The effect of photoelectrode TiO2 layer thickness to the output power of chlorophyll-based Dye-Sensitized Solar Cell (DSSC)

DSSC (Dye-Sensitized Solar Cell) is conducted by doctor blading TiO₂ deposition method to the substrate material. Couple of TCOs (Transparent Conductive Oxide) of Indium Thin Oxide are used as substrate of photo electrode and counter electrode. The variation of TiO₂ layer thickness is deposited on to photo electrode layer by adjusting level of masker thickness. The variation of masker layers are used of 100, 200, and 300 μm thickness. The DSSC structure is designed by combination of TCO glass, TiO₂ nanoparticle, natural chlorophyll dye ectract from jatropha leaves, electrolyte solution and carbon layer. A extracted chlorophyll absorbance spectra is investigated by UV-1601 spectrophotometer at 200-800 nm wavelength. According to the DSSC measurement by 7 watt LED lamp, it was obtained the maximum electrical characteristic of open voltege circuit V_oc and sort circuit current I_sc are 321 mV and 15.2 μA, respectively. The maximum output power was achieved by 292 μm TiO₂ layer thicness of 1008 × 10^-9W produced by 292 μm layer thickness applied on 1.7×1.7 cm active area of DSSC.