English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/188521
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Thermoelectric functionality of Ca3Co4O9 epitaxial thin films on yttria-stabilized zirconia crystalline substrate

AuthorsPérez-Rivero, Armando ; Cabero, M.; Varela, M.; Ramírez-Jiménez, Rafael; Mompean, F. J. ; Santamaría, J.; Martínez, J. L. ; Prieto, C.
KeywordsOxide thin films
Thermoelectric materials
Issue Date5-Jul-2017
PublisherElsevier
CitationJournal of Alloys and Compounds 710: 151-158 (2017)
AbstractLayered cobaltite CaCoO is one of the most interesting materials for energy conversion due to its excellent thermoelectric properties and stability at high temperatures. However, the best performance of this material is achieved for single crystals and epitaxial films. Within this framework, an important role is played by the substrate, which should promote epitaxial growth and that should have suitable thermal properties for its integration in devices. In this work, we report on the preparation of epitaxial thin films of CaCoO by sputtering using low cost ceramic target on cubic yttria-stabilized zirconia (YSZ(100)) that is typically the standard for low thermal conductivity material and on hexagonal sapphire (AlO(0001)). The quality of the epitaxial films and its microstructure has been studied to explain the thermoelectric properties obtained for both substrates. YSZ(100) substrate provides CaCoO films with enhanced Seebeck coefficient and AlO(0001) allows improved conductive CaCoO films that finally, at 200 °C, results in a substrate-modified Z′T figure of merit one order of magnitude higher for CaCoO on YSZ(100) than on AlO(0001) substrate.
Publisher version (URL)https://doi.org/10.1016/j.jallcom.2017.03.191
URIhttp://hdl.handle.net/10261/188521
Identifiersdoi: 10.1016/j.jallcom.2017.03.191
issn: 0925-8388
Appears in Collections:(ICMM) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.