Energy transfer and tunable luminescence properties in Y3Al2Ga3O12: Tb3+, Eu3+ phosphors

Li, Zhenzhang; Bi-liang, Zhong; Cao, Yujun; Zhang, Shaoan; Lv, Yang; Mu, Zhongfei; Hu, Zhengfa; Hu, Yihua

doi:10.1016/j.jallcom.2019.02.154

Cited by 57 publications

(15 citation statements)

References 51 publications

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“…where x is the activator concentration, I/x is the emission intensity per activator concentration, k and b are constants for a given host in the same excitation condition, q ¼ 6, 8 and 10 represent the dipole-dipole(D-D), dipole-quadrupole (D-Q), and quadrupole-quadrupole (Q-Q) interactions, respectively. Assuming that b(x) q/3 [ 1, the above eqn (2) can be written as: 33,34 Log(I/x) ¼ K 0 À (q/3)Log(x) and…”

Section: Ftir Analysismentioning

confidence: 99%

Crystal structure, optical spectroscopy and energy transfer properties in NaZnPO₄:Ce³⁺, Tb³⁺ phosphors for UV-based LEDs

Saidi

Dammak

2020

RSC Adv.

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Section: Ftir Analysismentioning

confidence: 99%

Crystal structure, optical spectroscopy and energy transfer properties in NaZnPO₄:Ce³⁺, Tb³⁺ phosphors for UV-based LEDs

Saidi

Dammak

2020

RSC Adv.

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“…In this case, the willingly studied pathway for generation a white light is related to the mixing of three primary colors-red, green and blue (RGB)-in optical materials. Such red-green-blue multicolor visible light can be achieved via up-conversion of near-infrared radiation (NIR) [3][4][5][6][7] or via the conversion of near-ultraviolet (NUV) photons [8][9][10]. Since rare-earth ions (RE 3+ ) exhibit a broad range of emission in the visible (VIS) spectral scope via interactions with NIR and NUV irradiation, they are considered as essential parts in the development of white-light-emitting RGB materials [11,12].…”

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

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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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“…The doping concentration of Tb 3+ for phosphor Na 3 La 1– x (VO 4 ) 2 : x Tb 3+ was optimized to be x = 0.08 (Figure a–c). Moreover, the luminescent lifetime of Na 3 La 0.92 (VO 4 ) 2 :0.08Tb 3+ was measured, as shown in Figure , and eq can be used to fit the value , …”

Section: Results and Discussionmentioning

confidence: 99%

(3+1)-Dimensional Modulated Structure and Tb³⁺-Doped Luminescence for Vanadate Na₃La(VO₄)₂

Zhao

et al. 2022

Inorg. Chem.

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A modulated structure with symmetrical characteristic higher than three-dimensional is a fascinating crystallographic type, and it is randomly encountered by researchers. Herein, we prepared 0.1 mm level single crystals of Na 3 La(VO 4 ) 2 and determined its structure to be a (3 + 1)-dimensional modulated structure using the X-ray diffraction analysis method for single crystals. Its super space group was determined to be Pca2 1 (0β0)-000. On the other hand, we introduced Tb 3+ into the Na 3 La(VO 4 ) 2 host lattice to fabricate phosphors Na 3 La 1-x (VO 4 ) 2 :xTb 3+ and studied their photoluminescence properties. Interestingly, for the strong absorption of the Na 3 La(VO 4 ) 2 host lattice in the range of 200−400 nm, the traditional 330−385 nm light is unable to efficiently excite Tb 3+ ions in the Na 3 La(VO 4 ) 2 host to generate luminescence of Tb 3+ . Instead, Na 3 La 1−x (VO 4 ) 2 :xTb 3+ is suitable to be excited by 487 nm to generate emitting light at 543, 584, and 622 nm, due to Tb 3+ characteristic 4f → 4f transitions of 5 D 4 → 7 F J (J = 5, 4, 3). Hence, the Tb 3+ -doped Na 3 La(VO 4 ) 2 phosphors have potential applications for white-light-emitting diodes.

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Energy transfer and tunable luminescence properties in Y3Al2Ga3O12: Tb3+, Eu3+ phosphors

Cited by 57 publications

References 51 publications

Crystal structure, optical spectroscopy and energy transfer properties in NaZnPO₄:Ce³⁺, Tb³⁺ phosphors for UV-based LEDs

Crystal structure, optical spectroscopy and energy transfer properties in NaZnPO₄:Ce³⁺, Tb³⁺ phosphors for UV-based LEDs

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

(3+1)-Dimensional Modulated Structure and Tb³⁺-Doped Luminescence for Vanadate Na₃La(VO₄)₂

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Energy transfer and tunable luminescence properties in Y3Al2Ga3O12: Tb3+, Eu3+ phosphors

Cited by 57 publications

References 51 publications

Crystal structure, optical spectroscopy and energy transfer properties in NaZnPO4:Ce3+, Tb3+ phosphors for UV-based LEDs

Crystal structure, optical spectroscopy and energy transfer properties in NaZnPO4:Ce3+, Tb3+ phosphors for UV-based LEDs

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

(3+1)-Dimensional Modulated Structure and Tb3+-Doped Luminescence for Vanadate Na3La(VO4)2

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Crystal structure, optical spectroscopy and energy transfer properties in NaZnPO₄:Ce³⁺, Tb³⁺ phosphors for UV-based LEDs

Crystal structure, optical spectroscopy and energy transfer properties in NaZnPO₄:Ce³⁺, Tb³⁺ phosphors for UV-based LEDs

(3+1)-Dimensional Modulated Structure and Tb³⁺-Doped Luminescence for Vanadate Na₃La(VO₄)₂