Self-template construction of honeycomb-like mesoporous YPO4:Ln3+ (Ln = Eu, Tb) phosphors with tuneable luminescent properties

Xiong, Hailong; Zhang, Ye; Liu, Yali; Gao, Tu‐Nan; Zhang, Liangliang; Qiao, Zhen‐An; Zhang, Ling; Gan, Shucai; Huo, Qisheng

doi:10.1016/j.jallcom.2018.12.107

Cited by 17 publications

(3 citation statements)

References 49 publications

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“…QY values increase with the increasing Tb 3+ doping concentration. Compared with the other luminescent hosts, phosphate [ 34 ], fluoroborates [ 35 ], and silicate [ 36 ], concentration quenching does not occur in the KGC host with a high Tb 3+ doping concentration. The unique structure of [REO 8 ] polyhedral enables the sufficient distance between adjacent Tb 3+ to avoid energy loss [ 21 , 23 ].…”

Section: Resultsmentioning

confidence: 99%

Quantum Cutting in KGd(CO3)2:Tb3+ Green Phosphor

Qian²,

Huang³

et al. 2023

Nanomaterials

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Phosphors with a longer excitation wavelength exhibit higher energy conversion efficiency. Herein, quantum cutting KGd(CO3)2:Tb3+ phosphors excited by middle-wave ultraviolet were synthesized via a hydrothermal method. All the KGd(CO3)2:xTb3+ phosphors remain in monoclinic structures in a large Tb3+ doping range. In the KGd(CO3)2 host, 6D3/2 and 6I17/2 of Gd3+ were employed for quantum cutting in sensitizing levels. The excited state electrons could easily transfer from Gd3+ to Tb3+ with high efficiency. There are three efficient excited bands for quantum cutting. The excited wavelengths of 244, 273, and 283 nm correspond to the transition processes of 8S7/2→6D3/2 (Gd3+), 8S7/2→6I17/2 (Gd3+), and 7F6→5F4 (Tb3+), and the maximum quantum yields of KGd(CO3)2:Tb3+ can reach 163.5, 119, and 143%, respectively. The continuous and efficient excitation band of 273–283 nm can well match the commercial 275 nm LED chip to expand the usage of solid-state light sources. Meanwhile, the phosphor also shows good excitation efficiency at 365 nm in a high Tb3+ doping concentration. Therefore, KGd(CO3)2:Tb3+ is an efficient green-emitting phosphor for ultraviolet-excited solid-state light sources.

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Section: Resultsmentioning

confidence: 99%

Quantum Cutting in KGd(CO3)2:Tb3+ Green Phosphor

Qian²,

Huang³

et al. 2023

Nanomaterials

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“…In summary, the synthesis of mixed yttrium vanadate-phosphate phosphors provides an increase in PL brightness compared with both individual components due to their interphase interactions yielding new surface compounds. This approach is promising for the further optimization of the compositions of the phosphors to improve their performance [20][21][22].…”

Section: Excitation and Luminescencementioning

confidence: 99%

High Efficient YVPO4 Luminescent Materials Activated by Europium

et al. 2019

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YPO4:Eu, YVO4:Eu, and YVPO4:Eu based phosphors with various Eu(III) activator contents and phosphate-vanadate ratios were synthesized by the self-propagating high-temperature synthesis method. The samples were characterized by scanning electron microscopy, nitrogen sorption, acid-base indicators and photoluminescence. The particle surface features with a finely dispersed structure comprising all the involved elements. The pore structure and the specific surface areas of the samples were different depending on the compositions of the samples. The most finely dispersed sample was YVO4:Eu samples. The specific surface areas of the YPO4:Eu samples were 10 to 15 times greater than those of vanadate samples. The phosphors samples had a slightly basic (YVO4:Eu, YVPO4:Eu) or slightly acidic (YPO4:Eu) properties of the surface with different contents of Lewis and Brönsted sites. The differences in the compositions and acid-base state resulted in the difference in the intensity and brightness of the photoluminescence (PL) of the samples. The yttrium-phosphate-vanadate phosphors of the mixed YVxP1−xO4-Eu had higher brightness and PL intensity than those samples with similar phosphate as well as vanadate phosphors.

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“…Characteristics of RE 3+ cations are their emission of narrow and well-defined transitions which extend from the visible-infrared range (f → f type transitions), and enable an expressive number of luminescent properties. In particular, the presence of RE 3+ cations provide superior performance for high-tech applications in optical and communications devices [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Integrated experimental and theoretical study on the phase transition and photoluminescent properties of ZrO2:xTb3+ (x=1, 2, 4 and 8 mol %)

Lovisa

Gomes

Gracia

et al. 2022

Materials Research Bulletin

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Self-template construction of honeycomb-like mesoporous YPO4:Ln3+ (Ln = Eu, Tb) phosphors with tuneable luminescent properties

Cited by 17 publications

References 49 publications

Quantum Cutting in KGd(CO3)2:Tb3+ Green Phosphor

Quantum Cutting in KGd(CO3)2:Tb3+ Green Phosphor

High Efficient YVPO4 Luminescent Materials Activated by Europium

Integrated experimental and theoretical study on the phase transition and photoluminescent properties of ZrO2:xTb3+ (x=1, 2, 4 and 8 mol %)

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Self-template construction of honeycomb-like mesoporous YPO4:Ln3+ (Ln = Eu, Tb) phosphors with tuneable luminescent properties

Cited by 17 publications

References 49 publications

Quantum Cutting in KGd(CO3)2:Tb3+ Green Phosphor

Quantum Cutting in KGd(CO3)2:Tb3+ Green Phosphor

High Efficient YVPO4 Luminescent Materials Activated by Europium

Integrated experimental and theoretical study on the phase transition and photoluminescent properties of ZrO2:xTb3+ (x=1, 2, 4 and 8 mol %)

Contact Info

Product

Resources

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Self-template construction of honeycomb-like mesoporous YPO4:Ln3+ (Ln = Eu, Tb) phosphors with tuneable luminescent properties