Researchers pave the way for large-scale, efficient organic solar cells with water treatment

Organic solar cells (OSCs), which use organic polymers to convert sunlight into electricity, have received considerable attention for their desirable properties as next-generation energy sources. These properties include its lightweight nature, flexibility, scalability, and a high power conversion efficiency (>19%). Currently, several strategies exist for enhancing the performance and stability of OSCs. However, a problem that remains is the difficulty of controlling the morphology of the active layer in OSCs when scaling up to large areas. This makes it challenging to obtain high-quality active layer thin films and, in turn, fine-tune the device efficiency.