Interfacial charge recombination between e−− TiO2 and the I−/I3− electrolyte in ruthenium heteroleptic complexes: dye molecular structure−open circuit voltage relationship

Hdl Handle:
http://hdl.handle.net/10149/596724
Title:
Interfacial charge recombination between e−− TiO2 and the I−/I3− electrolyte in ruthenium heteroleptic complexes: dye molecular structure−open circuit voltage relationship
Authors:
Reynal, A. (Anna); Forneli, A. (Amparo); Martinez-Ferrero, E. (Eugenia); Sánchez-Díaz, A. (Antonio); Vidal-Ferran, A. (Antón); O’Regan, B. C. (Brian); Palomares, E. (Emilio)
Affiliation:
Teesside University, School of Science & Engineering.
Citation:
Reynal, A.; Forneli, A.; Martinez-Ferrero, E.; Sanchez-Diaz, A.; Vidal-Ferran, A.; O'Regan, B. C.; Palomares, E. (2008) 'Interfacial charge recombination between e−− TiO2 and the I−/I3− electrolyte in ruthenium heteroleptic complexes: dye molecular structure−open circuit voltage relationship' Journal of the American Chemical Society; 130 (41): 13558
Publisher:
American Chemical Society
Journal:
Journal of the American Chemical Society
Issue Date:
15-Oct-2008
URI:
http://hdl.handle.net/10149/596724
DOI:
10.1021/ja800513m
Additional Links:
http://pubs.acs.org/doi/abs/10.1021/ja800513m
Abstract:
A series of heteroleptic ruthenium(II) polypyridyl complexes containing phenanthroline ligands have been designed, synthesized, and characterized. The spectroscopic and electrochemical properties of the complexes have been studied in solution and adsorbed onto semiconductor nanocrystalline metal oxide particles. The results show that for two of the ruthenium complexes, bearing electron-donating (−NH2) or electron-withdrawing (−NO2) groups, the presence of the redox-active I−/I3− electrolyte produces important changes in the interfacial charge transfer processes that limit the device performance. For example, those dyes enhanced the electron recombination reaction between the photoinjected electrons at TiO2 and the oxidized redox electrolyte. In an effort to understand the details of such striking observations, we have monitored the charge transfer reactions taking place at the different interfaces of the devices using time-resolved single photon counting, laser transient spectroscopy, and light-induced photovoltage measurements.
Type:
Article
Language:
en
ISSN:
0002-7863; 1520-5126
Rights:
Author can archive post-print (ie final draft post-refereeing) after 12 month embargo from publication

Full metadata record

DC FieldValue Language
dc.contributor.authorReynal, A. (Anna)en
dc.contributor.authorForneli, A. (Amparo)en
dc.contributor.authorMartinez-Ferrero, E. (Eugenia)en
dc.contributor.authorSánchez-Díaz, A. (Antonio)en
dc.contributor.authorVidal-Ferran, A. (Antón)en
dc.contributor.authorO’Regan, B. C. (Brian)en
dc.contributor.authorPalomares, E. (Emilio)en
dc.date.accessioned2016-02-19T16:05:05Zen
dc.date.available2016-02-19T16:05:05Zen
dc.date.issued2008-10-15en
dc.identifier.citationJournal of the American Chemical Society; 130 (41): 13558en
dc.identifier.issn0002-7863en
dc.identifier.issn1520-5126en
dc.identifier.doi10.1021/ja800513men
dc.identifier.urihttp://hdl.handle.net/10149/596724en
dc.description.abstractA series of heteroleptic ruthenium(II) polypyridyl complexes containing phenanthroline ligands have been designed, synthesized, and characterized. The spectroscopic and electrochemical properties of the complexes have been studied in solution and adsorbed onto semiconductor nanocrystalline metal oxide particles. The results show that for two of the ruthenium complexes, bearing electron-donating (−NH2) or electron-withdrawing (−NO2) groups, the presence of the redox-active I−/I3− electrolyte produces important changes in the interfacial charge transfer processes that limit the device performance. For example, those dyes enhanced the electron recombination reaction between the photoinjected electrons at TiO2 and the oxidized redox electrolyte. In an effort to understand the details of such striking observations, we have monitored the charge transfer reactions taking place at the different interfaces of the devices using time-resolved single photon counting, laser transient spectroscopy, and light-induced photovoltage measurements.en
dc.language.isoenen
dc.publisherAmerican Chemical Societyen
dc.relation.urlhttp://pubs.acs.org/doi/abs/10.1021/ja800513men
dc.rightsAuthor can archive post-print (ie final draft post-refereeing) after 12 month embargo from publicationen
dc.titleInterfacial charge recombination between e−− TiO2 and the I−/I3− electrolyte in ruthenium heteroleptic complexes: dye molecular structure−open circuit voltage relationshipen
dc.typeArticleen
dc.contributor.departmentTeesside University, School of Science & Engineering.en
dc.identifier.journalJournal of the American Chemical Societyen
or.citation.harvardReynal, A.; Forneli, A.; Martinez-Ferrero, E.; Sanchez-Diaz, A.; Vidal-Ferran, A.; O'Regan, B. C.; Palomares, E. (2008) 'Interfacial charge recombination between e−− TiO2 and the I−/I3− electrolyte in ruthenium heteroleptic complexes: dye molecular structure−open circuit voltage relationship' Journal of the American Chemical Society; 130 (41): 13558en
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