Creating sustainable and clean sources of energy is an outstanding problem of importance for the current generation of scientists to solve. Organic photovoltaics (OPVs) are a promising renewable energy source but require improvements to their architectures and better fundamental understanding of the effects of organic chromophore morphology on the resulting...
The development of organic photovoltaic devices benefits from understanding the fundamental processes underlying charge generation in thin films of organic semiconductors. This dissertation exploits model systems of π-stacked chromophores such as perylene-3,4:9,10-bis(dicarboximide) (PDI) and 3,6-bis(aryl)diketopyrrolopyrrole (DPP) to study these processes using ultrafast electronic and vibrational spectroscopy. In particular, the characterization...
