Energy transfer and luminescence properties of a green-to-red color tunable phosphor Sr8MgY(PO4)7:Tb3+,Eu3+

Sun, Wenzhi; Li, Huaiyong; Li, Baohui; Du, Juan; Hao, Jigong; Hu, Chengchao; Wang, Yangbo; Yi, Xiujie; Pang, Ran; Li, Chengyu

doi:10.1007/s10854-019-01272-6

Cited by 11 publications

(2 citation statements)

References 36 publications

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“…The calculated average lifetime for the SrMn0.8Eu was 1.97 ms ( A 1 = 0.3, τ 1 = 2.35, A 2 = 0.3, τ 2 = 0.69), while for the SrMn1.0Eu, it was 1.19 ms ( A 1 = 0.11, τ 1 = 2.1, A 2 = 0.6, τ 2 = 0.59). The values were lower compared to other Eu 3+ -doped strontiowhitlockite samples [ 62 ]. The low decay time of the Eu 3+ emission may indicate charge transfer processes from the Eu 3+ levels.…”

Section: Resultsmentioning

confidence: 72%

Co-Doping Effect of Mn2+ and Eu3+ on Luminescence in Strontiowhitlockite Phosphors

Nikiforov,

Spassky,

Krutyak

et al. 2023

Molecules

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A new series of Sr-based phosphates, Sr9−xMnxEu(PO4)7, were synthesized using the high-temperature solid-state method in air. It was found that these compounds have the same structure as strontiowhitlockite, which is a β-Ca3(PO4)2 (or β-TCP) structure. The concentration of Mn2+ ions required to form a pure strontiowhitlockite phase was determined. An unusual partial reduction of Eu3+ to Eu2+ in air was observed and confirmed by photoluminescence (PL) and electron spin resonance (ESR) spectra measurements. The PL spectra recorded under 370 nm excitation showed transitions of both 4f5d–4f Eu2+ and 4f–4f Eu3+. The total integral intensity of the PL spectra, monitored at 395 nm, decreased with increasing Mn2+ concentration due to quenching effect of Eu3+ by the Mn2+ levels. The temperature dependence of Eu2+ photoluminescence in a Sr9−xMnxEu(PO4)7 host was investigated. The conditions for the reduction of Eu3+ to Eu2+ in air were discussed.

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Section: Resultsmentioning

confidence: 72%

Co-Doping Effect of Mn2+ and Eu3+ on Luminescence in Strontiowhitlockite Phosphors

Nikiforov,

Spassky,

Krutyak

et al. 2023

Molecules

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“…[17][18][19][20] Wenzhi Sun prepared a series of Sr 8 MgY(PO 4 ) 7 :Tb 3+ , Eu 3+ green to yellow to red adjustable phosphors using the hightemperature solid-phase method; these phosphors exhibited excellent thermal stability. 21) Yuling Shen reported a phosphor based on K 2 MgSiO 4 :Eu 3+ ,Tb 3+ and demonstrated the energy transfer phenomenon from Tb 3+ to Eu 3+ with the highest energy transfer efficiency of 96.3%. 22) Shubham Srivastava obtained near-white light emitting phosphors by doping Tb 3+ and Eu 3+ in a YBO 3 matrix and carefully controlled both the concentration of the activator and the excitation wavelength.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of SrSiO₃:Tb³⁺, Eu³⁺, Li⁺ red phosphors for WLED and study of their luminescence properties

Wang¹,

Jilili²,

Tuerxun³

et al. 2022

Jpn. J. Appl. Phys.

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A series of Tb3+, Eu3+, Li+ co-doped SrSiO3 phosphors were prepared by high-temperature solid-phase method. XRD results showed that Tb3+ and Eu3+ successfully entered into the SrSiO3 matrix lattice. A strong energy transfer from Tb3+ to Eu3+ exists in the sample, and the energy transfer efficiency between Tb3+ to Eu3+ is calculated to be 94.7%. The doping of the charge compensator Li+ increased the luminescence intensity of SrSiO3:6%Tb3+, 6%Eu3+, 3%Li+ phosphor at 614 nm by 4.2 times and significantly improved the color purity of this phosphor (Cp=85.9%). By the color coordinate analysis, the phosphor color coordinates are located near (0.615, 0.365), which belongs to the red region. The white LED device with a color temperature of 6479K and a color rendering index of 93.8 was obtained through the LED package test, and its luminous performance was very stable under different current drives.

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Fast synthesis and energy transfer of the tunable single-phase white-emitting phosphor Li2Gd4(WO4)7:Dy3+, Tm3+ for WLEDs

Fan

Liu

Yang

et al. 2020

Ceramics International

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Energy transfer and luminescence properties of a green-to-red color tunable phosphor Sr8MgY(PO4)7:Tb3+,Eu3+

Cited by 11 publications

References 36 publications

Co-Doping Effect of Mn2+ and Eu3+ on Luminescence in Strontiowhitlockite Phosphors

Co-Doping Effect of Mn2+ and Eu3+ on Luminescence in Strontiowhitlockite Phosphors

Synthesis of SrSiO₃:Tb³⁺, Eu³⁺, Li⁺ red phosphors for WLED and study of their luminescence properties

Fast synthesis and energy transfer of the tunable single-phase white-emitting phosphor Li2Gd4(WO4)7:Dy3+, Tm3+ for WLEDs

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Energy transfer and luminescence properties of a green-to-red color tunable phosphor Sr8MgY(PO4)7:Tb3+,Eu3+

Cited by 11 publications

References 36 publications

Co-Doping Effect of Mn2+ and Eu3+ on Luminescence in Strontiowhitlockite Phosphors

Co-Doping Effect of Mn2+ and Eu3+ on Luminescence in Strontiowhitlockite Phosphors

Synthesis of SrSiO3:Tb3+, Eu3+, Li+ red phosphors for WLED and study of their luminescence properties

Fast synthesis and energy transfer of the tunable single-phase white-emitting phosphor Li2Gd4(WO4)7:Dy3+, Tm3+ for WLEDs

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Product

Resources

About

Synthesis of SrSiO₃:Tb³⁺, Eu³⁺, Li⁺ red phosphors for WLED and study of their luminescence properties