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dc.contributor.author
Godin, Robert
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Sherman, Benjamin D.
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Bergkamp, Jesse J.
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Chesta, Carlos Alberto
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Moore, Ana L.
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Moore, Thomas A.
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Palacios, Rodrigo Emiliano
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dc.contributor.author
Cosa, Gonzalo
dc.date.available
2019-02-05T14:56:21Z
dc.date.issued
2015-07
dc.identifier.citation
Godin, Robert; Sherman, Benjamin D.; Bergkamp, Jesse J.; Chesta, Carlos Alberto; Moore, Ana L.; et al.; Charge-transfer dynamics of fluorescent dye-sensitized electrodes under applied biases; American Chemical Society; Journal of Physical Chemistry Letters; 6; 14; 7-2015; 2688-2693
dc.identifier.issn
1948-7185
dc.identifier.uri
http://hdl.handle.net/11336/69393
dc.description.abstract
The development of dye-sensitized solar cells requires an in-depth understanding of the interfacial charge-transfer dynamics that take place between dye sensitizers and semiconductors. Here, we describe a prototype system to probe these dynamics by monitoring in real time the fluorescence of two organic sensitizers, a perylene and a squaraine, bound to a SnO2 semiconductor thin film as a function of potentiostatic control of the Fermi level. The two different sensitizer fluorophores characterized by vastly different redox potentials undergo similar fluorescence modulation with applied bias, an indication that the density of states of the semiconductor largely influences the charge-transfer dynamics while energetics play a minimal role. We further show that the rate of photodegradation of the perylene sensitizer with applied bias provides a suitable marker to study the rate of charge injection and charge recombination. Taken together, our results demonstrate a suitable platform to visualize and study charge-transfer dynamics on films and constitute a step toward achieving single-molecule resolution in our quest to decipher the static and dynamic heterogeneity of charge-transfer dynamics in dye-sensitized photoanodes.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Chemical Society
dc.rights
info:eu-repo/semantics/openAccess
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https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Dye-Sensitized Solar Cells
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Interdacial Charge-Transfer Dynamics
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Perylene
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Squaraine
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Otras Ciencias Químicas
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Ciencias Químicas
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CIENCIAS NATURALES Y EXACTAS
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dc.title
Charge-transfer dynamics of fluorescent dye-sensitized electrodes under applied biases
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
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info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-02-04T12:59:40Z
dc.journal.volume
6
dc.journal.number
14
dc.journal.pagination
2688-2693
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Washington
dc.description.fil
Fil: Godin, Robert. McGill University; Canadá
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Fil: Sherman, Benjamin D.. Arizona State University; Estados Unidos
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Fil: Bergkamp, Jesse J.. Arizona State University; Estados Unidos
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Fil: Chesta, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto; Argentina
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Fil: Moore, Ana L.. Arizona State University; Estados Unidos
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Fil: Moore, Thomas A.. Arizona State University; Estados Unidos
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Fil: Palacios, Rodrigo Emiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto; Argentina
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Fil: Cosa, Gonzalo. McGill University; Canadá
dc.journal.title
Journal of Physical Chemistry Letters
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1021/acs.jpclett.5b01061
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info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/acs.jpclett.5b01061
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