Influence of rare earth substitution on structure, photoluminescence emission properties and Judd-Ofelt analysis of ZnS:Eu3+ red phosphors

Archana, L.S.; Rajendran, Deepthi N.; Cyriac, Jincemon

doi:10.1016/j.jlumin.2021.118679

Cited by 6 publications

(3 citation statements)

References 56 publications

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“…The spectra exhibited broad peaks at

\sim

409, 956, 1090, 1246, 1396, 1500, 1561, 1589, and 1630 nm that were ascribed to the transitions 6 H 5/2 → 4 L 13/2 , 6 H 5/2 → 6 F 11/2 , 6 H 5/2 → 6 F 9/2 , 6 H 5/2 → 6 F 7/2 , 6 H 5/2 → 6 F 5/2 , 6 H 5/2 → 6 F 3/2 , 6 H 5/2 → 6 H 15/2 , 6 H 5/2 → 6 F 1/2 and 6 H 5/2 → 6 H 13/2 , respectively. All these peaks were due to f–f transitions, and they were consistent with earlier reports [39–41].…”

Section: Resultssupporting

confidence: 92%

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Demystification of luminescence properties and the near imperceptible thermal quenching of Sm³⁺‐doped tungstate phosphors

R.,

A.,

Kennedy

et al. 2024

Luminescence

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Ultra‐high thermally stable Ca2MgWO6:xSm3+ (x = 0.5, 0.75, 1, 1.25, and 1.5 mol%) double perovskite phosphors were synthesized through solid‐state reaction method. Product formation was confirmed by comparing the X‐ray diffraction (XRD) patterns of the phosphors with the standard reference file. The structural, morphological, thermal, and optical properties of the prepared phosphor were examined in detail using XRD, Fourier transform infrared spectra, scanning electron microscopy, diffused reflectance spectra, thermogravimetric analysis (TGA), photoluminescence emission, and temperature‐dependent PLE (TDPL). It was seen that the phosphor exhibited emission in the reddish region for the near‐ultraviolet excitation with moderate Colour Rendering Index values and high colour purity. The optimized phosphor (x = 1.25 mol%) was found to possess a direct optical band gap of 3.31 eV. TGA studies showed the astonishing thermal stability of the optimized phosphor. Additionally, near‐zero thermal quenching was seen in TDPL due to elevated phonon‐assisted radiative transition. Furthermore, the anti‐Stokes and Stokes emission peaks were found to be sensitive toward the temperature change and followed a Boltzmann‐type distribution. All these marked properties will make the prepared phosphors a suitable candidate for multifield applications and a fascinating material for further development.

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“…The spectra exhibited broad peaks at

\sim

Section: Resultssupporting

confidence: 92%

“…The , respectively. All these peaks were due to f-f transitions, and they were consistent with earlier reports [39][40][41].…”

Section: Uv-vis-nir Spectra Analysissupporting

confidence: 92%

Demystification of luminescence properties and the near imperceptible thermal quenching of Sm³⁺‐doped tungstate phosphors

R.,

A.,

Kennedy

et al. 2024

Luminescence

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show abstract

“…One of the essential considerations for RE-based phosphors is the host lattice. Different host lattices such as vanadates [19], sulfides [20], phosphates [21], silicates [22], garnets [23], aluminates [24], molybdates [25,26], tungstates [27], nitrides [28], or oxynitrides [29] has been explored as a host lattice for RE ions for specific applications. Among all these, REdoped molybdate compounds have near-ultraviolet (UV) excitation, blue-green broadband emission, and good chemical and thermal stability, drawing attention to serving as excellent luminescent host phosphor [30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Emission color tuning and dual-mode luminescence thermometry design in Dy³⁺/Eu³⁺ co-doped SrMoO₄ phosphors

Chauhan,

Dixit,

Pandey

et al. 2023

Methods Appl. Fluoresc.

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The challenge of building a highly reliable contactless temperature probe with high sensitivity, good temperature-induced color discriminability, and economical synthesis has prompted the research community to work in the field of rare-earth-based luminescence thermometry. Moreover, the fast-growing market for optoelectronic devices has increased the demand for tunable color-emitting phosphors. In this study, Dy3+/Eu3+ co-doped SrMoO4 phosphors were developed as tunable color-emitting source and dual-mode luminescence thermometer. A facile and cost-effective auto-combustion method was used to synthesize the phosphors. Our work demonstrates a viable scheme for tailoring the emission of single-phase phosphors by precisely controlling the dopant concentrations and by modulating excitation wavelength. The overall emission is tuned from greenish-yellow to white and greenish-yellow to reddish-orange. A detailed energy transfer process from the host to the Ln3+ ions and between the Ln3+ ions is discussed. Further, anti-thermal quenching in the emission of Dy3+ ion is observed when excited with 297 nm. The dual-mode luminescence thermometry has been studied by analyzing the fluorescence intensity ratio of Dy3+ and Eu3+ ions upon excitation at 297 nm. The maximum relative sensitivity value for 4% Eu3+ co-doped SrMoO4:4%Dy3+ phosphor is 1.46% K−1 at 300 K. Furthermore, the configurational coordinate diagram is presented to elucidate the nature of temperature-dependent emission. Therefore, our research opens up new avenues for the development of color-tunable luminescent materials for various optoelectronic and temperature-sensing applications.

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Multicolor emission tuning of ZnS@SiO2-Eu3+ composite as potential application in light-emitting devices

Córdova-Rubio,

Zazueta-Raynaud,

Lopez-Delgado

et al. 2023

Appl. Phys. A

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Influence of rare earth substitution on structure, photoluminescence emission properties and Judd-Ofelt analysis of ZnS:Eu3+ red phosphors

Cited by 6 publications

References 56 publications

Demystification of luminescence properties and the near imperceptible thermal quenching of Sm³⁺‐doped tungstate phosphors

Demystification of luminescence properties and the near imperceptible thermal quenching of Sm³⁺‐doped tungstate phosphors

Emission color tuning and dual-mode luminescence thermometry design in Dy³⁺/Eu³⁺ co-doped SrMoO₄ phosphors

Multicolor emission tuning of ZnS@SiO2-Eu3+ composite as potential application in light-emitting devices

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Influence of rare earth substitution on structure, photoluminescence emission properties and Judd-Ofelt analysis of ZnS:Eu3+ red phosphors

Cited by 6 publications

References 56 publications

Demystification of luminescence properties and the near imperceptible thermal quenching of Sm3+‐doped tungstate phosphors

Demystification of luminescence properties and the near imperceptible thermal quenching of Sm3+‐doped tungstate phosphors

Emission color tuning and dual-mode luminescence thermometry design in Dy3+/Eu3+ co-doped SrMoO4 phosphors

Multicolor emission tuning of ZnS@SiO2-Eu3+ composite as potential application in light-emitting devices

Contact Info

Product

Resources

About

Demystification of luminescence properties and the near imperceptible thermal quenching of Sm³⁺‐doped tungstate phosphors

Demystification of luminescence properties and the near imperceptible thermal quenching of Sm³⁺‐doped tungstate phosphors

Emission color tuning and dual-mode luminescence thermometry design in Dy³⁺/Eu³⁺ co-doped SrMoO₄ phosphors