Fig. 1: Device structure and materials.

a Schematic of the intrinsically stretchable organic photovoltaics (IS-OPVs) configured as polyurethane (PU)//conductive PEDOT:PSS with 5 mg mL−1 ION E//PEDOT:PSS hole-transporting layer (HTL)//Ter-D18:Y6//eutectic gallium–indium (EGaIn). b Chemical structures of the electrode materials and active materials in the IS-OPVs.