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Energy derived from fossils is diminishing and cannot be renewed. Therefore many experts are looking for other alternatives to create new renewable energy, and Dye-sensitized solar cells (DSSC) are one of them. This study aims to know the characterization of the electrical properties of dye cosmos caudatus material. The research was conducted at the UNS FMIPA Materials Laboratory. This research uses the TiO2 deposition method with the spin coating technique. Absorbance test using PC UV Visible Spectrophotometer 1601 and Current and voltage test (I-V) using Keithley. The efficiency produced by the Cosmos caudatus chlorophyll dye was 8.3 × 10−3 %. These results show that some natural dyes from natural organic material extraction have an absorbance spectrum range of 300-800 nm, which has the potential as DSSC.

The study aims to characterize Ruthenium as a photosensitizer in Dye-Sensitized Solar Cells (DSSC). Samples are made in the structure of the working electrode pair Sandwich and the opponent electrode. Sample absorbance test using UV-Visible LAMBDA 25 spectrophotometer and test current and voltage characterization (I-V) using Keithley 2602A. The results of the study showed that the maximum absorbance in the high dye ruthenium appeared at the two peaks at 448 nm and 580 nm. While I-V curve measurements showed great efficiency that resulted in ruthenium dye with concentrations of 0.1, 0.5, and 1 in a row were 0, 12%, 0.186%, and 0.26%. These results show that higher concentrations of ruthenium dye can increase the value of the resulting efficiency.

Energy derived from fossil the decrease and cannot renewable. Thus many experts looking at other alternatives to create new energy that is renewable and dye-sensitized solar cells (DSSC) is one of them. The study aims to determine the characteristic of the electrical properties of each dye material natural organic, characteristic of the electrical properties of the dye material combined with Poly(3-Hexylthiophene) (P3HT). Sample testing conducted at the Laboratory of UV-Vis Spectroscopy, P3HT electrical properties combined with dye extracts will be investigated using IV Meter El - Kahfi. Test optical properties, electrical properties, and I-V characterization of the DSSC using UV Visible Spectrophotometer 1601 PC and Keitlay Type 2600A, respectively.