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South Italy Local Grapes cultivar as a Source of Natural Sensitizers in Dye-sensitized Solar Cells

[ Vol. 7 , Issue. 2 ]

Author(s):

Sandro Lattante*, Giuseppe De Benedetto, Daniela Rizzo and Marco Anni   Pages 165 - 171 ( 7 )

Abstract:


Objective: We show that anthocyanines extracted from 3 different local cultivar of grapes characteristic of the South Italian region named ''Salento'' can effectively act as naturefriendly and eco-sustainable sensitizers in Dye-sensitized Solar Cells (DSSC) type devices.

Methods: The natural pigments have been extracted in a simple way immersing both the whole fruits and the fruit epicarps in methanol and in an ultrasonic bath, without any further purification step.

Observation: The measured open circuit voltage and the fill factors are among the best values reported in literature. We compare the effectiveness of the extraction process from fermented and from fresh grapes, showing that the devices realized starting from the fresh fruit epicarps perform slightly better than those realized starting from the fermented fruit.

Conclusion: We correlate this behavior with an interaction of different dye molecules in the device.

Keywords:

Solar energy conversion, natural dyes, DSSC, anthocyanines, grapes, sustainability.

Affiliation:

Dipartimento di Matematica e Fisica ''Ennio De Giorgi'', Università del Salento, via per Arnesano, 73100 Lecce, Dipartimento di Beni Culturali, Università del Salento, 73100 Lecce, Dipartimento di Beni Culturali, Università del Salento, 73100 Lecce, Dipartimento di Matematica e Fisica ''Ennio De Giorgi'', Università del Salento, via per Arnesano, 73100 Lecce

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