Co-Sensitization Promoted Light Harvesting Capability of Dye-Sensitized Solar Cell (DSSC) Using Anthocyanin-Based Dye
High efficiency of light-to-energy conversion in dye-sensitized solar cell (DSSC) was achieved by applying anthocyanin as photosensitizer and TiO2 as photoelectrode. TiO2 anatase phase was synthesized by using co-precipitation method from TiCl3 precipitate. Anthocyanin (A) from Garcinia mangostana pericarp was combined with β-carotene (B) from Daucus carota and curcumin (C) pigments from Curcuma longa. According to UV-Vis analysis the wavelength absorptions of anthocyanin, β-carotene, and curcumin are 399 nm, 471 nm, and 470 nm, respectively. The A–B–C produced the short-circuit current density (JSC) of 77.7 μA, the open-circuit voltage (VOC) of 343.2 mV, the fill factor (FF) of 32.3, and the efficiency (η) of 0.042%. It is found that there exists a synergistic effect between anthocyanin and curcumin as indicated by broader absorption wavelengths, whilst the mixture between anthocyanin and β-carotene does not show the synergistic effect. The high efficiency of layered co-sensitization is attributed to the high adsorption capacities of curcumin in the outer layer. On the other hand, the effect can be explained on the basis of light scattering effect.
Risa Suryana, Kuwat Triyana, Khairurrijal, Heru Susanto and Sutikno
I. Eka Putri et al., "Co-Sensitization Promoted Light Harvesting Capability of Dye-Sensitized Solar Cell (DSSC) Using Anthocyanin-Based Dye", Advanced Materials Research, Vol. 1123, pp. 325-328, 2015