Structure and luminescent properties of oxyfluoride glass-ceramics with YF3:Eu3+ nanocrystals derived by sol-gel method

Pawlik, Natalia; Szpikowska‐Sroka, Barbara; Goryczka, Tomasz; Zubko, Maciej; Lelątko, J.; Pisarski, Wojciech A.

doi:10.1016/j.jeurceramsoc.2019.07.009

Cited by 18 publications

(17 citation statements)

References 55 publications

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“…This effect may suggest more efficient segregation of dopant ions in LaF3 than YF3 nanocrystals. Analogous results were reported earlier by us for singly doped SiO2-YF3:Eu 3+ [46] and SiO2-LaF3:Eu 3+ [47] GC sol-gel systems.…”

Section: Excitation Spectra Of Fabricated Tb 3+ Eu 3+ Co-doped Sol-gsupporting

confidence: 91%

“…The in-situ formation of LaF 3 and YF 3 nanocrystals during the thermal decomposition of La(CF 3 COO) 3 as well as Y(CF 3 COO) 3 in applied heat-treatment conditions (350 • C, 10 h) was confirmed and reported in details in our previous works [46,47]. [46,47]. The excitation and emission spectra as well as decay curves were recorded on Horiba Jobin Yvon FluoroMax-4 spectrofluorimeter (Horiba Jobin Yvon, Longjumeau, France) supplied with 150 W Xe lamp.…”

Section: Methodssupporting

confidence: 83%

“…The average diameters of fabricated nanocrystals were estimated to 8.1 nm for LaF 3 and 15.4 nm for YF 3 . The in-situ formation of LaF 3 and YF 3 nanocrystals during the thermal decomposition of La(CF 3 COO) 3 as well as Y(CF 3 COO) 3 in applied heat-treatment conditions (350 • C, 10 h) was confirmed and reported in details in our previous works [46,47]. [46,47].…”

Section: Methodssupporting

confidence: 82%

“…Indeed, the non-radiative relaxation between subsequent J states might occur due to the interaction of electronic levels of RE 3+ ions with suitable vibrational modes in their nearest surrounding. As was proven earlier by infrared measurements, some liquids (residual solvents used during sol-gel process and products of homo-and heterocondensation reactions) are retained in xerogel pores [46]. In this way, Tb 3+ and Eu 3+ ions are coordinated by CF 3 COO − anions (C=O groups:~1650 cm −1 , C-F bond:~1200 cm −1 ) and OH groups (>3000 cm −1 ).…”

Section: Luminescence Decay Analysis Of the 5 D 4 (Tb 3+ ) And The 5 mentioning

confidence: 63%

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Energy Transfer Study on Tb3+/Eu3+ Co-Activated Sol-Gel Glass-Ceramic Materials Containing MF3 (M = Y, La) Nanocrystals for NUV Optoelectronic Devices

2020

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In the present work, the Tb3+/Eu3+ co-activated sol-gel glass-ceramic materials (GCs) containing MF3 (M = Y, La) nanocrystals were fabricated during controlled heat-treatment of silicate xerogels at 350 °C. The studies of Tb3+ → Eu3+ energy transfer process (ET) were performed by excitation and emission spectra along with luminescence decay analysis. The co-activated xerogels and GCs exhibit multicolor emission originated from 4fn–4fn optical transitions of Tb3+ (5D4 → 7FJ, J = 6–3) as well as Eu3+ ions (5D0 → 7FJ, J = 0–4). Based on recorded decay curves, it was found that there is a significant prolongation in luminescence lifetimes of the 5D4 (Tb3+) and the 5D0 (Eu3+) levels after the controlled heat-treatment of xerogels. Moreover, for both types of prepared GCs, an increase in ET efficiency was also observed (from ηET ≈ 16% for xerogels up to ηET = 37.3% for SiO2-YF3 GCs and ηET = 60.8% for SiO2-LaF3 GCs). The changes in photoluminescence behavior of rare-earth (RE3+) dopants clearly evidenced their partial segregation inside low-phonon energy fluoride environment. The obtained results suggest that prepared SiO2-MF3:Tb3+, Eu3+ GC materials could be considered for use as optical elements in RGB-lighting optoelectronic devices operating under near-ultraviolet (NUV) excitation.

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Section: Excitation Spectra Of Fabricated Tb 3+ Eu 3+ Co-doped Sol-gsupporting

confidence: 91%

Section: Methodssupporting

confidence: 83%

Section: Methodssupporting

confidence: 82%

Section: Luminescence Decay Analysis Of the 5 D 4 (Tb 3+ ) And The 5 mentioning

confidence: 63%

See 2 more Smart Citations

Energy Transfer Study on Tb3+/Eu3+ Co-Activated Sol-Gel Glass-Ceramic Materials Containing MF3 (M = Y, La) Nanocrystals for NUV Optoelectronic Devices

2020

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“…Since Wang reported for the first time in the literature the method of obtaining transparent oxyfluoride glass-ceramic doped with Er 3+ and Yb 3+ ions [1], the dynamic development of research on transparent rare-earth-doped (RED) oxyfluoride glass-ceramics (GC) with fluoride nanocrystals has been noted [2,3,4,5]. As a result of controlled heat treatment of the precursor glass in the SiO 2 -Al 2 O 3 -PbF 2 -CdF 2 -YbF 3 -ErF 3 system, Wang and Ohwaki obtained Pb x Cd 1-x F 2 nanocrystals.…”

Section: Introductionmentioning

confidence: 99%

Spectroscopic Properties of Erbium-Doped Oxyfluoride Phospho-Tellurite Glass and Transparent Glass-Ceramic Containing BaF2 Nanocrystals

et al. 2019

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The ErF3-doped oxyfluoride phospho-tellurite glasses in the (40-x) TeO2-10P2O5-45 (BaF2-ZnF2) -5Na2O-xErF3 system (where x = 0.25, 0.50, 0.75, 1.00, and 1.25 mol%) have been prepared by the conventional melt-quenching method. The effect of erbium trifluoride addition on thermal, structure, and spectroscopic properties of oxyfluoride phospho-tellurite precursor glass was studied by differential scanning calorimetry (DSC), Fourier-transform infrared (FTIR), and Raman spectroscopy as well as emission measurements, respectively. The DSC curves were used to investigate characteristic temperatures and thermal stability of the precursor glass doped with varying content of ErF3. FTIR and Raman spectra were introduced to characterize the evolution of structure and phonon energy of the glasses. It was found that the addition of ErF3 up to 1.25 mol% into the chemical composition of phospho-tellurite precursor glass enhanced 2.7 µm emission and upconversion. By controlled heat-treatment process of the host glass doped with the highest content of erbium trifluoride (1.25 mol%), transparent erbium-doped phospho-tellurite glass-ceramic (GC) was obtained. X-ray diffraction analysis confirmed the presence of BaF2 nanocrystals with the average 16 nm diameter in a glass matrix. Moreover, MIR, NIR, and UC emissions of the glass-ceramic were discussed in detail and compared to the spectroscopic properties of the glass doped with 1.25 mol% of ErF3 (the base glass).

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Density of fluoride glasses through artificial intelligence techniques

Ahmmad

Jabeen

Ahmed

et al. 2021

Ceramics International

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Structure and luminescent properties of oxyfluoride glass-ceramics with YF3:Eu3+ nanocrystals derived by sol-gel method

Cited by 18 publications

References 55 publications

Energy Transfer Study on Tb3+/Eu3+ Co-Activated Sol-Gel Glass-Ceramic Materials Containing MF3 (M = Y, La) Nanocrystals for NUV Optoelectronic Devices

Energy Transfer Study on Tb3+/Eu3+ Co-Activated Sol-Gel Glass-Ceramic Materials Containing MF3 (M = Y, La) Nanocrystals for NUV Optoelectronic Devices

Spectroscopic Properties of Erbium-Doped Oxyfluoride Phospho-Tellurite Glass and Transparent Glass-Ceramic Containing BaF2 Nanocrystals

Density of fluoride glasses through artificial intelligence techniques

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