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Effect of tetragonal to cubic phase transition on the upconversion luminescence properties of A/B site erbium-doped perovskite BaTiO(3)

With the increasing number of applications for upconversion materials, a more detailed understanding of the intrinsic mechanisms of their optical processes is required. Thus far, various lanthanide-doped host materials or nanoparticle systems have been investigated as representative upconversion sys...

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Autores principales: Bae, Hyeongyu, Lee, Kang Taek
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9059889/
https://www.ncbi.nlm.nih.gov/pubmed/35520515
http://dx.doi.org/10.1039/c8ra09783f
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author Bae, Hyeongyu
Lee, Kang Taek
author_facet Bae, Hyeongyu
Lee, Kang Taek
author_sort Bae, Hyeongyu
collection PubMed
description With the increasing number of applications for upconversion materials, a more detailed understanding of the intrinsic mechanisms of their optical processes is required. Thus far, various lanthanide-doped host materials or nanoparticle systems have been investigated as representative upconversion systems owing to their major advantage as optical probes. As for the energetics of upconversion and the associated upconversion pathways, the role of the host material is very important because it provides a unique microscopic environment; for example, a unique local lattice structure in the case of crystalline samples. In general, the upconversion luminescence intensity decreases as a function of temperature owing to thermally accelerated multiphonon relaxation. Here, we report that the temperature dependence of the upconversion luminescence efficiency is affected differently in an Er(3+)-doped perovskite material, barium titanate (BaTiO(3), BT), than in a general system. We show that Er(3+) doped at the A (Ba(2+)) and B (Ti(4+)) sites of tetragonal phase BT, referred to as A-BT and B-BT, respectively, show different upconversion behaviors. The slope of the plot of the upconversion emission intensity as a function of temperature changed significantly in case of B-BT, but not for A-BT. This anomalous behavior of Er(3+)-doped BT is attributed to the phase transition (at ∼120 °C) of BT from tetragonal to cubic phase. Essentially, the temperature-dependent upconversion luminescence trend depends on the doping sites of Er(3+), i.e., at A or B sites in BT, which is explained by the difference in the symmetry of the crystalline structure with different crystal phase surrounding the Er(3+) ions.
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spelling pubmed-90598892022-05-04 Effect of tetragonal to cubic phase transition on the upconversion luminescence properties of A/B site erbium-doped perovskite BaTiO(3) Bae, Hyeongyu Lee, Kang Taek RSC Adv Chemistry With the increasing number of applications for upconversion materials, a more detailed understanding of the intrinsic mechanisms of their optical processes is required. Thus far, various lanthanide-doped host materials or nanoparticle systems have been investigated as representative upconversion systems owing to their major advantage as optical probes. As for the energetics of upconversion and the associated upconversion pathways, the role of the host material is very important because it provides a unique microscopic environment; for example, a unique local lattice structure in the case of crystalline samples. In general, the upconversion luminescence intensity decreases as a function of temperature owing to thermally accelerated multiphonon relaxation. Here, we report that the temperature dependence of the upconversion luminescence efficiency is affected differently in an Er(3+)-doped perovskite material, barium titanate (BaTiO(3), BT), than in a general system. We show that Er(3+) doped at the A (Ba(2+)) and B (Ti(4+)) sites of tetragonal phase BT, referred to as A-BT and B-BT, respectively, show different upconversion behaviors. The slope of the plot of the upconversion emission intensity as a function of temperature changed significantly in case of B-BT, but not for A-BT. This anomalous behavior of Er(3+)-doped BT is attributed to the phase transition (at ∼120 °C) of BT from tetragonal to cubic phase. Essentially, the temperature-dependent upconversion luminescence trend depends on the doping sites of Er(3+), i.e., at A or B sites in BT, which is explained by the difference in the symmetry of the crystalline structure with different crystal phase surrounding the Er(3+) ions. The Royal Society of Chemistry 2019-01-18 /pmc/articles/PMC9059889/ /pubmed/35520515 http://dx.doi.org/10.1039/c8ra09783f Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Bae, Hyeongyu
Lee, Kang Taek
Effect of tetragonal to cubic phase transition on the upconversion luminescence properties of A/B site erbium-doped perovskite BaTiO(3)
title Effect of tetragonal to cubic phase transition on the upconversion luminescence properties of A/B site erbium-doped perovskite BaTiO(3)
title_full Effect of tetragonal to cubic phase transition on the upconversion luminescence properties of A/B site erbium-doped perovskite BaTiO(3)
title_fullStr Effect of tetragonal to cubic phase transition on the upconversion luminescence properties of A/B site erbium-doped perovskite BaTiO(3)
title_full_unstemmed Effect of tetragonal to cubic phase transition on the upconversion luminescence properties of A/B site erbium-doped perovskite BaTiO(3)
title_short Effect of tetragonal to cubic phase transition on the upconversion luminescence properties of A/B site erbium-doped perovskite BaTiO(3)
title_sort effect of tetragonal to cubic phase transition on the upconversion luminescence properties of a/b site erbium-doped perovskite batio(3)
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9059889/
https://www.ncbi.nlm.nih.gov/pubmed/35520515
http://dx.doi.org/10.1039/c8ra09783f
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