Browsing by Author "Kurniawan, Novriadi"

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    APLIKASI EKSTRAKSI ANTOSIANIN UBI JALAR UNGU DENGAN VARIASI PH PELARUT SEBAGAI DYE DALAM SEL SURYA PEWARNA TERSENSITISASI
    (2016-02-01) Kurniawan, Novriadi; Sugianto; Salomo
    Has been conducted a research of extraction anthocyanins from purple-fleshed sweet potatoes used as dye of Dye-Sensitized Solar Cells (DSSC) by using experimental method. This research was peformed to analyze the effect of degree of acidified solvents to DSSC performances. The Anthocyanin was obtained from purple-fleshed sweet potatoes from Pekanbarus’s traditional market. The extraction was carried out using 70% methanol and 7% acetic acid as the solvents. DSSC was built by arranging a sandwich structure,which are the active material of TiO2 wich has been immersed in dye for 24 ours, the electrolit wich has been made from KI and Iodine, the catalys wich has been made from pencil and candle. The Peformance of DSSC was measured by using a halogen lamp 50 Watt as a light source. The highest DSSC performance occurred at pH of 2,5 with the maximum current was 3,9 μA and the maximum voltage was 461 mV and the efficiency was 0,4149%, compared to the other solar cells wich have been made with different degree of acidified solvents, 0,0518% for dye with solvent at pH of 3, 0,0191% for dye with solvent at of pH 3,5, and 0% for dye with solvent pH of 4.