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Modeling and Assessment of Afterglow Decay Curves from Thermally Stimulated Luminescence of Complex Garnets

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dc.contributor Háskóli Íslands
dc.contributor University of Iceland
dc.contributor.author Khanin, Vasilii M.
dc.contributor.author Vrubel, Ivan I.
dc.contributor.author Polozkov, Roman G.
dc.contributor.author Shelykh, Ivan
dc.contributor.author Venevtsev, Ivan D.
dc.contributor.author Meijerink, Andries
dc.contributor.author Wieczorek, Herfried
dc.contributor.author Boerekamp, Jack
dc.contributor.author Spoor, Sandra
dc.contributor.author Rodnyi, Piotr A.
dc.contributor.author Ronda, Cees
dc.date.accessioned 2019-11-25T13:27:52Z
dc.date.available 2019-11-25T13:27:52Z
dc.date.issued 2019-02-18
dc.identifier.citation Khanin, V. M., Vrubel, I. I., Polozkov, R. G., Shelykh, I. A., Venevtsev, I. D., Meijerink, A., . . . Ronda, C. (2019). Modeling and Assessment of Afterglow Decay Curves from Thermally Stimulated Luminescence of Complex Garnets. The Journal of Physical Chemistry A, 123(9), 1894-1903. doi:10.1021/acs.jpca.8b11778
dc.identifier.issn 1089-5639
dc.identifier.issn 1520-5215 (eISSN)
dc.identifier.uri https://hdl.handle.net/20.500.11815/1357
dc.description Post-print (lokagerð höfundar)
dc.description.abstract Afterglow is an important phenomenon in luminescent materials and can be desired (e.g., persistent phosphors) or undesired (e.g., scintillators). Understanding and predicting afterglow is often based on analysis of thermally stimulated luminescence (TSL) glow curves, assuming the presence of one or more discrete trap states. Here we present a new approach for the description of the time-dependent afterglow from TSL glow curves using a model with a distribution of trap depths. The method is based on the deconvolution of the energy dependent density of occupied traps derived from TSL glow curves using Tikhonov regularization. To test the validity of this new approach, the procedure is applied to experimental TSL and afterglow data for Lu1Gd2Ga3Al2O12:Ce ceramics codoped with 40 ppm of Yb3+ or Eu3+ traps. The experimentally measured afterglow curves are compared with simulations based on models with and without the continuous trap depth distribution. The analysis clearly demonstrates the presence of a distribution of trap depths and shows that the new approach gives a more accurate description of the experimentally observed afterglow. The new method will be especially useful in understanding and reducing undesired afterglow in scintillators.
dc.description.sponsorship I.I.V, R.G.P and I.A.S. acknowledge support support from the Projects 14.Y26.31.0015 and 3.8884.2017/8.9 of the Ministry of Education and Science of the Russian Federation and Horizon2020 RISE project CoExAN.
dc.format.extent 1894-1903
dc.language.iso en
dc.publisher American Chemical Society (ACS)
dc.relation info:eu-repo/grantAgreement/EC/H2020/CoExAN
dc.relation.ispartofseries The Journal of Physical Chemistry A;123(9)
dc.rights info:eu-repo/semantics/openAccess
dc.subject Eðlisfræði
dc.subject Líkön
dc.title Modeling and Assessment of Afterglow Decay Curves from Thermally Stimulated Luminescence of Complex Garnets
dc.type info:eu-repo/semantics/article
dcterms.license Open Access CC BY-NC-SA 4.0 https://creativecommons.org/licenses/by-nc-sa/4.0/ as mandated by H2020 Programme (https://ec.europa.eu/research/participants/data/ref/h2020/grants_manual/amga/h2020-amga_en.pdf#page=245)
dc.description.version Peer Reviewed
dc.identifier.journal Journal of Physical Chemistry A
dc.identifier.doi 10.1021/acs.jpca.8b11778
dc.relation.url https://pubs.acs.org/doi/pdf/10.1021/acs.jpca.8b11778
dc.contributor.department Raunvísindastofnun (HÍ)
dc.contributor.department Science Institute (UI)
dc.contributor.school Verkfræði- og náttúruvísindasvið (HÍ)
dc.contributor.school School of Engineering and Natural Sciences (UI)

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