Co-Sensitized DSSC with Natural Dyes Extracted from Beetroot, Pomegranate and Cranberry

Perspectives of Organic Dyes Cosensitization and Its Utilization in TiO2 Nanoclusters for Photocatalysis Applications

“…Sensitizers play a crucial role in light harvesting ability and PCE in DSSCs. The excited electrons are injected into the conduction band of the TiO 2 electrode [34,35] and adsorb sensitizers (dye molecules) on the outer circuit of the transparent conductive oxide (TCO) and left oxidation dye molecules D [36], then upon photon absorption, dye molecules are excited from the HOMO to the LUMO. The dye is regenerated by supplying electrons from an electrolyte, mainly from a redox system (iodide/triiodide pair) in an organic solvent [1][2][3][4][5].…”

“…Although the energy conversion efficiency of DSSCs produced so far is lower than that of silicon cells, porphyrin-based DSSCs have achieved PCEs of more than 13%. Table 3 lists the different types of dyes and their % PCE, where we find different inorganic dyes examined [26,34,[36][37][38][39][40][41][42][43][44][45][46]. It has been reported that Pt can reach a higher PCE compared to the rest, [39] but, due to its high toxicity, it is not highly recommended to prevent unsafe consequences.…”