Photovoltaic effect based on pyrazole derivatives

The challenge of this work was to test two new electron donating dyes in photovoltaic cells of standard layered architecture. The active layer was a blend containing electron donating polymer poly(3-octyl)thiophene (P3OT) and a pyrazole derivative dye serving as electron acceptor. Optimized photovoltaic efficiency was observed for sample with 50% wt. load of the dye.