The riddle of orange-red luminescence in Bismuth-doped silica glasses

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dc.contributor.authorLaguta, Oleksiics
dc.contributor.authorRazdobreev, Igor M.cs
dc.coverage.issue1cs
dc.coverage.volume11cs
dc.date.accessioned2021-12-14T15:55:54Z
dc.date.available2021-12-14T15:55:54Z
dc.date.issued2021-04-08cs
dc.description.abstractFor over the past two decades it has been believed that the intense orange-red photoluminescence in Bismuth-doped materials originates from Bi2+ ions. Based on the results from magnetic circular polarization experiments, we demonstrate that this hypothesis fails for Bismuth-doped silica glasses. Our findings contradict the generally accepted statement that the orange-red luminescence arises from P-2(3/2)(1)-> P-2(1/2) transition in a divalent Bismuth ion. The degree of magnetic circular polarization of this luminescence exhibits non-monotonic temperature and field dependencies, as well as sign reversal. This complex behaviour cannot be explained under the assumption of a single Bi2+ ion. The detailed analysis enables us to construct a consistent diagram of energy levels involved in the magneto-optical experiments and propose a new interpretation of the nature of orange-red luminescence in Bismuth-doped silica glass. A centre responsible for this notorious photoluminescence must be an even-electron system with an integer total spin, presumably a dimer of Bismuth ions or a complex consisting of Bi2+ and an oxygen vacancy.en
dc.formattextcs
dc.format.extent1-10cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationScientific Reports. 2021, vol. 11, issue 1, p. 1-10.en
dc.identifier.doi10.1038/s41598-021-87290-zcs
dc.identifier.issn2045-2322cs
dc.identifier.other172492cs
dc.identifier.urihttp://hdl.handle.net/11012/203219
dc.language.isoencs
dc.publisherNature Portfoliocs
dc.relation.ispartofScientific Reportscs
dc.relation.urihttps://www.nature.com/articles/s41598-021-87290-zcs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2045-2322/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectFiber materials; Laser materials; Spectroscopyen
dc.subjectfluorescence and luminescence.en
dc.titleThe riddle of orange-red luminescence in Bismuth-doped silica glassesen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-172492en
sync.item.dbtypeVAVen
sync.item.insts2021.12.14 16:55:54en
sync.item.modts2021.12.14 16:15:22en
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Magneto-Optická a THz Spektroskopiecs
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