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.