Preparation and luminescence properties of Eu2O3 doped glass-ceramics containing NaY(MoO4)2

Wang, Tong; Wang, Siying; Wei, Yuezhou; Zou, Xiangyu; Wang, Liying; Guo, Zhaohua; Lv, Huimin

doi:10.1016/j.jeurceramsoc.2019.11.034

Cited by 21 publications

(5 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Among fluorides, special attention should be paid to YF 3 and LaF 3 crystal phases characterized by wide band gap (>10 eV) and exceptionally low-phonon energies equal to~358 as well as~350 cm −1 , respectively, in which M 3+ (M = Y, La) cations from crystal lattices can be easily substituted by RE 3+ ions without any charge compensation [20][21][22][23]. Due to the above reasons, the oxyfluoride glass-ceramic materials (GCs) containing fluoride nanocrystals are considered as an interesting class of advanced optical materials, which are frequently reported in the literature [24][25][26][27][28]. Indeed, they successfully combine the advantages of the individual fluoride crystal phase with good mechanical strength and thermal durability of oxide hosts [29,30].…”

Section: Introductionmentioning

confidence: 99%

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

2020

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 99%

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

2020

View full text Add to dashboard Cite

show abstract

“…The larger the value of the ratio of Ctype/(B-type+C-type) in Eu2O3 nanoparticles, the closer the wavelength of the peak Eu 3+ emission spectrum is to 612 nm. In contrast, the wavelength of the peak Eu 3+ emission spectrum may be extended to 630 nm from 612 nm [15][16][17][18][19].…”

Section: Analysis Of Spectramentioning

confidence: 97%

“…Figure 4 exhibits the excitation and emission spectra of the Eu2O3 nanoparticles at the various calcination temperatures, and there is also a group of fluorescence intensity data of Eu2O3 phosphors prepared by the ammonia precipitation method (the calcination temperature is 500℃) as the control group to compare the intensity of luminescence. According to the literature [10][11][12][13][14][15][16][17][18][19], the excitation peak wavelength of Eu 3+ is 393 nm. Therefore, the Eu 3+ emission spectrum is excited by the wavelength of 393 nm, as shown in Figure 4a.…”

Section: Analysis Of Spectramentioning

confidence: 99%

Eu₂O₃ microsphere luminescent material based on aerosol jet printing

2023

E3S Web Conf.

View full text Add to dashboard Cite

In this paper, microsphere structural materials of europium oxide (Eu2O3) were prepared using the aerosol jet printing technique. Europium oxide powders were produced at different calcination temperatures for the comparisons of nanostructures and luminescence properties. The peak of the emission spectrum of Eu3+ is near 612 nm (red), which contributes to the three primary colors. As an important and typical rare earth oxide, Eu2O3 plays an important role in red phosphor materials and is an activator for the red phosphor. Rare earth oxides microsphere materials are widely used in modern industrial production, such as light, electricity, magnetism, mechanics, and machinery, because of their advantages of the small size effect and the surface effect. Eu2O3 microsphere nanomaterials possess the advantages of both rare earth oxides and microsphere materials, exhibiting excellent optical properties and laying a good foundation for the development of biomedical, electronic information photocatalysis and other industries. However, the existing preparation methods of Eu2O3 microsphere nanomaterials have shortcomings, including uncontrollable microparticle morphology and complicated experimental operations. The most important point is that the initial pattern of the phosphor cannot be customized, and a secondary process is needed to obtain the target pattern. This two-step process inevitably leads to the loss of material and production time. Under this background, this experiment attempts to prepare a microspherical Eu2O3 phosphor using aerosol jet printing (AJP) technology, which is an important attempt to improve the level of the luminescent performance and the customization level of the fluorescent initial pattern.

show abstract

“…Compared with other systems, 73,74 it can be seen that the crystallization activation energy of this series of glasses is low, so it is easier to obtain glassceramic by heat treatment. Based on the characteristic temperature of DSC and previous studies, [75][76][77] to improve the luminescence performance by increasing the number of precipitated grains with high crystallinity while maintaining transmittance, we chose a heat treatment with crystallization at 620, 635, 650, and 665 • C for 7 h.…”

Section: Thermodynamic Analysismentioning

confidence: 99%

Dy³⁺‐ and/or Sm³⁺‐doped glass–ceramics containing NaGd(MoO₄)₂ crystalline phase for warm white light applications

Tong,

Luo,

Liu

et al. 2024

J Am Ceram Soc.

View full text Add to dashboard Cite

The transparent glass–ceramics with Dy3+ and/or Sm3+ doping, which include the NaGd(MoO4)2 single‐crystal phase, were synthesized using the melt‐quenching method followed by heat treatment in the SiO2–B2O3–Na2O–ZnO–MoO3–Gd2O3 system. The formation and fluorescent properties of Dy3+ single‐doped precursor glasses were thoroughly examined, and the optimal doping amount of Dy2O3 was determined to be 0.3 mol% by fluorescence spectroscopy. The ideal heat treatment procedure for glass–ceramics containing Dy3+ and Sm3+ was determined to be crystallized at a temperature of 650°C for a duration of 7 h. After undergoing heat treatment, the luminescence performance of glass–ceramic is significantly boosted, exhibiting an improvement that is roughly twice as substantial when compared to the precursor glass. Extensive research has been conducted to thoroughly examine the fluorescence capabilities of glass–ceramics doped with both Dy3+ and Sm3+, and the intricate mechanism of energy transfer has been extensively explored. The transparent glass–ceramics doped with Dy3+ and Sm3+ and containing NaGd(MoO4)2 crystal phase can produce tunable luminescence from yellow to orange with a high color purity and a low correlated color temperature, which indicates that they have the potential to be applied to warm white light scenes such as household lighting under ultraviolet excitation.

show abstract

Preparation and luminescence properties of Eu2O3 doped glass-ceramics containing NaY(MoO4)2

Cited by 21 publications

References 18 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

Eu₂O₃ microsphere luminescent material based on aerosol jet printing

Dy³⁺‐ and/or Sm³⁺‐doped glass–ceramics containing NaGd(MoO₄)₂ crystalline phase for warm white light applications

Contact Info

Product

Resources

About

Preparation and luminescence properties of Eu2O3 doped glass-ceramics containing NaY(MoO4)2

Cited by 21 publications

References 18 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

Eu2O3 microsphere luminescent material based on aerosol jet printing

Dy3+‐ and/or Sm3+‐doped glass–ceramics containing NaGd(MoO4)2 crystalline phase for warm white light applications

Contact Info

Product

Resources

About

Eu₂O₃ microsphere luminescent material based on aerosol jet printing

Dy³⁺‐ and/or Sm³⁺‐doped glass–ceramics containing NaGd(MoO₄)₂ crystalline phase for warm white light applications