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dc.contributor.author
Torresan, Maria Fernanda
dc.contributor.author
Baruzzi, Ana Maria
dc.contributor.author
Iglesias, Rodrigo Alejandro
dc.date.available
2018-10-09T16:33:54Z
dc.date.issued
2016-10
dc.identifier.citation
Torresan, Maria Fernanda; Baruzzi, Ana Maria; Iglesias, Rodrigo Alejandro; Thermal annealing of photoanodes based on CdSe Qdots sensitized TiO2; Elsevier Science; Solar Energy Materials And Solar Cells; 155; 10-2016; 202-208
dc.identifier.issn
0927-0248
dc.identifier.uri
http://hdl.handle.net/11336/61956
dc.description.abstract
Thermal annealing of photoanodes made of TiO2 nanotubes sensitized with CdSe quantum dots is studied. Heat treatment of these photoanodes in air can cause either an improvement or a serious drop in the photocurrent generation. Ligands or capping agents stabilize Qdots removing highly reactive dangling bonds on its surface but also they can act as a passivating layer that increases charge transfer resistance between Qdots and TiO2 nanotubes; therefore optimal conditions of thermal annealing are needed to improve efficiency of the interfacial charge transfer avoiding as far as possible the decomposition of the sensitizers. As a corollary of this study, a 2.5-fold increase in photocurrent value was reached after thermal annealing at 200 °C during at least two hours; while thermal treatments at temperature values higher than 250 °C can produce a deleterious effect on the conversion efficiency if the annealing time extends over a long period of time. Photoelectrochemistry, thermogravimetry and SEM microscopy were used as tools to propose a mechanism able to explain the observed behaviour.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Nanotubes
dc.subject
Photoanode
dc.subject
Quantum Dots
dc.subject
Thermal Annealing
dc.subject.classification
Otras Ciencias Químicas
dc.subject.classification
Ciencias Químicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Thermal annealing of photoanodes based on CdSe Qdots sensitized TiO2
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-09-10T15:48:24Z
dc.journal.volume
155
dc.journal.pagination
202-208
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Torresan, Maria Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
dc.description.fil
Fil: Baruzzi, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
dc.description.fil
Fil: Iglesias, Rodrigo Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
dc.journal.title
Solar Energy Materials And Solar Cells
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/httsp://dx.doi.org/10.1016/j.solmat.2016.06.015
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0927024816301891
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