Natural dyes, extracted from cherry, blackberry, blueberry, raspberry and strawberry fruits, were used as sensitizers to fabricate dye-sensitized solar cells (DSSCs). The conversion efficiency (h%) ranged from 0.14 to 0.69. Specifically, the highest h% was obtained from the dye extracted with ethanol 70% from blueberry fruit and epicarp (1.13 and 0.75, respectively), without other chemicals, pH adjustments and thermal or purification processes. The absorbance spectra of the dyes and their photoelectrochemical performances demonstrated that anthocyanins (ANCs) were the most effectual component of the sensitizer for DSSC. To check the affinity of the dyes for the TiO2 a new adsorption/desorption procedure was established. The comparison of the percentage distribution of each anthocyanin class in blueberry epicarp dye, before its adsorption and after its recovery from TiO2 powder, showed a better sensitizing performance of delphinidine derivatives compared to the other ANCs.

Teoli, F., Lucioli, S., Nota, P., Frattarelli, A., Matteocci, F., DI CARLO, A., et al. (2016). Role of pH and pigment concentration for natural dye-sensitized solar cells treated with anthocyanin extracts of common fruits. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. A, CHEMISTRY, 316, 24-30 [10.1016/j.jphotochem.2015.10.009].

Role of pH and pigment concentration for natural dye-sensitized solar cells treated with anthocyanin extracts of common fruits

MATTEOCCI, FABIO;DI CARLO, ALDO;FORNI, CINZIA
2016-01-01

Abstract

Natural dyes, extracted from cherry, blackberry, blueberry, raspberry and strawberry fruits, were used as sensitizers to fabricate dye-sensitized solar cells (DSSCs). The conversion efficiency (h%) ranged from 0.14 to 0.69. Specifically, the highest h% was obtained from the dye extracted with ethanol 70% from blueberry fruit and epicarp (1.13 and 0.75, respectively), without other chemicals, pH adjustments and thermal or purification processes. The absorbance spectra of the dyes and their photoelectrochemical performances demonstrated that anthocyanins (ANCs) were the most effectual component of the sensitizer for DSSC. To check the affinity of the dyes for the TiO2 a new adsorption/desorption procedure was established. The comparison of the percentage distribution of each anthocyanin class in blueberry epicarp dye, before its adsorption and after its recovery from TiO2 powder, showed a better sensitizing performance of delphinidine derivatives compared to the other ANCs.
2016
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore BIO/01 - BOTANICA GENERALE
Settore ING-INF/01 - ELETTRONICA
English
Con Impact Factor ISI
Anthocyanins Berry fruits Cherry DSSC Solvent Natural dyes
Teoli, F., Lucioli, S., Nota, P., Frattarelli, A., Matteocci, F., DI CARLO, A., et al. (2016). Role of pH and pigment concentration for natural dye-sensitized solar cells treated with anthocyanin extracts of common fruits. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. A, CHEMISTRY, 316, 24-30 [10.1016/j.jphotochem.2015.10.009].
Teoli, F; Lucioli, S; Nota, P; Frattarelli, A; Matteocci, F; DI CARLO, A; Caboni, E; Forni, C
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/174939
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