Impact of PY-IT polymer acceptor third-component and of GOPS-doped PEDOT:PSS interfacial layer on the structural properties of a photoactive

We aim to investigate the structural properties of new blend active layers with polymer acceptors composing stretchable organic solar cells, as
well as the impact of intermediate layers and electrodes on the mechanical behavior of the whole stacks. We will study binary and ternary polymer blend
behaviour in multilayers and devices for outdoor applications, and we will focus on the relationship between the evolution of crystallinity, the mechanical
and the electrical behavior of semi-conducting polymer thin layers, buffer layers (PEDOT:PSS, ZnO) and solar cell stacks during mechanical loading. The
structural properties of the individual materials as well as their properties when incorporated in a device stack will be investigated by in situ
grazing incidence X-ray diffraction under applied uniaxial tensile stretching. The structural behavior will be linked to the electronic properties of
the layers and the entire cell, in order to figure out more stretchresilient flexible devices.