Int. J. Mol. Sci. 2011, 12(9), 5565-5576; doi:10.3390/ijms12095565
Article

New Dye-Sensitized Solar Cells Obtained from Extracted Bracts of Bougainvillea Glabra and Spectabilis Betalain Pigments by Different Purification Processes

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Received: 24 May 2011; in revised form: 3 August 2011 / Accepted: 17 August 2011 / Published: 30 August 2011
(This article belongs to the Section Material Sciences and Nanotechnology)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: The performance of a new dye-sensitized solar cell (DSSC) based in a natural dye extracted from the Bougainvillea spectabilis’ bracts, is reported. The performance of this solar cell was compared with cells prepared using extract of the Bougainvillea glabra and mixture of both extracts; in both cases the pigments were betalains, obtained from Reddish-purple extract. These dyes were purified to different extents and used for the construction of solar cells that were electrically characterized. The materials were characterized using FTIR and UV-Vis. Solar cells were assembled using TiO2 thin film on indium tin oxide (ITO)-coated glass; a mesoporous film was sensitized with the Bougainvillea extracts. The obtained solar energy conversion efficiency was of 0.48% with a current density JSC of 2.29 mA/cm2 using an irradiation of 100 mW/cm2 at 25 °C.
Keywords: dye-sensitized solar cell; betalain; natural dyes; solar energy; dip coating
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MDPI and ACS Style

Hernandez-Martinez, A.R.; Estevez, M.; Vargas, S.; Quintanilla, F.; Rodriguez, R. New Dye-Sensitized Solar Cells Obtained from Extracted Bracts of Bougainvillea Glabra and Spectabilis Betalain Pigments by Different Purification Processes. Int. J. Mol. Sci. 2011, 12, 5565-5576.

AMA Style

Hernandez-Martinez AR, Estevez M, Vargas S, Quintanilla F, Rodriguez R. New Dye-Sensitized Solar Cells Obtained from Extracted Bracts of Bougainvillea Glabra and Spectabilis Betalain Pigments by Different Purification Processes. International Journal of Molecular Sciences. 2011; 12(9):5565-5576.

Chicago/Turabian Style

Hernandez-Martinez, Angel Ramon; Estevez, Miriam; Vargas, Susana; Quintanilla, Fracisco; Rodriguez, Rogelio. 2011. "New Dye-Sensitized Solar Cells Obtained from Extracted Bracts of Bougainvillea Glabra and Spectabilis Betalain Pigments by Different Purification Processes." Int. J. Mol. Sci. 12, no. 9: 5565-5576.

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