Energy Transfer via Exciton Transport in Quantum Dot Based Self-Assembled Fractal Structures

Autores
Bernardo, César; Moura, I.; Núñez Fernández, Yuriel; Nuñes Pereira, Eduerdo J.; Coutinho, Paulo J. G.; Fontes Garcia, Arlindo M.; Schellenberg, Peter; Belsley, Michael; Costa, Manuel F.; Stauber, Tobias; Vasilevskiy, Mikhail I.
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Semiconductor quantum dot (QD) assemblies are promising systems for light harvesting and energy conversion and transfer, as they have a superior photostability compared to classical dyes and their absorption and emission properties can be tuned during synthesis. Here, we investigate excitonic energy transfer in self-assembled dentrite-type fractal structures consisting of QDs by microscopically mapping their fluorescence spectra and lifetimes. The behaviors of CdSe/ZnS and CdTe QD assemblies are compared; in particular, the energy transfer probability is found to be stronger in CdTe-based structures, scaling with their radiation quantum yield. Our results indicate Förster-type energy transfer in both systems, although with a higher efficiency in CdTe. The energy transfer is caused by near-field (nonradiative) dipole–dipole coupling between the individual QDs within a dendrite, with the excitation migrating from the edges to the center of the structure. The experimental findings are supported by theoretical modeling results obtained by using master equations for exciton migration/decay kinetics in diffusion-limited fractal aggregates composed of identical particles.
Fil: Bernardo, César. Universidade Do Minho; Portugal
Fil: Moura, I.. Universidade Do Minho; Portugal
Fil: Núñez Fernández, Yuriel. Comision Nacional de Energia Atomica. Gerencia D/area Invest y Aplicaciones No Nucleares. Gerencia de Física (cab). Grupo de Teoria de Solidos; Argentina
Fil: Nuñes Pereira, Eduerdo J.. Universidade Do Minho; Portugal
Fil: Coutinho, Paulo J. G.. Universidade Do Minho; Portugal
Fil: Fontes Garcia, Arlindo M.. Universidade Do Minho; Portugal
Fil: Schellenberg, Peter. Universidade Do Minho; Portugal
Fil: Belsley, Michael. Universidade Do Minho; Portugal
Fil: Costa, Manuel F.. Universidade Do Minho; Portugal
Fil: Stauber, Tobias. Universidad Autónoma de Madrid; España
Fil: Vasilevskiy, Mikhail I.. Universidade Do Minho; Portugal
Materia
Quantum Dot Assemblies
Förster-Type Energy Transfer
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:11336/27652
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/27652
network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Energy Transfer via Exciton Transport in Quantum Dot Based Self-Assembled Fractal StructuresBernardo, CésarMoura, I.Núñez Fernández, YurielNuñes Pereira, Eduerdo J.Coutinho, Paulo J. G.Fontes Garcia, Arlindo M.Schellenberg, PeterBelsley, MichaelCosta, Manuel F.Stauber, TobiasVasilevskiy, Mikhail I.Quantum Dot AssembliesFörster-Type Energy Transferhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Semiconductor quantum dot (QD) assemblies are promising systems for light harvesting and energy conversion and transfer, as they have a superior photostability compared to classical dyes and their absorption and emission properties can be tuned during synthesis. Here, we investigate excitonic energy transfer in self-assembled dentrite-type fractal structures consisting of QDs by microscopically mapping their fluorescence spectra and lifetimes. The behaviors of CdSe/ZnS and CdTe QD assemblies are compared; in particular, the energy transfer probability is found to be stronger in CdTe-based structures, scaling with their radiation quantum yield. Our results indicate Förster-type energy transfer in both systems, although with a higher efficiency in CdTe. The energy transfer is caused by near-field (nonradiative) dipole–dipole coupling between the individual QDs within a dendrite, with the excitation migrating from the edges to the center of the structure. The experimental findings are supported by theoretical modeling results obtained by using master equations for exciton migration/decay kinetics in diffusion-limited fractal aggregates composed of identical particles.Fil: Bernardo, César. Universidade Do Minho; PortugalFil: Moura, I.. Universidade Do Minho; PortugalFil: Núñez Fernández, Yuriel. Comision Nacional de Energia Atomica. Gerencia D/area Invest y Aplicaciones No Nucleares. Gerencia de Física (cab). Grupo de Teoria de Solidos; ArgentinaFil: Nuñes Pereira, Eduerdo J.. Universidade Do Minho; PortugalFil: Coutinho, Paulo J. G.. Universidade Do Minho; PortugalFil: Fontes Garcia, Arlindo M.. Universidade Do Minho; PortugalFil: Schellenberg, Peter. Universidade Do Minho; PortugalFil: Belsley, Michael. Universidade Do Minho; PortugalFil: Costa, Manuel F.. Universidade Do Minho; PortugalFil: Stauber, Tobias. Universidad Autónoma de Madrid; EspañaFil: Vasilevskiy, Mikhail I.. Universidade Do Minho; PortugalAmerican Chemical Society2014-01-23info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/27652Bernardo, César; Moura, I.; Núñez Fernández, Yuriel; Nuñes Pereira, Eduerdo J.; Coutinho, Paulo J. G.; et al.; Energy Transfer via Exciton Transport in Quantum Dot Based Self-Assembled Fractal Structures; American Chemical Society; Journal of Physical Chemistry C; 118; 9; 23-1-2014; 4982-49901932-7447CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/jp411456minfo:eu-repo/semantics/altIdentifier/doi/10.1021/jp411456minfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:58:31Zoai:ri.conicet.gov.ar:11336/27652instacron: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 09:58:32.156CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Energy Transfer via Exciton Transport in Quantum Dot Based Self-Assembled Fractal Structures
title Energy Transfer via Exciton Transport in Quantum Dot Based Self-Assembled Fractal Structures
spellingShingle Energy Transfer via Exciton Transport in Quantum Dot Based Self-Assembled Fractal Structures
Bernardo, César
Quantum Dot Assemblies
Förster-Type Energy Transfer
title_short Energy Transfer via Exciton Transport in Quantum Dot Based Self-Assembled Fractal Structures
title_full Energy Transfer via Exciton Transport in Quantum Dot Based Self-Assembled Fractal Structures
title_fullStr Energy Transfer via Exciton Transport in Quantum Dot Based Self-Assembled Fractal Structures
title_full_unstemmed Energy Transfer via Exciton Transport in Quantum Dot Based Self-Assembled Fractal Structures
title_sort Energy Transfer via Exciton Transport in Quantum Dot Based Self-Assembled Fractal Structures
dc.creator.none.fl_str_mv Bernardo, César
Moura, I.
Núñez Fernández, Yuriel
Nuñes Pereira, Eduerdo J.
Coutinho, Paulo J. G.
Fontes Garcia, Arlindo M.
Schellenberg, Peter
Belsley, Michael
Costa, Manuel F.
Stauber, Tobias
Vasilevskiy, Mikhail I.
author Bernardo, César
author_facet Bernardo, César
Moura, I.
Núñez Fernández, Yuriel
Nuñes Pereira, Eduerdo J.
Coutinho, Paulo J. G.
Fontes Garcia, Arlindo M.
Schellenberg, Peter
Belsley, Michael
Costa, Manuel F.
Stauber, Tobias
Vasilevskiy, Mikhail I.
author_role author
author2 Moura, I.
Núñez Fernández, Yuriel
Nuñes Pereira, Eduerdo J.
Coutinho, Paulo J. G.
Fontes Garcia, Arlindo M.
Schellenberg, Peter
Belsley, Michael
Costa, Manuel F.
Stauber, Tobias
Vasilevskiy, Mikhail I.
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Quantum Dot Assemblies
Förster-Type Energy Transfer
topic Quantum Dot Assemblies
Förster-Type Energy Transfer
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Semiconductor quantum dot (QD) assemblies are promising systems for light harvesting and energy conversion and transfer, as they have a superior photostability compared to classical dyes and their absorption and emission properties can be tuned during synthesis. Here, we investigate excitonic energy transfer in self-assembled dentrite-type fractal structures consisting of QDs by microscopically mapping their fluorescence spectra and lifetimes. The behaviors of CdSe/ZnS and CdTe QD assemblies are compared; in particular, the energy transfer probability is found to be stronger in CdTe-based structures, scaling with their radiation quantum yield. Our results indicate Förster-type energy transfer in both systems, although with a higher efficiency in CdTe. The energy transfer is caused by near-field (nonradiative) dipole–dipole coupling between the individual QDs within a dendrite, with the excitation migrating from the edges to the center of the structure. The experimental findings are supported by theoretical modeling results obtained by using master equations for exciton migration/decay kinetics in diffusion-limited fractal aggregates composed of identical particles.
Fil: Bernardo, César. Universidade Do Minho; Portugal
Fil: Moura, I.. Universidade Do Minho; Portugal
Fil: Núñez Fernández, Yuriel. Comision Nacional de Energia Atomica. Gerencia D/area Invest y Aplicaciones No Nucleares. Gerencia de Física (cab). Grupo de Teoria de Solidos; Argentina
Fil: Nuñes Pereira, Eduerdo J.. Universidade Do Minho; Portugal
Fil: Coutinho, Paulo J. G.. Universidade Do Minho; Portugal
Fil: Fontes Garcia, Arlindo M.. Universidade Do Minho; Portugal
Fil: Schellenberg, Peter. Universidade Do Minho; Portugal
Fil: Belsley, Michael. Universidade Do Minho; Portugal
Fil: Costa, Manuel F.. Universidade Do Minho; Portugal
Fil: Stauber, Tobias. Universidad Autónoma de Madrid; España
Fil: Vasilevskiy, Mikhail I.. Universidade Do Minho; Portugal
description Semiconductor quantum dot (QD) assemblies are promising systems for light harvesting and energy conversion and transfer, as they have a superior photostability compared to classical dyes and their absorption and emission properties can be tuned during synthesis. Here, we investigate excitonic energy transfer in self-assembled dentrite-type fractal structures consisting of QDs by microscopically mapping their fluorescence spectra and lifetimes. The behaviors of CdSe/ZnS and CdTe QD assemblies are compared; in particular, the energy transfer probability is found to be stronger in CdTe-based structures, scaling with their radiation quantum yield. Our results indicate Förster-type energy transfer in both systems, although with a higher efficiency in CdTe. The energy transfer is caused by near-field (nonradiative) dipole–dipole coupling between the individual QDs within a dendrite, with the excitation migrating from the edges to the center of the structure. The experimental findings are supported by theoretical modeling results obtained by using master equations for exciton migration/decay kinetics in diffusion-limited fractal aggregates composed of identical particles.
publishDate 2014
dc.date.none.fl_str_mv 2014-01-23
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/11336/27652
Bernardo, César; Moura, I.; Núñez Fernández, Yuriel; Nuñes Pereira, Eduerdo J.; Coutinho, Paulo J. G.; et al.; Energy Transfer via Exciton Transport in Quantum Dot Based Self-Assembled Fractal Structures; American Chemical Society; Journal of Physical Chemistry C; 118; 9; 23-1-2014; 4982-4990
1932-7447
CONICET Digital
CONICET
url http://hdl.handle.net/11336/27652
identifier_str_mv Bernardo, César; Moura, I.; Núñez Fernández, Yuriel; Nuñes Pereira, Eduerdo J.; Coutinho, Paulo J. G.; et al.; Energy Transfer via Exciton Transport in Quantum Dot Based Self-Assembled Fractal Structures; American Chemical Society; Journal of Physical Chemistry C; 118; 9; 23-1-2014; 4982-4990
1932-7447
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/jp411456m
info:eu-repo/semantics/altIdentifier/doi/10.1021/jp411456m
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
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score 12.885934

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