DC pole | Wartość | Język |
dc.contributor.author | Pawlik, Natalia | - |
dc.contributor.author | Szpikowska-Sroka, Barbara | - |
dc.contributor.author | Goryczka, Tomasz | - |
dc.contributor.author | Pietrasik, Ewa | - |
dc.contributor.author | Pisarski, Wojciech A. | - |
dc.date.accessioned | 2022-01-26T08:38:18Z | - |
dc.date.available | 2022-01-26T08:38:18Z | - |
dc.date.issued | 2022 | - |
dc.identifier.citation | "Nanomaterials" (2022), iss. 2, art. no. 259, s. 1-16 | pl_PL |
dc.identifier.issn | 2079-4991 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12128/22386 | - |
dc.description.abstract | The synthesis and characterization of multicolor light-emitting nanomaterials based on rare
earths (RE3+) are of great importance due to their possible use in optoelectronic devices, such as LEDs
or displays. In the present work, oxyfluoride glass-ceramics containing BaF2 nanocrystals co-doped
with Tb3+, Eu3+ ions were fabricated from amorphous xerogels at 350 C. The analysis of the thermal
behavior of fabricated xerogels was performed using TG/DSC measurements (thermogravimetry
(TG), differential scanning calorimetry (DSC)). The crystallization of BaF2 phase at the nanoscale was
confirmed by X-ray diffraction (XRD) measurements and transmission electron microscopy (TEM),
and the changes in silicate sol–gel host were determined by attenuated total reflectance infrared
(ATR-IR) spectroscopy. The luminescent characterization of prepared sol–gel materials was carried
out by excitation and emission spectra along with decay analysis from the 5D4 level of Tb3+. As
a result, the visible light according to the electronic transitions of Tb3+ (5D4 ! 7FJ (J = 6–3)) and
Eu3+ (5D0 ! 7FJ (J = 0–4)) was recorded. It was also observed that co-doping with Eu3+ caused the
shortening in decay times of the 5D4 state from 1.11 ms to 0.88 ms (for xerogels) and from 6.56 ms
to 4.06 ms (for glass-ceramics). Thus, based on lifetime values, the Tb3+/Eu3+ energy transfer (ET)
efficiencies were estimated to be almost 21% for xerogels and 38% for nano-glass-ceramics. Therefore,
such materials could be successfully predisposed for laser technologies, spectral converters, and
three-dimensional displays. | pl_PL |
dc.language.iso | en | pl_PL |
dc.rights | Uznanie autorstwa 3.0 Polska | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/pl/ | * |
dc.subject | BaF2 nanophase | pl_PL |
dc.subject | oxyfluoride nano-glass-ceramics | pl_PL |
dc.subject | Tb3+/Eu3+ energy transfer | pl_PL |
dc.subject | sol–gel chemistry | pl_PL |
dc.title | Luminescence of SiO2-BaF2:Tb3+, Eu3+ nano-glass-ceramics made from sol-gel method at low temperature | pl_PL |
dc.type | info:eu-repo/semantics/article | pl_PL |
dc.identifier.doi | 10.3390/nano12020259 | - |
Pojawia się w kolekcji: | Artykuły (WNŚiT)
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