“…From the beginning of polymeric electrolyte application in DSSCs, synthetic polymers have been used extensively in pristine, mixed, and composite forms including nanocomposites of many inorganic additives. ,− Some of the most commonly used synthetic polymers for the preparation of electrolytes are poly(ethylene oxide), ,,− ,− poly(propylene oxide), − poly(acrylonitrile), − poly(butyl acrylate), , poly(methyl methacrylate), poly(vinyl chloride), , poly(vinyl pyrrolidinone), − poly(vinylidene fluoride), − and poly(vinylidene fluoride-hexafluoropropylene). − However, as these polymers are synthetically manufactured and not ecofriendly, recently much attention has been given to the possible application of biopolymers in DSSCs. Among many biopolymers, polysaccharides like cellulose, − carrageenan, ,− agarose, ,−…”