| abstract |
The present invention discloses inexpensive ionic liquid based electrolytes comprising a compound of a formula selected from: Formula 1 : M 2 S/M 2 S n , Formula 2: MHS/MHS n and mixtures thereof, where M is an organic cation, thus containing a sulphide or hydrosulphide/polysulfide anion and an organic cation serving as a redox electrolyte suitable for use in electrochemical and/or optoelectronic devices, in particular dye or semiconductor (thin film or quantum dot) sensitised solar cells. These ionic liquid electrolytes have moderate viscosity and can be used without a solvent. |