Defect chemistry and vacancy concentration of luminescent europium doped ceria nanoparticles by solvothermal method

Show simple item record Thorat, Atul V. Ghoshal, Tandra Carolan, Patrick B. Holmes, Justin D. Morris, Michael A. 2018-09-14T11:46:17Z 2018-09-14T11:46:17Z 2014-04-28
dc.identifier.citation Thorat, A. V., Ghoshal, T., Carolan, P., Holmes, J. D. and Morris, M. A. (2014) 'Defect Chemistry and Vacancy Concentration of Luminescent Europium Doped Ceria Nanoparticles by the Solvothermal Method', The Journal of Physical Chemistry C, 118(20), pp. 10700-10710. doi: 10.1021/jp410213n en
dc.identifier.volume 118 en
dc.identifier.issued 20 en
dc.identifier.startpage 10700 en
dc.identifier.endpage 10710 en
dc.identifier.doi 10.1021/jp410213n
dc.description.abstract Pure phase and europium-doped ceria nanocrystals have been synthesized by a single step simple solvothermal process. Different spectroscopic, diffractive, and microscopic techniques were used to determine the morphology, size, crystal structure, and phase of all the samples. Electron energy loss spectroscopy (EELS) for elemental mapping confirmed that good solid solutions were formed and that the particles had a homogeneous distribution of europium. The defect chemistry was more complex than might be expected with the incorporation of each Eu3+ ion resulting in the production of an anion vacancy since the doping results in charge compensating (i.e., for Eu3+) anion vacancies as well as vacancies due to oxygen removal from the crystallite surface. Variations in nanoparticles dimension and lattice parameters were measured as a function of dopant concentrations and their variations explained. The band gap of the samples could be tailored by the doping. The doped samples were found to be luminescent due to the substitution of Ce4+ ions in the cubic symmetric lattice by the dopant ions. The thermal stability of the fluorescence properties was also investigated. en
dc.description.sponsorship Science Foundation Ireland (Strategic Research Cluster FORME grant and a CSET CRANN grant) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher American Chemical Society (ACS) en
dc.rights © 2014 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of Physical Chemistry C , copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see en
dc.subject Ceria en
dc.subject Europium en
dc.subject Defects en
dc.subject Doping en
dc.subject EELS en
dc.subject Luminescence en
dc.subject Nanoparticles en
dc.subject Surface defects en
dc.subject Ions en
dc.subject Electron energy loss spectroscopy en
dc.subject Doping (additives) en
dc.title Defect chemistry and vacancy concentration of luminescent europium doped ceria nanoparticles by solvothermal method en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Justin D. Holmes, Chemistry, University College Cork, Cork, Ireland. +353-21-490-3000 Email: en
dc.internal.availability Full text available en 2018-08-07T14:40:21Z
dc.description.version Accepted Version en
dc.internal.rssid 256972811
dc.contributor.funder Science Foundation Ireland en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Journal of Physical Chemistry C en
dc.internal.copyrightchecked No !!CORA!! en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress en
dc.relation.project info:eu-repo/grantAgreement/SFI/SFI Starting Investigator Research Grant (SIRG)/09/SIRG/I1621/IE/Tuning surface and dopant properties of silicon and germanium nanowires for high performance nanowire-based field-effect transistors/ en

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