Fig. 1: Achieving highly aligned interpenetrating polymer fiber networks of stretchable n-type hybrid polymer semiconductor films through OCSC method combined with the spatial nanoconfinement effect.

a Three-dimensional schematic representation of the spatially nanoconfined polymer film with the highly aligned interpenetrating polymer fiber networks through the OCSC method. b Chemical structures of the polymer semiconductor FIID-CF₃TVT and SEBS elastomer. c AFM height images of the top and bottom surfaces of the hybrid polymer semiconductor films with 70 wt% SEBS through spin-coating (SC) method. d GIXRD line cuts for the polymer semiconductor films with different SEBS contents along the Q_xy axes (The lines cuts are offset for clarity). e Optical microscope images of the neat film (left) and the optimized hybrid polymer semiconductor film (right) under 100% strain. f AFM height images of the top and bottom surfaces of the hybrid polymer semiconductor film with 70 wt% SEBS through OCSC method (off-center distance = 2 cm). g Absorption spectra of polarized ultraviolet–visible spectroscopy from the OCSC hybrid polymer semiconductor film parallel and perpendicular to the radial coating direction. h GIWAXS images of the OCSC hybrid polymer semiconductor film, with the incident beam orientation parallel (left) and perpendicular (right) to the coating direction. The dashed boxes highlight the in-plane π–π stacking peaks.