Dicyanovinyl and Cyano-Ester Benzoindolenine Squaraine Dyes: The Effect of the Central Functionalization on Dye-Sensitized Solar Cell Performance

Simone Galliano, Vittoria Novelli, Nadia Barbero, Alessandra Smarra, Guido Viscardi, Raffaele Borrelli, Frédéric Sauvage and Claudia Barolo
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Simone Galliano: NIS and INSTM Reference Centre, Department of Chemistry, University of Torino, Via Pietro Giuria 7, Torino 10125, Italy
Vittoria Novelli: Laboratoire de Réactivité et Chimie du Solide (UMR-CNRS 7314), Université de Picardie Jules Verne, 33 Rue Saint-Leu, Amiens Cedex 80039, France
Nadia Barbero: NIS and INSTM Reference Centre, Department of Chemistry, University of Torino, Via Pietro Giuria 7, Torino 10125, Italy
Alessandra Smarra: NIS and INSTM Reference Centre, Department of Chemistry, University of Torino, Via Pietro Giuria 7, Torino 10125, Italy
Guido Viscardi: NIS and INSTM Reference Centre, Department of Chemistry, University of Torino, Via Pietro Giuria 7, Torino 10125, Italy
Raffaele Borrelli: Dipartimento di Scienze Agrarie, Forestali e Alimentari, University of Torino, Largo Paolo Braccini 2, Grugliasco 10095, Italy
Frédéric Sauvage: Laboratoire de Réactivité et Chimie du Solide (UMR-CNRS 7314), Université de Picardie Jules Verne, 33 Rue Saint-Leu, Amiens Cedex 80039, France
Claudia Barolo: NIS and INSTM Reference Centre, Department of Chemistry, University of Torino, Via Pietro Giuria 7, Torino 10125, Italy

Energies, 2016, vol. 9, issue 7, 1-16

Abstract: In order to achieve a greater light absorption in the near-infrared (NIR) region with a panchromatic spectral response and to suppress the photo-isomerisation phenomenon, we herein report the design, synthesis, spectroscopic and electrochemical characterization of novel centrally functionalized symmetric benzoindolenine squaraine dyes. These molecules have shown different photoelectrical conversion properties, depending on the dicyanovinyl and cyano-ester group substitution on the squaric core unit and on the extension of the ?-conjugation.

Keywords: dye-sensitized solar cells; NIR-sensitizers; squaraines; central functionalization (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2016
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