Quinoxaline-functionalized C 60 derivatives as electron acceptors in organic solar cells

Two new quinoxaline-functionalized C ₆₀ derivatives with high LUMO levels have been synthesized and applied in organic solar cells. BHJ-OSCs incorporating P3HT as donor and TQMA (or TQBA ) as acceptor exhibit an open-circuit voltage ( V _OC ) of 0.76 V (or 0.84 V), which is about 0.12 V (or 0.20 V) higher than PCBM as electron acceptor.