Spectroscopic and Morphological Studies of Metal-Organic and Metal-Free Dyes onto Titania Films for Dye-Sensitized Solar Cells
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 fluor...
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| Language: | English |
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Wiley
2013-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2013/582786 |
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| author | 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 Nicola Angelini |
| author_facet | 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 Nicola Angelini |
| author_sort | Gabriella Di Carlo |
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| description | 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. |
| format | Article |
| id | doaj-art-f7cfba00acf9478ba2d7491297383ec6 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-f7cfba00acf9478ba2d7491297383ec62025-02-03T05:58:37ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2013-01-01201310.1155/2013/582786582786Spectroscopic and Morphological Studies of Metal-Organic and Metal-Free Dyes onto Titania Films for Dye-Sensitized Solar CellsGabriella Di Carlo0Daniela Caschera1Roberta G. Toro2Cristina Riccucci3Gabriel M. Ingo4Giuseppina Padeletti5Luisa De Marco6Giuseppe Gigli7Giovanna Pennesi8Gloria Zanotti9Anna M. Paoletti10Nicola Angelini11Institute for the Study of Nanostructured Materials (ISMN), CNR, Via Salaria km 29300, Monterotondo, 00015 Rome, ItalyInstitute for the Study of Nanostructured Materials (ISMN), CNR, Via Salaria km 29300, Monterotondo, 00015 Rome, ItalyInstitute for the Study of Nanostructured Materials (ISMN), CNR, Via Salaria km 29300, Monterotondo, 00015 Rome, ItalyInstitute for the Study of Nanostructured Materials (ISMN), CNR, Via Salaria km 29300, Monterotondo, 00015 Rome, ItalyInstitute for the Study of Nanostructured Materials (ISMN), CNR, Via Salaria km 29300, Monterotondo, 00015 Rome, ItalyInstitute for the Study of Nanostructured Materials (ISMN), CNR, Via Salaria km 29300, Monterotondo, 00015 Rome, ItalyCenter for Biomolecular Nanotechnologies (CBN), Fondazione Istituto Italiano di Tecnologia, Energy Platform Via Barsanti, Arnesano, 73010 Lecce, ItalyCenter for Biomolecular Nanotechnologies (CBN), Fondazione Istituto Italiano di Tecnologia, Energy Platform Via Barsanti, Arnesano, 73010 Lecce, ItalyInstitute of Structure of Matter (ISM), CNR, Via Salaria km 29300, Monterotondo, 00015 Rome, ItalyInstitute of Structure of Matter (ISM), CNR, Via Salaria km 29300, Monterotondo, 00015 Rome, ItalyInstitute of Structure of Matter (ISM), CNR, Via Salaria km 29300, Monterotondo, 00015 Rome, ItalyInstitute of Structure of Matter (ISM), CNR, Via Salaria km 29300, Monterotondo, 00015 Rome, ItalyWe 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.http://dx.doi.org/10.1155/2013/582786 |
| spellingShingle | 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 Nicola Angelini Spectroscopic and Morphological Studies of Metal-Organic and Metal-Free Dyes onto Titania Films for Dye-Sensitized Solar Cells International Journal of Photoenergy |
| title | Spectroscopic and Morphological Studies of Metal-Organic and Metal-Free Dyes onto Titania Films for Dye-Sensitized Solar Cells |
| title_full | Spectroscopic and Morphological Studies of Metal-Organic and Metal-Free Dyes onto Titania Films for Dye-Sensitized Solar Cells |
| title_fullStr | Spectroscopic and Morphological Studies of Metal-Organic and Metal-Free Dyes onto Titania Films for Dye-Sensitized Solar Cells |
| title_full_unstemmed | Spectroscopic and Morphological Studies of Metal-Organic and Metal-Free Dyes onto Titania Films for Dye-Sensitized Solar Cells |
| title_short | Spectroscopic and Morphological Studies of Metal-Organic and Metal-Free Dyes onto Titania Films for Dye-Sensitized Solar Cells |
| title_sort | spectroscopic and morphological studies of metal organic and metal free dyes onto titania films for dye sensitized solar cells |
| url | http://dx.doi.org/10.1155/2013/582786 |
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