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dc.contributor.author | Ziólek, Marcin | es_ES |
dc.contributor.author | Martín, Cristina | es_ES |
dc.contributor.author | Cohen, Boiko | es_ES |
dc.contributor.author | García Gómez, Hermenegildo | es_ES |
dc.contributor.author | Douhal, Abderrazzak | es_ES |
dc.date.accessioned | 2013-05-07T10:53:33Z | |
dc.date.issued | 2011-10-19 | |
dc.identifier.issn | 1932-7447 | |
dc.identifier.uri | http://hdl.handle.net/10251/28635 | |
dc.description.abstract | [EN] We report on femtosecond to millisecond (fs-ms) studies of the interactions of an e¿cient triphenylamine organic dye (TPC1) for photovoltaics with titanium-doped high porous MCM-41 (TiMCM-41) silicate materials in half and complete dye-sensitized solar cells (DSSCs). Stationary UV visible absorption results indicate a higher dye loading (3 5 times) per Ti atom in the TiMCM-41-based solar cells in comparison with those based on typical titania nanoparticles (NPs). However, the dye loading per Ti atom decreases with increasing the Ti doping, and the total dye content is still smaller in the TiMCM-41 solar cells than in the NP ones. Time-resolved emission studies showed that the average electron injection times (from TPC1 to the titania conduction band) are about 2.5 times longer for the TiMCM-41 solar cells (12 ps) than using the classical titania NP ones (4.5 ps). However, taking into account the slow internal deactivation of the dye in both materials, the yield of electron injection is >90%. Nanosecond to millisecond (ns-ms) ¿ash photolysis studies of ¿lms show that the (back) electron recombination from titania to the dye cation is slower using TiMCM-41 than that in the titania NPs (19¿s vs 7¿s). Similar experiments for complete solar cells indicate faster dye regeneration due to the electrolyte in the TiMCM-41 than in the titania NP devices (3¿s vs 8¿s). Therefore, from the point of view of interfacial charge separation, the results indicate comparable or even better performance of the TiMCM-41 than the typical titania nanoparticle. However, the solar cell performance and the total e¿ciency are much lower in the TiMCM-41 than in the NP devices. Additionally, the values of short-circuit current per Ti atom are higher for the NP devices, despite the higher dye content per Ti atom in TiMCM-41 samples. This suggests a strong limitation in the electron transport process along the TiMCM-41 channels. Hence, despite the promising interfacial properties observed in fast and ultrafast time scales, this kind of material needs further modi¿cation in terms of improving the total dye loading and the conductivity, in order to be suitable for DSSCs. | es_ES |
dc.description.sponsorship | The research leading to these results has received funding from the European Community's Seventh Framework Programme (FP7/2007-2013) under grant agreement no. 235286 (NANOSOL). This work was also supported by the MICINN through projects MAT2008-01609 and Consolider-Ingenio 2010 (CDS2009-00050). We thank Prof. Licheng Sun and Dr. Xichuan Yang for giving us the TPC1 dye, and Pedro Atienzar for his help in the preparation of solar cells. C.M. thanks the MEC for the Ph.D. fellowship, and B.C. thanks MICINN for the Ramon y Cajal fellowship. | en_EN |
dc.language | Inglés | es_ES |
dc.publisher | American Chemical Society | es_ES |
dc.relation.ispartof | Journal of Physical Chemistry C | es_ES |
dc.rights | Reserva de todos los derechos | es_ES |
dc.subject.classification | QUIMICA ORGANICA | es_ES |
dc.title | Virtues and Vices of an Organic Dye and Ti-Doped MCM-41 Based Dye-Sensitized Solar Cells | es_ES |
dc.type | Artículo | es_ES |
dc.embargo.lift | 10000-01-01 | |
dc.embargo.terms | forever | es_ES |
dc.identifier.doi | 10.1021/jp208274x | |
dc.relation.projectID | info:eu-repo/grantAgreement/MICINN//MAT2008-01609/ES/FEMTOCIENCIA Y MICROSCOPIA DE MOLECULAS UNICAS RESUELTA EN EL TIEMPO APLICADAS A LA NANOFOTONICA Y NANOMEDICINA/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/EC/FP7/235286/EU/From Femto- to Millisecond and From Ensemble to Single Molecule Photobehavior of Some Nanoconfined Organic Dyes for Solar Cells Improvement/ | en_EN |
dc.relation.projectID | info:eu-repo/grantAgreement/MICINN//CSD2009-00050/ES/Desarrollo de catalizadores más eficientes para el diseño de procesos químicos sostenibles y produccion limpia de energia/ | es_ES |
dc.rights.accessRights | Cerrado | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Departamento de Química - Departament de Química | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química - Institut Universitari Mixt de Tecnologia Química | es_ES |
dc.description.bibliographicCitation | Ziólek, M.; Martín, C.; Cohen, B.; García Gómez, H.; Douhal, A. (2011). Virtues and Vices of an Organic Dye and Ti-Doped MCM-41 Based Dye-Sensitized Solar Cells. Journal of Physical Chemistry C. 115(47):23642-23650. https://doi.org/10.1021/jp208274x | es_ES |
dc.description.accrualMethod | S | es_ES |
dc.relation.publisherversion | http://pubs.acs.org/doi/ipdf/10.1021/jp208274x | es_ES |
dc.description.upvformatpinicio | 23642 | es_ES |
dc.description.upvformatpfin | 23650 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.description.volume | 115 | es_ES |
dc.description.issue | 47 | es_ES |
dc.relation.senia | 214105 | |
dc.contributor.funder | European Commission | |
dc.contributor.funder | Ministerio de Ciencia e Innovación |