Organic photovoltaic devices are promising candidates for a future energy production
at low-costs. In the framework of this thesis, fundamental aspects of organic solar cells
based on different blend systems were investigated. X-ray scattering revealed a strong
dependency of the inner film morphology of such devices on the layer thickness and the
film composition. Applying optical methods, an enhanced photochemical degradation of
blend films upon UV-irradiation was observed if compared to pure homopolymer samples.
Furthermore, novel imprinting routines have been developed for the fabrication of structured
polymer films with feature dimensions on the micro- and nanoscale. Making use of
such textured films in organic photovoltaic devices, the power conversion efficiency was
improved due to an diffraction-induced increase in optical absorption.
«
Organic photovoltaic devices are promising candidates for a future energy production
at low-costs. In the framework of this thesis, fundamental aspects of organic solar cells
based on different blend systems were investigated. X-ray scattering revealed a strong
dependency of the inner film morphology of such devices on the layer thickness and the
film composition. Applying optical methods, an enhanced photochemical degradation of
blend films upon UV-irradiation was observed if compared to p...
»