layers of freestanding composite films delaminated from an octadecyltrichlorosilane-modified hydrophobic glass substrate. OM images of freestanding composite films with the (c) PM6:Y6 and (f) Ter-D18:Y6 active systems under tensile strain.