Anion Effect on the Cu-Neocuproine Mediator and Its Electrocatalysts for Dye-Sensitized Solar Cells: Polymeric Chalcogenides of PEDOT-PEDTT and [Ag(SePh)].

The synthetical methodology for the [Cu(dmp)] (dmp = 2,9-dimethyl-1,10-phenanthroline; neocuproine) complexes has been systematically investigated by using various copper precursors, including CuCl, Cu(NO), and Cu(ClO). After an anion exchange to trifluoromethanesulfonimide (TFSI), the tetra-coordinated Cu(dmp)(TFSI)-Cu(ClO) (7.43%) outperformed the penta-coordinated Cu(dmp)(TFSI)(NO)-Cu(NO) (4.