The ionic liq., 1-ethyl-3-methylimidazolium tetracyanoborate, was employed to prep. a thiolate/disulfide ionic liq. electrolyte with low viscosity for org. dye-sensitized solar cells (DSCs). CoS was introduced and showed better photovoltaic performance in DSCs than the ubiquitous platinized FTO CE.
Ulf Anders Hagfeldt, Sheng Meng, Sining Yun, Hang Liu