Structural/morphological monitoring approach to stability and durability issues of photoactive films for organic solar cells

► Effect of light on structural/morphological properties of photoactive layers for OPVs. ► Time resolved X-ray, AFM and FTIR cross monitoring techniques were applied. ► The crystallization kinetics of the organic film molecules was followed in real time. ► A comprehensive picture of the chemical/physical process concurring to the devices photo-activelayers aging was gained.