Preparation and luminescence investigations of garnet-based Y2Ca2Ga3VO12:RE (RE = Eu3+, Sm3+, and Dy3+) phosphors

Ta, Chonge; Wen, Hongli; Mo, Zhurong; Huo, Yanping; Mu, Zhongfei; Dawi, Elmuez A.; Luo, Li; Hakeem, D.A.

doi:10.1016/j.materresbull.2023.112254

Cited by 8 publications

(1 citation statement)

References 53 publications

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“…Red-spectral area enhancement of YAG:Ce 3+ can be achieved by co-doping with red-emitting ions such as Mn 2+ , Eu 3+ , and Sm 3+ [7]. As an alternative, the use of RGB phosphors and UV or n-UV LED chips is becoming more common because of their high CRI values [8,9]. It is possible to produce white light with more uniformity and stable emission using this technology, since the output of the white LEDs produced depends on the quality of light emitted from phosphors [10].…”

Section: Introductionmentioning

confidence: 99%

Spectral studies of thermally stable Dy³⁺/Sm³⁺ co-doped Li₂Ba₅W₃O₁₅ phosphors for warm white LEDs

Anu,

Kumari,

Deopa

et al. 2024

J. Phys. D: Appl. Phys.

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In the current study, a series of Li2Ba5W3O15: RE3+ (RE=Dy, Sm) [LBW:Dy3+/Sm3+] phosphors were prepared using a high-temperature solid-state method. X-ray diffraction (XRD), Scanning electron microscopy (SEM) with Energy-dispersive X-ray analysis (EDX) scans showed that the crystal form was consistent with the standard LBW and comprised small irregularly shaped particles. Diffuse reflectance spectral (DRS) data was utilized to calculate the band gaps. Fluorescence study shows that LBW material doped with Dy3+ and Sm3+ yield distinct colors at 496 nm (blue) for Dy3+ and 582 nm (green-yellow), 612 nm (yellow), and 669 nm (red) for Sm3+ when excited by near-ultraviolet (n-UV) (336 nm) light. The observation of energy transfer (ET) between Dy3+ and Sm3+ ions play a role in modifying the luminescence of LBW:Dy3+/Sm3+ co-doped phosphors. With a constant excitation wavelength (λEx), different levels of activator doping lead to a change in the emission colors from their neutral white light to a deep orange-red region for LBW:Dy3+/Sm3+ phosphors. The decay curves demonstrate a decrease in lifetime with an increase in the concentration of activator ions (Sm3+). For D3S5 phosphor, the temperature-dependent photoluminescence (TDPL) characteristics were analysed under λEx = 336 nm excitation. The results indicate excellent luminescence thermal stability with an activation energy of 0.16 eV at λEx = 336 nm. With its low color-correlated temperature (CCT) and good thermal stability, the prepared phosphor sample shows potential as a solid-state emitting phosphor that can be used with UV chip stimulation for warm white LED applications.

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Section: Introductionmentioning

confidence: 99%

Spectral studies of thermally stable Dy³⁺/Sm³⁺ co-doped Li₂Ba₅W₃O₁₅ phosphors for warm white LEDs

Anu,

Kumari,

Deopa

et al. 2024

J. Phys. D: Appl. Phys.

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Energy transfer induced colour tunable photoluminescence performance of thermally stable Sm3+/Eu3+ co-doped Ba3MoTiO8 phosphors for white LED applications

Rohilla

Rao

2023

J Mater Sci: Mater Electron

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Novel orange-red emitting phosphor Y2MgTiO6:Sm3+ luminescence properties and optical thermometry

Long,

Yang,

et al. 2024

Ceramics International

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Preparation and luminescence investigations of garnet-based Y2Ca2Ga3VO12:RE (RE = Eu3+, Sm3+, and Dy3+) phosphors

Cited by 8 publications

References 53 publications

Spectral studies of thermally stable Dy³⁺/Sm³⁺ co-doped Li₂Ba₅W₃O₁₅ phosphors for warm white LEDs

Spectral studies of thermally stable Dy³⁺/Sm³⁺ co-doped Li₂Ba₅W₃O₁₅ phosphors for warm white LEDs

Energy transfer induced colour tunable photoluminescence performance of thermally stable Sm3+/Eu3+ co-doped Ba3MoTiO8 phosphors for white LED applications

Novel orange-red emitting phosphor Y2MgTiO6:Sm3+ luminescence properties and optical thermometry

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Preparation and luminescence investigations of garnet-based Y2Ca2Ga3VO12:RE (RE = Eu3+, Sm3+, and Dy3+) phosphors

Cited by 8 publications

References 53 publications

Spectral studies of thermally stable Dy3+/Sm3+ co-doped Li2Ba5W3O15 phosphors for warm white LEDs

Spectral studies of thermally stable Dy3+/Sm3+ co-doped Li2Ba5W3O15 phosphors for warm white LEDs

Energy transfer induced colour tunable photoluminescence performance of thermally stable Sm3+/Eu3+ co-doped Ba3MoTiO8 phosphors for white LED applications

Novel orange-red emitting phosphor Y2MgTiO6:Sm3+ luminescence properties and optical thermometry

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About

Spectral studies of thermally stable Dy³⁺/Sm³⁺ co-doped Li₂Ba₅W₃O₁₅ phosphors for warm white LEDs

Spectral studies of thermally stable Dy³⁺/Sm³⁺ co-doped Li₂Ba₅W₃O₁₅ phosphors for warm white LEDs