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Studies of Sol-Gel Evolution and Distribution of Eu(3+) Ions in Glass–Ceramics Containing LaF(3) Nanocrystals Depending on Initial Sols Composition
In this work, we performed a systematic analysis of the impact of selected chemical reagents used in sol-gel synthesis (i.e., N,N-dimethylformamide) and different catalyst agents (i.e., CH(3)COOH, HNO(3)) on the formation and luminescence of Eu(3+)-doped SiO(2)–LaF(3) nano-glass–ceramics. Due to the...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7863933/ https://www.ncbi.nlm.nih.gov/pubmed/33498202 http://dx.doi.org/10.3390/ijms22030996 |
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author | Pawlik, Natalia Szpikowska-Sroka, Barbara Goryczka, Tomasz Pisarski, Wojciech A. |
author_facet | Pawlik, Natalia Szpikowska-Sroka, Barbara Goryczka, Tomasz Pisarski, Wojciech A. |
author_sort | Pawlik, Natalia |
collection | PubMed |
description | In this work, we performed a systematic analysis of the impact of selected chemical reagents used in sol-gel synthesis (i.e., N,N-dimethylformamide) and different catalyst agents (i.e., CH(3)COOH, HNO(3)) on the formation and luminescence of Eu(3+)-doped SiO(2)–LaF(3) nano-glass–ceramics. Due to the characteristic nature of intra-configurational electronic transitions of Eu(3+) ions within the 4f(6) manifold ((5)D(0) → (7)F(J), J = 0–4), they are frequently used as a spectral probe. Thus, the changes in the photoluminescence profile of Eu(3+) ions could identify the general tendency of rare earth materials to segregate inside low-phonon energy fluoride nanocrystals, which allows us to assess their application potential in optoelectronics. Fabricated sol-gel materials, from sols to gels and xerogels to nano-glass–ceramics, were examined using several experimental techniques: X-ray diffraction (XRD), transmission electron microscopy (TEM), infrared spectroscopy (IR), and luminescence measurements. It was found that the distribution of Eu(3+) ions between the amorphous silicate sol-gel host and LaF(3) nanocrystals is strictly dependent on the initial composition of the obtained sols, and the lack of N,N-dimethylformamide significantly promotes the segregation of Eu(3+) ions inside LaF(3) nanocrystals. As a result, we detected long-lived luminescence from the (5)D(0) excited state equal to 6.21 ms, which predisposes the obtained glass–ceramic material for use as an optical element in reddish-orange emitting devices. |
format | Online Article Text |
id | pubmed-7863933 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-78639332021-02-06 Studies of Sol-Gel Evolution and Distribution of Eu(3+) Ions in Glass–Ceramics Containing LaF(3) Nanocrystals Depending on Initial Sols Composition Pawlik, Natalia Szpikowska-Sroka, Barbara Goryczka, Tomasz Pisarski, Wojciech A. Int J Mol Sci Article In this work, we performed a systematic analysis of the impact of selected chemical reagents used in sol-gel synthesis (i.e., N,N-dimethylformamide) and different catalyst agents (i.e., CH(3)COOH, HNO(3)) on the formation and luminescence of Eu(3+)-doped SiO(2)–LaF(3) nano-glass–ceramics. Due to the characteristic nature of intra-configurational electronic transitions of Eu(3+) ions within the 4f(6) manifold ((5)D(0) → (7)F(J), J = 0–4), they are frequently used as a spectral probe. Thus, the changes in the photoluminescence profile of Eu(3+) ions could identify the general tendency of rare earth materials to segregate inside low-phonon energy fluoride nanocrystals, which allows us to assess their application potential in optoelectronics. Fabricated sol-gel materials, from sols to gels and xerogels to nano-glass–ceramics, were examined using several experimental techniques: X-ray diffraction (XRD), transmission electron microscopy (TEM), infrared spectroscopy (IR), and luminescence measurements. It was found that the distribution of Eu(3+) ions between the amorphous silicate sol-gel host and LaF(3) nanocrystals is strictly dependent on the initial composition of the obtained sols, and the lack of N,N-dimethylformamide significantly promotes the segregation of Eu(3+) ions inside LaF(3) nanocrystals. As a result, we detected long-lived luminescence from the (5)D(0) excited state equal to 6.21 ms, which predisposes the obtained glass–ceramic material for use as an optical element in reddish-orange emitting devices. MDPI 2021-01-20 /pmc/articles/PMC7863933/ /pubmed/33498202 http://dx.doi.org/10.3390/ijms22030996 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Pawlik, Natalia Szpikowska-Sroka, Barbara Goryczka, Tomasz Pisarski, Wojciech A. Studies of Sol-Gel Evolution and Distribution of Eu(3+) Ions in Glass–Ceramics Containing LaF(3) Nanocrystals Depending on Initial Sols Composition |
title | Studies of Sol-Gel Evolution and Distribution of Eu(3+) Ions in Glass–Ceramics Containing LaF(3) Nanocrystals Depending on Initial Sols Composition |
title_full | Studies of Sol-Gel Evolution and Distribution of Eu(3+) Ions in Glass–Ceramics Containing LaF(3) Nanocrystals Depending on Initial Sols Composition |
title_fullStr | Studies of Sol-Gel Evolution and Distribution of Eu(3+) Ions in Glass–Ceramics Containing LaF(3) Nanocrystals Depending on Initial Sols Composition |
title_full_unstemmed | Studies of Sol-Gel Evolution and Distribution of Eu(3+) Ions in Glass–Ceramics Containing LaF(3) Nanocrystals Depending on Initial Sols Composition |
title_short | Studies of Sol-Gel Evolution and Distribution of Eu(3+) Ions in Glass–Ceramics Containing LaF(3) Nanocrystals Depending on Initial Sols Composition |
title_sort | studies of sol-gel evolution and distribution of eu(3+) ions in glass–ceramics containing laf(3) nanocrystals depending on initial sols composition |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7863933/ https://www.ncbi.nlm.nih.gov/pubmed/33498202 http://dx.doi.org/10.3390/ijms22030996 |
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