dc.creator | Merino, Rosa I. | es |
dc.creator | Oliete, Patricia B. | es |
dc.creator | Moshtaghion, Bibi Malmal | es |
dc.creator | Sola, Daniel | es |
dc.creator | Peña, José I. | es |
dc.date.accessioned | 2023-05-19T17:25:19Z | |
dc.date.available | 2023-05-19T17:25:19Z | |
dc.date.issued | 2022 | |
dc.identifier.citation | Merino, 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.issn | 2076-3417 | es |
dc.identifier.uri | https://hdl.handle.net/11441/146469 | |
dc.description.abstract | Cobalt-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.sponsorship | Ministerio de Economía y Competitividad MAT2013-41045-R-EMITEME, MAT-2016-77769R-FLASCERAMAT | es |
dc.format | application/pdf | es |
dc.format.extent | 17 p. | es |
dc.language.iso | eng | es |
dc.publisher | Multidisciplinary Digital Publishing Institute (MDPI) | es |
dc.relation.ispartof | Applied Sciences, 12 (20). | |
dc.rights | Atribución 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | * |
dc.subject | Cobalt-doped selective emitters | es |
dc.subject | Directionally solidified ceramic eutectics | es |
dc.subject | MgO/MgAl2O4 | es |
dc.subject | Thermophotovoltaic | es |
dc.title | Directionally Solidified Cobalt-Doped MgO-MgAl2O4 Eutectic Composites for Selective Emitters | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Física de la Materia Condensada | es |
dc.relation.projectID | MAT2013-41045-R-EMITEME | es |
dc.relation.projectID | MAT-2016-77769R-FLASCERAMAT | es |
dc.relation.publisherversion | https://doi.org/10.3390/app122010254 | es |
dc.identifier.doi | 10.3390/app122010254 | es |
dc.journaltitle | Applied Sciences | es |
dc.publication.volumen | 12 | es |
dc.publication.issue | 20 | es |
dc.contributor.funder | Ministerio de Economía y Competitividad (MINECO). España | es |