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dc.contributor.author
Yoon, Songhak
dc.contributor.author
Otal, Eugenio Hernan
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dc.contributor.author
Maegli, Alexandra E.
dc.contributor.author
Karvonen, Lassi
dc.contributor.author
Matam, Santhosh K.
dc.contributor.author
Ebbinghaus, Stefan G.
dc.contributor.author
Walfort, Bernhard
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Hagemann, Hans
dc.contributor.author
Pokrant, Simone
dc.contributor.author
Weidenkaff, Anke
dc.date.available
2017-12-06T16:45:57Z
dc.date.issued
2014-06
dc.identifier.citation
Yoon, Songhak; Otal, Eugenio Hernan; Maegli, Alexandra E.; Karvonen, Lassi; Matam, Santhosh K.; et al.; Improved persistent luminescence of CaTiO3:Pr by fluorine substitution and thermochemical treatment; Elsevier; Journal of Alloys and Compounds; 613; 6-2014; 338-343
dc.identifier.issn
0925-8388
dc.identifier.uri
http://hdl.handle.net/11336/29830
dc.description.abstract
Fluorine-substituted CaTiO3:Pr phosphors were prepared by a solid-state reaction. Rietveld refinements of powder X-ray diffraction patterns revealed that increasing fluorine-substitution leads to the gradual shrinkage of the unit-cell. Enhanced afterglow intensities were observed with fluorine-substitution. Furthermore, the effect of annealing atmosphere was investigated by thermochemical treatment in different atmospheres (Ar, air and NH3). UV?Vis diffuse reflectance spectra and photoluminescence excitation spectra revealed that Pr4+ in the pristine CaTi(O,F)3:Pr phosphor was partially reduced to Pr3+ under NH3 flow leading to an intensity improvement of ca. 450% compared to CaTiO3:Pr. The substantial improvement of afterglow intensity by fluorine substitution and annealing in NH3 is considered to be connected with the generation of oxygen vacancies and the partial reduction of Pr4+ to Pr3+.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Peroskitas
dc.subject
Catio3:Pr
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Fluorination
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Persistent Luminescence
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Afterglow
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X-Ray Diffraction
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Astronomía
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Improved persistent luminescence of CaTiO3:Pr by fluorine substitution and thermochemical treatment
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-12-04T19:07:36Z
dc.journal.volume
613
dc.journal.pagination
338-343
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Ámsterdam
dc.description.fil
Fil: Yoon, Songhak. Eidgenössische Materialprüfungs- und Forschungsanstalt; Suiza
dc.description.fil
Fil: Otal, Eugenio Hernan. Eidgenössische Materialprüfungs- und Forschungsanstalt; Suiza. Consejo Nacional de Investigaciones Científicas y Técnicas. Unidad de Investigación y Desarrollo Estratégico para la Defensa. Ministerio de Defensa. Unidad de Investigación y Desarrollo Estratégico para la Defensa; Argentina
dc.description.fil
Fil: Maegli, Alexandra E.. Eidgenössische Materialprüfungs- und Forschungsanstalt; Suiza
dc.description.fil
Fil: Karvonen, Lassi. Eidgenössische Materialprüfungs- und Forschungsanstalt; Suiza
dc.description.fil
Fil: Matam, Santhosh K.. Eidgenössische Materialprüfungs- und Forschungsanstalt; Suiza
dc.description.fil
Fil: Ebbinghaus, Stefan G.. Martin Luther University Halle-Wittenberg. Institute of Chemistry; Alemania
dc.description.fil
Fil: Walfort, Bernhard. LumiNova AG; Suiza
dc.description.fil
Fil: Hagemann, Hans. Universidad de Ginebra; Suiza
dc.description.fil
Fil: Pokrant, Simone. Eidgenössische Materialprüfungs- und Forschungsanstalt; Suiza
dc.description.fil
Fil: Weidenkaff, Anke. Eidgenössische Materialprüfungs- und Forschungsanstalt; Suiza. University of Stuttgart. Institute for Materials Science; Alemania
dc.journal.title
Journal of Alloys and Compounds
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0925838814013759
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jallcom.2014.06.041
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