In this work, we report a conjugated molecule INMB-F that can act as a molecular bridge via electrostatic force to enhance the intermolecular stacking of a range of BDT-based polymer donors (PTB7-Th, D18-Cl, PM6), which enabled a maximum PCE of 19.4% (certified 18.96%) inn PM6/L8-BO binary OSCs, among the highest reported efficiencies of binary OSCs.
|