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High quality thin films of thermoelectric misfit cobalt oxides prepared by a chemical solution method

Misfit cobaltates ([Bi/Ba/Sr/Ca/CoO](n)(RS)[CoO2](q)) constitute the most promising family of thermoelectric oxides for high temperature energy harvesting. However, their complex structure and chemical composition makes extremely challenging their deposition by high-vacuum physical techniques. There...

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Autores principales: Rivas-Murias, Beatriz, Manuel Vila-Fungueiriño, José, Rivadulla, Francisco
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4495387/
https://www.ncbi.nlm.nih.gov/pubmed/26153533
http://dx.doi.org/10.1038/srep11889
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author Rivas-Murias, Beatriz
Manuel Vila-Fungueiriño, José
Rivadulla, Francisco
author_facet Rivas-Murias, Beatriz
Manuel Vila-Fungueiriño, José
Rivadulla, Francisco
author_sort Rivas-Murias, Beatriz
collection PubMed
description Misfit cobaltates ([Bi/Ba/Sr/Ca/CoO](n)(RS)[CoO2](q)) constitute the most promising family of thermoelectric oxides for high temperature energy harvesting. However, their complex structure and chemical composition makes extremely challenging their deposition by high-vacuum physical techniques. Therefore, many of them have not been prepared as thin films until now. Here we report the synthesis of high-quality epitaxial thin films of the most representative members of this family of compounds by a water-based chemical solution deposition method. The films show an exceptional crystalline quality, with an electrical conductivity and thermopower comparable to single crystals. These properties are linked to the epitaxial matching of the rock-salt layers of the structure to the substrate, producing clean interfaces free of amorphous phases. This is an important step forward for the integration of these materials with complementary n-type thermoelectric oxides in multilayer nanostructures.
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spelling pubmed-44953872015-07-13 High quality thin films of thermoelectric misfit cobalt oxides prepared by a chemical solution method Rivas-Murias, Beatriz Manuel Vila-Fungueiriño, José Rivadulla, Francisco Sci Rep Article Misfit cobaltates ([Bi/Ba/Sr/Ca/CoO](n)(RS)[CoO2](q)) constitute the most promising family of thermoelectric oxides for high temperature energy harvesting. However, their complex structure and chemical composition makes extremely challenging their deposition by high-vacuum physical techniques. Therefore, many of them have not been prepared as thin films until now. Here we report the synthesis of high-quality epitaxial thin films of the most representative members of this family of compounds by a water-based chemical solution deposition method. The films show an exceptional crystalline quality, with an electrical conductivity and thermopower comparable to single crystals. These properties are linked to the epitaxial matching of the rock-salt layers of the structure to the substrate, producing clean interfaces free of amorphous phases. This is an important step forward for the integration of these materials with complementary n-type thermoelectric oxides in multilayer nanostructures. Nature Publishing Group 2015-07-08 /pmc/articles/PMC4495387/ /pubmed/26153533 http://dx.doi.org/10.1038/srep11889 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Rivas-Murias, Beatriz
Manuel Vila-Fungueiriño, José
Rivadulla, Francisco
High quality thin films of thermoelectric misfit cobalt oxides prepared by a chemical solution method
title High quality thin films of thermoelectric misfit cobalt oxides prepared by a chemical solution method
title_full High quality thin films of thermoelectric misfit cobalt oxides prepared by a chemical solution method
title_fullStr High quality thin films of thermoelectric misfit cobalt oxides prepared by a chemical solution method
title_full_unstemmed High quality thin films of thermoelectric misfit cobalt oxides prepared by a chemical solution method
title_short High quality thin films of thermoelectric misfit cobalt oxides prepared by a chemical solution method
title_sort high quality thin films of thermoelectric misfit cobalt oxides prepared by a chemical solution method
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4495387/
https://www.ncbi.nlm.nih.gov/pubmed/26153533
http://dx.doi.org/10.1038/srep11889
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