Dual functions of a novel low-gap polymer for near infra-red photovoltaics and light-emitting diodes

摘要

We have synthesised and characterised a new low-gap conjugated polymer, with a broad absorption profile. In blends with a C70 derivative we demonstrate power conversion efficiencies of 0.76%. We show electroluminescence from the polymer peaking at 956 nm, and quantum efficiency of 0.02% in a blend. Conjugated polymers have shown great potential for polymer photovoltaics (PVs) and light-emitting diodes (PLEDs) due to their low cost, easy manufacture, and mechanical flexibility.