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dc.creatorMerino, Rosa I.es
dc.creatorOliete, Patricia B.es
dc.creatorMoshtaghion, Bibi Malmales
dc.creatorSola, Danieles
dc.creatorPeña, José I.es
dc.date.accessioned2023-05-19T17:25:19Z
dc.date.available2023-05-19T17:25:19Z
dc.date.issued2022
dc.identifier.citationMerino, R.I., Oliete, P.B., Moshtaghion, B.M., Sola, D. y Peña, J.I. (2022). Directionally Solidified Cobalt-Doped MgO-MgAl2O4 Eutectic Composites for Selective Emitters. Applied Sciences, 12 (20). https://doi.org/10.3390/app122010254.
dc.identifier.issn2076-3417es
dc.identifier.urihttps://hdl.handle.net/11441/146469
dc.description.abstractCobalt-doped MgO-MgAl2O4 eutectic composites were explored for their use as selective emitters for thermophotovoltaic devices. Eutectic ceramic rods with different cobalt content were directionally solidified by using the laser floating zone technique at two processing rates to obtain microstructures with different domain sizes. Thermal emission between 1000 ◦C and 1500 ◦C and optical properties (reflectance and transmittance) at room temperature were measured in the Co-doped composites and the effect on microstructure and cobalt content was investigated. Thermal emission consisted of an intense broad band at about 1.67 µm matching with the bandgap of the InGaAs cell. The emission was ascribed to the de-excitation from the 4T1 (F) multiplet to the 4A2 (F) ground state of the thermally excited Co ions located in the tetrahedral sites of the MgAl2O4 phase. The selectivity of the thermal emission showed a decrease with the cobalt content due to the enhancement of other electronic transitions, which leads to keeping the cobalt content in these composites at low levels (<0.15% at Co) for their use as selective emitters.es
dc.description.sponsorshipMinisterio de Economía y Competitividad MAT2013-41045-R-EMITEME, MAT-2016-77769R-FLASCERAMATes
dc.formatapplication/pdfes
dc.format.extent17 p.es
dc.language.isoenges
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)es
dc.relation.ispartofApplied Sciences, 12 (20).
dc.rightsAtribución 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectCobalt-doped selective emitterses
dc.subjectDirectionally solidified ceramic eutecticses
dc.subjectMgO/MgAl2O4es
dc.subjectThermophotovoltaices
dc.titleDirectionally Solidified Cobalt-Doped MgO-MgAl2O4 Eutectic Composites for Selective Emitterses
dc.typeinfo:eu-repo/semantics/articlees
dcterms.identifierhttps://ror.org/03yxnpp24
dc.type.versioninfo:eu-repo/semantics/publishedVersiones
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.contributor.affiliationUniversidad de Sevilla. Departamento de Física de la Materia Condensadaes
dc.relation.projectIDMAT2013-41045-R-EMITEMEes
dc.relation.projectIDMAT-2016-77769R-FLASCERAMATes
dc.relation.publisherversionhttps://doi.org/10.3390/app122010254es
dc.identifier.doi10.3390/app122010254es
dc.journaltitleApplied Scienceses
dc.publication.volumen12es
dc.publication.issue20es
dc.contributor.funderMinisterio de Economía y Competitividad (MINECO). Españaes

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