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dc.contributor.authorBARKLIE, ROBERT CHARLES
dc.contributor.authorDONEGAN, JOHN FRANCIS
dc.date.accessioned2010-02-10T17:43:32Z
dc.date.available2010-02-10T17:43:32Z
dc.date.issued1999
dc.date.submitted1999en
dc.identifier.citationJ. D. Carey, R. C. Barklie, and J. F. Donegan , F. Priolo , G. Franzo and S. Coffa , Electron paramagnetic resonance and photoluminescence study of Er-impurity complexes in Si, Physical Review B, 59, (4), 1999, p2773 - 2782en
dc.identifier.otherY
dc.identifier.urihttp://hdl.handle.net/2262/37447
dc.descriptionPUBLISHEDen
dc.description.abstractElectron paramagnetic resonance (EPR) and photoluminescence (PL) spectroscopy have been used to examine the structure and optical properties of erbium-impurity complexes formed in float-zone Si by multiple-energy implants at 77 K of Er together with either O or F. After implantation a 2-?m-thick amorphous layer was formed containing an almost uniform concentration of Er (1019/cm3)and O (3?1019/cm3 or 1020/cm3) or F (1020/cm3). Samples were annealed in nitrogen at 450 ?C for 30 min (treatment A), treatment A+620 ?C for 3 h (treatment B), treatment B+900 ?C for 30 s (treatment C) or treatment B+900 ?C for 30 min (treatment D). Samples coimplanted to have 3?1019O/cm3 and subject to treatment C show a broad line anisotropic EPR spectrum. These samples have the most intense low-temperature PL spectrum containing several sharp peaks attributed to Er3+ in sites with predominantly cubic Td symmetry. Increasing the O concentration to 1020/cm3 produces sharp line EPR spectra the strongest of which are attributed to two Er3+ centers having monoclinic C1h and trigonal symmetry. The principal g values and tilt angle for the monoclinic centers are g1=0.80, g2=5.45, g3=12.60, ?=57.3?, g?=0.69, and g?=3.24 for the trigonal centers. The low-temperature PL spectrum from this sample showed additional sharp lines but the total intensity is reduced when compared to the sample with 3?1019O/cm3. For the sample containing 1020O/cm3 at least four distinct centers are observed by EPR after treatment B but after treatment D no EPR spectrum is observed. The PL spectra are also observed to change depending on the specific anneal treatment but even after treatment D, Er-related PL is still observed. Samples containing 1020F/cm3 and annealed with either treatment B or C produced an EPR spectrum attributed to Er3+in a site of monoclinic C1h symmetry with g1=1.36, g2=9.65, g3=7.91, and ?=79.1?.Tentative models for the structures of Er-impurity complexes are presented and the relationship between the EPR-active and PL-active centers is discussed.en
dc.format.extent2773en
dc.format.extent2782en
dc.format.extent213012 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherAmerican Physical Societyen
dc.relation.ispartofseriesPhysical Review Ben
dc.relation.ispartofseries59en
dc.relation.ispartofseries4en
dc.rightsYen
dc.subjectPhysics
dc.titleElectron paramagnetic resonance and photoluminescence study of Er-impurity complexes in Sien
dc.typeJournal Articleen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/jdonegan
dc.identifier.peoplefinderurlhttp://people.tcd.ie/rbarklie
dc.identifier.rssinternalid4872
dc.identifier.rssurihttp://dx.doi.org/10.1103/PhysRevB.59.2773


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