http://www.cnr.it/ontology/cnr/individuo/prodotto/ID263021

Spectroscopic and Morphological Studies of Metal-Organic and Metal-Free Dyes onto Titania Films for Dye-Sensitized Solar Cells (Articolo in rivista)

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Spectroscopic and Morphological Studies of Metal-Organic and Metal-Free Dyes onto Titania Films for Dye-Sensitized Solar Cells (Articolo in rivista) (literal)

Anno

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Alternative label

Gabriella Di Carlo, Daniela Caschera, Roberta G. Toro, Cristina Riccucci, Gabriel M. Ingo, Giuseppina Padeletti, Luisa De Marco, Giuseppe Gigli, Giovanna Pennesi, Gloria Zanotti, Anna M. Paoletti, and Nicola Angelini (2013)
Spectroscopic and Morphological Studies of Metal-Organic and Metal-Free Dyes onto Titania Films for Dye-Sensitized Solar Cells
in International Journal of Photoenergy (Print); Hindawi Publishing Corporation, Cairo (Egitto)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Gabriella Di Carlo, Daniela Caschera, Roberta G. Toro, Cristina Riccucci, Gabriel M. Ingo, Giuseppina Padeletti, Luisa De Marco, Giuseppe Gigli, Giovanna Pennesi, Gloria Zanotti, Anna M. Paoletti, and Nicola Angelini (literal)

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Note

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Institute for the Study of Nanostructured Materials (ISMN), CNR, Via Salaria km 29300, Monterotondo, 00015 Rome, Italy Center for Biomolecular Nanotechnologies (CBN), Fondazione Istituto Italiano di Tecnologia, Energy Platform Via Barsanti, Arnesano, 73010 Lecce, Italy National Nanotechnology Laboratory (NNL), CNR Istituto Nanoscienze, c/o Distretto Tecnologico, Via Arnesano km 5, 73100 Lecce, Italy Department of Mathematics and Physics \"E. De Giorgi\", University of Salento, Via per Arnesano, 73100 Lecce, Italy Institute of Structure of Matter (ISM), CNR, Via Salaria km 29300, Monterotondo, 00015 Rome, Italy (literal)

Titolo

Spectroscopic and Morphological Studies of Metal-Organic and Metal-Free Dyes onto Titania Films for Dye-Sensitized Solar Cells (literal)

Abstract

We have investigated the spectroscopic behavior of three different sensitizers adsorbed onto titania thin films in order to gain information both on the electron transfer process from dye to titania and on the anchorage of the chromophore onto the semiconductor. We have examined by UV-Vis and fluorescence spectroscopy the widely used ruthenium complex cis-di(thiocyanato)bis(2,2?-bipyridyl-4,4?-dicarboxylato)ruthenium(II) (N719), the more recently developed organic molecular 3-(5-(4-(diphenylamino)styryl)thiophen-2-yl)-2-cyanoacrylic acid (D5), and a push-pull zinc phthalocyanine sensitizer (ZnPc). Three type of titania films with different morphology, characterized by SEM and FT-IR measurement, were considered: a mesoporous transparent film deposited by spin-coating (TiMS), a semiopaque film deposited by doctor-blade from mesoporous titania (TiMS_DB) and a semiopaque film deposited by doctor-blade form commercial P25 titania (P25_DB). The use of TiMS is responsible for the adsorption of a higher amount of dye since the mesoporous structure allows increasing the interfacial area between dye and titania. Moreover, the fluorescence emission peak is weaker when the sensitizers are adsorbed onto TiMS. These findings suggest that mesostructured films could be considered the most promising substrates to realize photoanodes with a fast electron transfer process. (literal)

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