Hydrogen absorption absorption by metallic thin films detected by optical transmittance measurements

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dc.contributor.authorCabrera, A. L.
dc.contributor.authorAvila, J. I.
dc.contributor.authorLederman, David
dc.date.accessioned2024-01-10T13:13:33Z
dc.date.available2024-01-10T13:13:33Z
dc.date.issued2010
dc.description.abstractThe hydrogen absorption by bilayers of Pd/Nb and Pd/Ti, grown on glass substrates, was studied by measuring changes in optical transmittance and reflectance in the visible range (wavelengths between 400 nm and 1000 nm) of the films at hydrogen pressures between 3.99 x 10(2) and 4.65 x 10(4) Pa. The electrical resistance of the films was also measured during absorption to correlate with the optical data. All the films were grown by a controlled sputtering technique in high vacuum. Pd films ranging in thickness between 4 nm and 45 nm were also characterized when the films were exposed to a hydrogen pressure. The resistance and transmittance of all the Pd samples increased with the uptake of hydrogen until saturation occurred. For Pd/Ti bilayers, fast uptake of hydrogen was deduced from a transmittance increase, indicating hydrogen absorption in the Ti layer. In the case of the Pd/Nb bilayer, a decrease in transmittance was observed, indicating that hydrogen was not absorbed in the Nb layer. The transmittance decrease could be explained by a reduction of Nb native oxide by the hydrogen at the surface. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
dc.description.funderFONDECYT
dc.description.funderMECESUP, Chile
dc.description.funderUS National Science Foundation
dc.fechaingreso.objetodigital26-03-2024
dc.format.extent7 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.ijhydene.2010.07.137
dc.identifier.eissn1879-3487
dc.identifier.issn0360-3199
dc.identifier.urihttps://doi.org/10.1016/j.ijhydene.2010.07.137
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/78315
dc.identifier.wosidWOS:000283977100072
dc.information.autorucFísica; Avila JI;S/I;16359
dc.information.autorucFísica; Cabrera AL;S/I;99388
dc.issue.numero19
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final10619
dc.pagina.inicio10613
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD
dc.revistaINTERNATIONAL JOURNAL OF HYDROGEN ENERGY
dc.rightsacceso restringido
dc.subjectHydrogen
dc.subjectAbsorption
dc.subjectPalladium thin films
dc.subjectNiobium and titanium sputtered films
dc.subjectOptical transmittance
dc.subjectResistance of films
dc.subjectPALLADIUM-FILMS
dc.subjectALPHA-PHASE
dc.subjectBETA-PHASE
dc.subjectPERMEATION
dc.subjectHYDRIDE
dc.subjectSTORAGE
dc.subject.ods07 Affordable and Clean Energy
dc.subject.odspa07 Energía asequible y no contaminante
dc.titleHydrogen absorption absorption by metallic thin films detected by optical transmittance measurements
dc.typeartículo
dc.volumen35
sipa.codpersvinculados16359
sipa.codpersvinculados99388
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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