Excitation transfer in polymer photodiodes for enhanced quantum efficiency

The realization of polymer solar cells is the driving force behind this research. In an idea inspired by photosynthesis, the authors have constructed efficient bilayer photodiodes by a well-chosen combination of conjugated polymers (see Figure) in the donor layer. Förster energy transfer within the donor layer allows the absorbed light to be channeled to the C60 acceptor layer, improving the total photoconversion of the blend device