The synthesis and photoluminescence enhancement of sensitizer-doped Li2MgTi3O8:Mn4+ red phosphor

Weng, Chia Lien; Huang, Chieh Szu; Tsai, Meng-Hung; Huang, Cheng Liang

doi:10.1016/j.jallcom.2019.02.137

Cited by 31 publications

(3 citation statements)

References 27 publications

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“…The substitution of Fe 3+ for Mg 2+ (CN = 6) and Sn 4+ (CN = 6) was also validated by comparing the Raman spectra of the MSO without and with Fe 3+ doping (Figure S4b). The Raman mode detected at 671 cm –1 is related to the stretching vibrations of Mg/Sn–O 6 , − while the peaks in the wavenumber range of 400–550 cm –1 are attributed to the stretching vibration in Mg–O 4 . , The changes in the Raman intensity also indicate the incorporation of Fe 3+ ions into both tetrahedral and octahedral cation sites. Furthermore, FT-IR spectra of the samples were collected and presented in Figure S5.…”

Section: Resultsmentioning

confidence: 99%

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Near-Infrared Long Afterglow in Fe³⁺-Activated Mg₂SnO₄ for Self-Sustainable Night Vision

Jin

Yuan³

et al. 2023

ACS Appl. Mater. Interfaces

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The advent of near-infrared (NIR) afterglow in Cr 3+ -doped materials has stimulated considerable interest in technological applications owing to the sustainable emission of light with good penetrability. However, the development of Cr 3+ -free NIR afterglow phosphors with high efficiency, low cost, and precise spectral tunability is still an open question. Herein, we report a novel Fe 3+ -activated NIR long afterglow phosphor composed of Mg 2 SnO 4 (MSO), in which Fe 3+ ions occupy the tetrahedral [Mg−O 4 ] and octahedral [Sn/ Mg−O 6 ] sites, giving rise to a broadband NIR emission spanning 720−789 nm. On account of energy-level alignment, the electrons released from the traps show a preferential return to the excited energy level of Fe 3+ in tetrahedral sites through tunneling, leading to a single-peak NIR afterglow centered at 789 nm with a full-width at half-maximum (fwhm) of 140 nm. The highefficiency NIR afterglow, showing a record persistent time lasting over 31 h among Fe 3+ -based phosphors, is demonstrated as a self-sustainable light source for night vision applications. This work not only provides a novel Fe 3+ -doped high-efficiency NIR afterglow phosphor for technological applications but also establishes practical guidance for rational tuning of afterglow emissions.

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Section: Resultsmentioning

confidence: 99%

“…attributed to the stretching vibration in Mg−O 4 54,55. The changes in the Raman intensity also indicate the incorporation of Fe 3+ ions into both tetrahedral and octahedral cation sites.…”

mentioning

confidence: 92%

Near-Infrared Long Afterglow in Fe³⁺-Activated Mg₂SnO₄ for Self-Sustainable Night Vision

Jin

Yuan³

et al. 2023

ACS Appl. Mater. Interfaces

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“…This would limit its applications in indoor lighting and full color displays. In an attempt to improve color render properties, several materials have been put forward [6,7]. In particular, an UltraViolet LED (UV-LED) chip which has been suggested to excite the phosphor for the improvement of the CCT [8].…”

Section: Introductionmentioning

confidence: 99%

The photoluminescence of single-phase warm white-light-emitting luminescence using CaSnO₃: Ce³⁺/ Mn⁴⁺/ Dy³⁺ phosphors

Chen

Tsai

Tseng

et al. 2021

Journal of Asian Ceramic Societies

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In this study, the single-phase warm white-light phosphors were synthesized by the conventional solid-state reaction method. A phosphor composed of CaSnO 3 with the additions of Ce 3+ (0.5 wt%) and Mn 4+ (0.3 wt%) shows the optimum emission intensity at a correlated color temperature of 3758 K when excited by a 266 nm laser. The luminescence of another CaSnO 3 phosphor with the additions of Ce 3+ (0.5 wt%), Mn 4+ (0.2 wt%), and Dy 3+ (0.3 wt%) at a CCT of 3998 K is also studied by an excitation at 325 nm. In addition, the spectral overlap between the emission band of Ce 3+ and the excitation band of Mn 4+ supports the occurrence of the energy transfer from Ce 3+ to Mn 4+ . The speculated energy transfer mechanism between Ce 3+ and Mn 4+ has been studied and demonstrated to be the exchanged interactions mechanism. Moreover, the concentration quenching was also observed, and the related critical distance of energy transfer evaluated by the concentration quenching methods is about 23.426 Å.

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A new Li2Mg6TiO9-based microwave dielectric ceramic with ultrahigh quality factor

Cai,

Tao,

Zuo

2024

J Mater Sci: Mater Electron

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The synthesis and photoluminescence enhancement of sensitizer-doped Li2MgTi3O8:Mn4+ red phosphor

Cited by 31 publications

References 27 publications

Near-Infrared Long Afterglow in Fe³⁺-Activated Mg₂SnO₄ for Self-Sustainable Night Vision

Near-Infrared Long Afterglow in Fe³⁺-Activated Mg₂SnO₄ for Self-Sustainable Night Vision

The photoluminescence of single-phase warm white-light-emitting luminescence using CaSnO₃: Ce³⁺/ Mn⁴⁺/ Dy³⁺ phosphors

A new Li2Mg6TiO9-based microwave dielectric ceramic with ultrahigh quality factor

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The synthesis and photoluminescence enhancement of sensitizer-doped Li2MgTi3O8:Mn4+ red phosphor

Cited by 31 publications

References 27 publications

Near-Infrared Long Afterglow in Fe3+-Activated Mg2SnO4 for Self-Sustainable Night Vision

Near-Infrared Long Afterglow in Fe3+-Activated Mg2SnO4 for Self-Sustainable Night Vision

The photoluminescence of single-phase warm white-light-emitting luminescence using CaSnO3: Ce3+/ Mn4+/ Dy3+ phosphors

A new Li2Mg6TiO9-based microwave dielectric ceramic with ultrahigh quality factor

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Product

Resources

About

Near-Infrared Long Afterglow in Fe³⁺-Activated Mg₂SnO₄ for Self-Sustainable Night Vision

Near-Infrared Long Afterglow in Fe³⁺-Activated Mg₂SnO₄ for Self-Sustainable Night Vision

The photoluminescence of single-phase warm white-light-emitting luminescence using CaSnO₃: Ce³⁺/ Mn⁴⁺/ Dy³⁺ phosphors