Novel fluoride-substituted donor/acceptor polymers containing benzodithiophene and quinoxaline units for use in low–band gap solar cells

Research progress and application of high efficiency organic solar cells based on benzodithiophene donor materials

“…Based on the main chain BDT-T-Qx-T, Qin and co-workers synthesized a series of novel polymer donors PBDT-TQ (2013) , PBDT-TTQ (2013) , PBDT-PTQ (2013) and PBDT-PTTQ (2013) , which were designed by introducing the functional side chain alkyloxy into the BDT as well as thiophene-based and benzene-based side chains into the Qx unit, in that turn. [198] Similarly,P(BDT-DTQx) (2013) was prepared by Fu et al; [92] PBDT-TDTQx (2016) andPBDT-TTDTQx (2016) were reported by Kim et al; [199] POF1 (2016) and POF2 (2016) were designed by Singh et al; [200] P3 (2022) was also prepared by Aslan and co-workers, respectively. [201] Notably, after blending with the acceptor PC 71 BM, PBDT-TDQx and PBDT-TTDTQx with the substitution of solubilized alkyl chain 2-butyloctyl effectively improve the miscibility of donor in the active layer.…”

“…[205] Subsequently, based on the reported results of P(1), PBQ-1 (2013) and PBQ-2 (2013) were synthesized by Liu et al; [206] PTF1 (2016) and PTF2 (2016) were explored by Singh and co-workers. [200] After blending with the acceptor PC 71 BM, P(1): PC 71 BM based, PBQ-1: PC 71 BM based, PBQ-2: PC 71 BM based, PTF1: PC 71 BM based and PTF2: PC 71 BM based OSCs obtained the V oc of 0.74, 0.63, 0.75, 0.72 and 0.72 V; J sc of 9.5, 12.39, 12.96, 4.97 and 8.70 mA/cm 2 ; FF of 53, 69.81, 63.14, 29 and 34%; and PCE of 3.7, 5.40, 6.13, 1.04 and 2.13%, respectively. Consistent with the aboveconclusions, P(1), PTF1 and PTF2 with a wider π-π conjugated plane enhance the V oc in corresponding OSC devices.…”