Electrical Properties of Roystonea regia Fruit Extract as Dye Sensitized Solar Cells
Utilizing solar energy in producing electricity can minimize environmental pollution generated by fossil fuel in producing electricity. Our research was base on the extraction of dye from Roystonea regia fruit by using methanol as solvent. The dye extracts were used as sensitizers in Dye-sensitized solar cell (DSSCs). Study was done on the electrical properties from the extracts of Roystonea regia fruit as Dye-sensitized solar cell (DSSCs). The absorptions of the extracts and extracts with dye were determined at different wavelengths (350-1000nm). Absorption peak was observed at 1.339 at wavelength 400nm. The obtained values for methanol extract Roystonea regia extract are, Imp = 0.015mA, Vmp = 12.0mV, fill factor = 0.763, Isc= 0.018 mA and Voc = 13.1 mV and efficiency of 0.32%. .The phytochemical screening was taken and it was observed that Roystonea regia extract contained less of anthocyanin compared to flavonoids. The nanostructured dye sensitized solar cell (DSSC) will provide economically credible alternative to present day silicon p–n junction photovoltaic.
 H. Gerischer, M. E. Michel-Beyerle, F. Rebentrost, H.Tributsch, "Sensitization of charge into semiconductors with large band gap,” Electrochim. Acta, 13(6), pp 1509-1515, 1968.
 H. Tsubomura, M. Matsumura, Y. Nomura, T. Amamiya, "Dye sensitized Zinc oxide: aqueous electrolyte platinum photocell, Nature,”261, pp 402, 1976.
 J. Desilvestro, M. Grätzel, L. Kavan,J. E. Moser, J. Augustynski, "Highly Efficient Sensation of Titanium Dioxide,” J. Am. Chem. Soc. 107 (10),pp 2988-2990, 1985.
 M. Grätzel, "Photovoltaic and Photoelectrochemical conversion of solar energy,” Philos. Trans. R. Soc. London, 365, pp 993-1005, 2007.
 B. O'Regan, M. Gratzel, "TiO- Based photovoltaics,” Nature 353, pp 737-740, 1991.
 S. Ali,"Biomimicry in Solar Energy Conversion With Natural Dye Sensitized Nanocrystalline Photovoltaic Cells,”Department of Chemistry and Biochemistry Obelin College, Ohio,pp 1-22, 2007.
 A. Maddu, A. M. Zuhri.Irmansyah, ”Use Red Cabbage Extract Anthocyanins As Fotosentizer In TiO2 Nano crystal Solar Cells sensitized Dye,” Makara journal of Technology, vol 1 (2),2007.
 Q. Wang, J. E. Moser, M. Gra1tzel, "Electrochemical Impedance Spectroscopic Analysis of Dye-Sensitized Solar Cells,” J. Phys. Chem. B, 109, pp14945-14953, 2005.
 C. A. Kelly,G. J. Meyer, "Excited state processes at sensitized nanocrystalline thin film semiconductor interfaces,” Coordination Chemistry Reviews. Vol. 211, pp.295, 2001.
 K. Hara, H. Arakawa, ”Dye-sensitized Solar Cells,” In: Handbook of Photovoltaic Science and Engineering (A. Luque and S. Hegedus, (Ed.)),” (15), pp. 663-700, 2003.
 S. Zona K. Scoot, O. F. Cook, W. Bartram "proposal to conserve Oreodoxaregia , the Basionym of Roystonearegia (Kunth) against Palma elata. (Arecaceae),” Taxon 43,(4): pp 662-64, 1994.
 K. F. Connor, "Tropical tree seed manual,” Washington DC: USDA Forest Service Agriculture Handbook 721, pp 698-700, 2002.
 D. F. Austin, "Florida Ethnobotany.”CRC Press LLC, Boca Raton, FL. 2004.
 K.E. Jasim, A. M. Hassan, "Nanocrystalline TiO2 based natural dye sensitised solar cells,” Int. J. Nanomanufacturing, Vol. 4, Nos. 1/2/3/4, pp.242–247, 2009.
 M. Gratzel, "Dye-sensitized solar cells,” Journal of Photochemistry and Photobiology C: Photochemistry Reviews 4, pp. 145–153, 2003.
 M. Gratzel, "Solar Energy Conversion by Dye-Sensitized Photovoltaic Cells,” Inorg, Chem., Vol. 44, pp. 6841-6851, 2005.