Journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume 117, Issue -, Pages 702-706Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2013.09.019
Keywords
Seaweeds; Dye-sensitized solar cells; Solar energy; Natural dyes; Undaria pinnatifida; Venice Lagoon
Categories
Funding
- CNR
- EFOR Project
- PON - Industrial: Progetto FotoRiduCO2 [PON01_02257]
- PON - Industrial: ENERGETIC [PON02_00665]
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Chlorophylls based-dyes obtained from seaweeds represent attractive alternatives to the expensive and polluting pyridil based Ru complexes because of their abundance in nature. Another important characteristic is that the algae do not subtract either cropland or agricultural water, therefore do not conflict with agro-food sector. This pigment shows a typical intense absorption in the UV/blue (Soret band) and a less intense band in the red/near IR (Q band) spectral regions and for these reasons appear very promising as sensitizer dyes for DSSC. In the present study, we utilized chlorophylls from samples of the brown alga Undaria pinnatifida as sensitizer in DSSCs. The dye, extracted by frozen seaweeds and used without any chemical purification, showed a very good fill factor (0.69). Even the photelectrochemical parameters if compared with the existent literature are very interesting. (C) 2013 Elsevier B.V. All rights reserved.
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