On September 12 Romualdas Jonas Čepas successfully defended his PhD thesis “Studies of charge carrier recombination and transport in disordered materials and their application in optoelectronic devices”.
The focus of this dissertation encompasses several research areas within the development of organic solar cells (OSC), ranging from charge transport and recombination processes and their characterization methods to blend morphology and its stabilization. It analyzes charge carrier transport and recombination mechanisms and improves methods that provide a better understanding of how these processes depend on carrier concentration and processing additives. Significant attention is given to blend morphology, and novel fluorene-based bipolar charge-transporting materials are investigated, which can optimize charge transport and enhance overall device performance. This work contributes to the advancement of organic solar cells and, in turn, to the creation of a sustainable energy future.
Research Supervisor was Dr Kristijonas Genevičius.
Wishing Romualdas Jonas further success in his professional journey, and celebrating his contribution to innovation through this remarkable achievement.