Dye characteristics of Zingiber officinale var rubrum, Cinnamomum zaylanicum, Curcuma longa L., Oryza sativa L. Indica in dye sensitized solar cell (DSSC)

The aims of the research to were know performance of DSSC using the dye of Zingiber, Cinnamomum, Curcuma, and Oryza as a photosensitizer with a variation of dye deposition area with spin coating techniques. The structure of the samples as a sandwich consisting of the working electrode (TiO₂), dye, electrodes of platinum (Pt) and the electrolyte sandwiched between two electrodes. Test absorbance dye using UV-Visible Spectrophotometer Lambda 25, using a two-point conductivity test probes El Kahfi 100 and characterization test IV using a Keithley 2602A. For Zingiber results showed that absorbance at 243 nm and 279 nm, photoconductivity of 0.29 Ω^-1m^-1 and the efficiency is 0.015% on 0.5 cm². Cinnamomum results showed that absorbance at 253 nm and 403 nm, photoconductivity of 0.11 Ω^-1m^-1 and the efficiency is 0.002% on 3 cm². Curcuma results showed that absorbance at 243 nm and 422 nm, photoconductivity of 0.177 Ω^-1m^-1 and the efficiency is 0.072% on 3 cm². Oryza results showed that absorbance at 240 nm and 423 nm, photoconductivity of 0.21 Ω^-1m^-1 and the efficiency is 0.04% on 2.25 cm². Best absorbance value was obtained from Oryza dye; the highest photoconductivity was obtained from Zingiber dye, and the highest efficiency was obtained from Curcuma dye.