Charge-transfer dynamics of fluorescent dye-sensitized electrodes under applied biases

Autores
Godin, Robert; Sherman, Benjamin D.; Bergkamp, Jesse J.; Chesta, Carlos Alberto; Moore, Ana L.; Moore, Thomas A.; Palacios, Rodrigo Emiliano; Cosa, Gonzalo
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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.
Fil: Godin, Robert. McGill University; Canadá
Fil: Sherman, Benjamin D.. Arizona State University; Estados Unidos
Fil: Bergkamp, Jesse J.. Arizona State University; Estados Unidos
Fil: Chesta, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto; Argentina
Fil: Moore, Ana L.. Arizona State University; Estados Unidos
Fil: Moore, Thomas A.. Arizona State University; Estados Unidos
Fil: Palacios, Rodrigo Emiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto; Argentina
Fil: Cosa, Gonzalo. McGill University; Canadá
Materia
DYE-SENSITIZED SOLAR CELLS
INTERDACIAL CHARGE-TRANSFER DYNAMICS
PERYLENE
SQUARAINE
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/69393
Acceder
id CONICETDig_bdc394a6a076ae67ca189f2ab56ce1a7
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Charge-transfer dynamics of fluorescent dye-sensitized electrodes under applied biasesGodin, RobertSherman, Benjamin D.Bergkamp, Jesse J.Chesta, Carlos AlbertoMoore, Ana L.Moore, Thomas A.Palacios, Rodrigo EmilianoCosa, GonzaloDYE-SENSITIZED SOLAR CELLSINTERDACIAL CHARGE-TRANSFER DYNAMICSPERYLENESQUARAINEhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The 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.Fil: Godin, Robert. McGill University; CanadáFil: Sherman, Benjamin D.. Arizona State University; Estados UnidosFil: Bergkamp, Jesse J.. Arizona State University; Estados UnidosFil: Chesta, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto; ArgentinaFil: Moore, Ana L.. Arizona State University; Estados UnidosFil: Moore, Thomas A.. Arizona State University; Estados UnidosFil: Palacios, Rodrigo Emiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto; ArgentinaFil: Cosa, Gonzalo. McGill University; CanadáAmerican Chemical Society2015-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/69393Godin, 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; 2688-26931948-7185CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1021/acs.jpclett.5b01061info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/acs.jpclett.5b01061info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:43:19Zoai:ri.conicet.gov.ar:11336/69393instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:43:19.365CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Charge-transfer dynamics of fluorescent dye-sensitized electrodes under applied biases
title Charge-transfer dynamics of fluorescent dye-sensitized electrodes under applied biases
spellingShingle Charge-transfer dynamics of fluorescent dye-sensitized electrodes under applied biases
Godin, Robert
DYE-SENSITIZED SOLAR CELLS
INTERDACIAL CHARGE-TRANSFER DYNAMICS
PERYLENE
SQUARAINE
title_short Charge-transfer dynamics of fluorescent dye-sensitized electrodes under applied biases
title_full Charge-transfer dynamics of fluorescent dye-sensitized electrodes under applied biases
title_fullStr Charge-transfer dynamics of fluorescent dye-sensitized electrodes under applied biases
title_full_unstemmed Charge-transfer dynamics of fluorescent dye-sensitized electrodes under applied biases
title_sort Charge-transfer dynamics of fluorescent dye-sensitized electrodes under applied biases
dc.creator.none.fl_str_mv Godin, Robert
Sherman, Benjamin D.
Bergkamp, Jesse J.
Chesta, Carlos Alberto
Moore, Ana L.
Moore, Thomas A.
Palacios, Rodrigo Emiliano
Cosa, Gonzalo
author Godin, Robert
author_facet Godin, Robert
Sherman, Benjamin D.
Bergkamp, Jesse J.
Chesta, Carlos Alberto
Moore, Ana L.
Moore, Thomas A.
Palacios, Rodrigo Emiliano
Cosa, Gonzalo
author_role author
author2 Sherman, Benjamin D.
Bergkamp, Jesse J.
Chesta, Carlos Alberto
Moore, Ana L.
Moore, Thomas A.
Palacios, Rodrigo Emiliano
Cosa, Gonzalo
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv DYE-SENSITIZED SOLAR CELLS
INTERDACIAL CHARGE-TRANSFER DYNAMICS
PERYLENE
SQUARAINE
topic DYE-SENSITIZED SOLAR CELLS
INTERDACIAL CHARGE-TRANSFER DYNAMICS
PERYLENE
SQUARAINE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv 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.
Fil: Godin, Robert. McGill University; Canadá
Fil: Sherman, Benjamin D.. Arizona State University; Estados Unidos
Fil: Bergkamp, Jesse J.. Arizona State University; Estados Unidos
Fil: Chesta, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto; Argentina
Fil: Moore, Ana L.. Arizona State University; Estados Unidos
Fil: Moore, Thomas A.. Arizona State University; Estados Unidos
Fil: Palacios, Rodrigo Emiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto; Argentina
Fil: Cosa, Gonzalo. McGill University; Canadá
description 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.
publishDate 2015
dc.date.none.fl_str_mv 2015-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/69393
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
1948-7185
CONICET Digital
CONICET
url http://hdl.handle.net/11336/69393
identifier_str_mv 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
1948-7185
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.jpclett.5b01061
info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/acs.jpclett.5b01061
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842268593594564608
score 13.13397

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