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dc.contributor.authorden Engelsen, D-
dc.contributor.authorFern, GR-
dc.contributor.authorIreland, TG-
dc.contributor.authorHudry, D-
dc.contributor.authorAbeykoon, M-
dc.contributor.authorNykypanchuk, D-
dc.contributor.authorDickerson, J-
dc.contributor.authorSilver, J-
dc.identifierORCID iDs: T G Ireland; J H Dickerson
dc.identifier.citationden Engelsen, D., Fern, G.R., Ireland, T.G., Hudry, D., Abeykoon, M., Nykypanchuk, D., Dickerson, J. and Silver, J. (2018) 'Ultrathin Y2O3:Eu3+nanodiscs: spectroscopic investigations and evidence for reduced concentration quenching', Nanotechnology, 29, 455703, pp. 1 - 14. doi: 10.1088/1361-6528/aadc83.en_US
dc.description.abstract© Copyright 2018 The Author(s). Here, we report the synthesis and spectral properties of ultrathin nanodiscs (NDs) of Y2O3:Eu3+. It was found that the NDs of Y2O3:Eu3+ with a thickness of about 1nm can be fabricated in a reproducible, facile and self-assembling process, which does not depend on the Eu3+ concentration. The thickness and morphology of these NDs were determined with small angle x-ray scattering and transmission electron microscopy. We found that the crystal field in these nanoparticles deviates from both the cubic and monoclinic characteristics, albeit the shape of the 5D0→7FJ (J=0, 1, 2) transitions shows some similarity with the transitions in the monoclinic material. The Raman spectra of the non-annealed NDs manifest various vibration modes of the oleic acid molecules, which are used to stabilise the NDs. The annealed NDs show two very weak Raman lines, which may be assigned to vibrational modes of Y2O3 NDs. The concentration quenching of the Eu3+ luminescence of the NDs before annealing is largely suppressed and might be explained in terms of a reduction of the phonon density of states.en_US
dc.description.sponsorshipEPSRC and Technology Strategy Board (TSB) PURPOSE (TP11/MFE/6/1/AA129F; EP-SRC TS/G000271/1) and CONVERTED (JeS no. TS/1003053/1), PRISM (EP/N508974/1) and FAB3D programs; TSB the CONVERT program.en_US
dc.format.extent1 - 14-
dc.publisherIOP Publishingen_US
dc.rights© Copyright 2018 The Author(s). Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.-
dc.subjecteuropium-doped yttrium oxideen_US
dc.subjectsmall angle x-ray scatteringen_US
dc.subjecttransmission electron microscopyen_US
dc.subjectRaman spectroscopyen_US
dc.titleUltrathin Y2O3:Eu3+nanodiscs: spectroscopic investigations and evidence for reduced concentration quenchingen_US
dc.rights.holderThe Author(s)-
Appears in Collections:Dept of Mechanical and Aerospace Engineering Research Papers

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