Achieving small non-radiative energy loss through synergically non-fullerene electron acceptor selection and side chain engineering in benzo[1,2-b:4,5-b′]difuran polymer-based organic solar cells

The energy losses of benzo[1,2-b:4,5-b′]difuran polymers (P-FT and P-FP) with different side chains were systemically investigated by applying two representative electron acceptors (m-ITIC and Y6) in organic solar cells.