| Feature | Description |
| Feature #1 | Redox couple has to be capable to regenerate the oxidized dye efficaciously. |
| Feature #2 | Has to possess long-term chemical, thermal, and electrochemical stability. |
| Feature #3 | Should be non-corrosive with DSSC components. |
| Feature #4 | Has to be apt to let quick transfer of charge carriers, improve conductivity, and generate efficacious contact among the working and CEs. |
| Feature #5 | Absorption spectra of an electrolyte have not to overlap with the absorption spectra of a dye. |