Synthesis and luminescence enhancement of white-emitting Ca9La(VO4)7:Dy3+ phosphors through Gd3+ and Al3+ codoping for white-light-emitting diodes

Zhang, Chunlai; Yao, Chunmei

doi:10.1016/j.ceramint.2022.12.173

Cited by 11 publications

(3 citation statements)

References 59 publications

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“…The CIE chromaticity coordinates and CCT are obtained from PL results and Equation ( 7), respectively. [34] CCT…”

Section: Cie Coordinates and Correlated Color Temperaturementioning

confidence: 99%

Structural and Photoluminescence Characteristics of a Novel Single‐Phase White‐Emitting Phosphor SrBi₂Nb₂O₉:Dy³⁺

Yang,

Cui,

Zhang

et al. 2024

Physica Status Solidi (b)

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A group of white light‐emitting phosphors SrBi2Nb2O9:xDy3+ (SBN:xDy3+) are prepared by high‐temperature solid reaction. The crystal phase, morphology, and photoluminescence (PL) characteristics of the prepared SBN:xDy3+ are analyzed. The X‐ray diffraction results prove that the synthesized samples are pure phase, in which the shift of the main peak depicted that crystal interplanar distance decreases after Dy3+ replacing Bi3+. The scanning electron microscope results show that the average crystal size of the sample is ≈1–10 μm. Energy dispersive X‐ray spectroscopy shows that the ratio of element composition of the SBN:xDy3+ is similar to the theoretical calculation. The PL excitation illustrates the excitation peaks mainly exist at 389, 399, 426, and 450 nm due to the transitions of Dy3+. For PL, the emission peaks of samples with different doping concentrations are centered at 479 and 573 nm. The ratio of yellow intensity to blue intensity indicates that Dy3+ is located at a high symmetry site, which has the possibility to produce suitable white light. The Commission Internationale de l’Eclairage coordinates of the SBN:xDy3+ are located near the standard white light coordinate. All these results prove that SrBi2Nb2O9:xDy3+ can be a potential material in the white light application.

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“…The CIE chromaticity coordinates and CCT are obtained from PL results and Equation ( 7), respectively. [34] CCT…”

Section: Cie Coordinates and Correlated Color Temperaturementioning

confidence: 99%

Structural and Photoluminescence Characteristics of a Novel Single‐Phase White‐Emitting Phosphor SrBi₂Nb₂O₉:Dy³⁺

Yang,

Cui,

Zhang

et al. 2024

Physica Status Solidi (b)

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“…By adjusting the Dy 3+ concentration and matrix environment, different yellow-blue ratios (Y/B) can be manipulated to achieve white-light emission. [26][27][28] Our group reported smart white lighting by incorporating Dy 3+ and Ba(Sc 0.5 Nb 0.5 )O 3 solid solution into KNN matrix. 29 However, composition is complex, and the prepared ceramics owned small amount of secondary phases; meanwhile, their electrical properties were mediocre that limited the multifunctionality.…”

Section: Introductionmentioning

confidence: 99%

“…Among RE 3+ , Dy 3+ can simultaneously emit blue, yellow, and weak red light. By adjusting the Dy 3+ concentration and matrix environment, different yellow–blue ratios (Y/B) can be manipulated to achieve white‐light emission 26–28 . Our group reported smart white lighting by incorporating Dy 3+ and Ba(Sc 0.5 Nb 0.5 )O 3 solid solution into KNN matrix 29 .…”

Section: Introductionmentioning

confidence: 99%

Dy/Sr‐codoped (K_0.5Na_0.5)NbO₃ multifunctional transparent‐ferroelectric ceramics with adjustable white‐light emission

Huang,

Zhang,

et al. 2023

J Am Ceram Soc.

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Traditional solid‐state luminescent materials (e.g., phosphors and microcrystalline glasses) have attracted extensive attention due to their high energy efficiency and long lifespan. However, their application scope is limited by complex compositions and manufacturing processes, as well as single‐function. In this study, solid‐state reaction was utilized to prepare transparent‐ferroelectric (K0.5Na0.5)NbO3 (KNN) ceramics by simply codoping with Dy3+ and Sr2+, providing possibilities for large‐scale production. Ceramics exhibit high optical transmittance, high‐quality white‐light emission and relaxor ferroelectric feature. Under irradiation of UV light, photochromic behavior occurring in the ceramics, resulting in modulating the optical performances, especially quality of emitted white light. Multifunctionality can expand latent applications of KNN‐based ceramics from white light‐emitting diodes to modulated optoelectronic devices.

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Study of crystallographic and optoelectronic behavior of single-phase Ca9La(VO4)7: Sm3+ nanophosphor for modern illumination sector

Dalal,

Kumar,

Devi

et al. 2024

J Opt

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Synthesis and luminescence enhancement of white-emitting Ca9La(VO4)7:Dy3+ phosphors through Gd3+ and Al3+ codoping for white-light-emitting diodes

Cited by 11 publications

References 59 publications

Structural and Photoluminescence Characteristics of a Novel Single‐Phase White‐Emitting Phosphor SrBi₂Nb₂O₉:Dy³⁺

Structural and Photoluminescence Characteristics of a Novel Single‐Phase White‐Emitting Phosphor SrBi₂Nb₂O₉:Dy³⁺

Dy/Sr‐codoped (K_0.5Na_0.5)NbO₃ multifunctional transparent‐ferroelectric ceramics with adjustable white‐light emission

Study of crystallographic and optoelectronic behavior of single-phase Ca9La(VO4)7: Sm3+ nanophosphor for modern illumination sector

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Synthesis and luminescence enhancement of white-emitting Ca9La(VO4)7:Dy3+ phosphors through Gd3+ and Al3+ codoping for white-light-emitting diodes

Cited by 11 publications

References 59 publications

Structural and Photoluminescence Characteristics of a Novel Single‐Phase White‐Emitting Phosphor SrBi2Nb2O9:Dy3+

Structural and Photoluminescence Characteristics of a Novel Single‐Phase White‐Emitting Phosphor SrBi2Nb2O9:Dy3+

Dy/Sr‐codoped (K0.5Na0.5)NbO3 multifunctional transparent‐ferroelectric ceramics with adjustable white‐light emission

Study of crystallographic and optoelectronic behavior of single-phase Ca9La(VO4)7: Sm3+ nanophosphor for modern illumination sector

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Product

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Structural and Photoluminescence Characteristics of a Novel Single‐Phase White‐Emitting Phosphor SrBi₂Nb₂O₉:Dy³⁺

Structural and Photoluminescence Characteristics of a Novel Single‐Phase White‐Emitting Phosphor SrBi₂Nb₂O₉:Dy³⁺

Dy/Sr‐codoped (K_0.5Na_0.5)NbO₃ multifunctional transparent‐ferroelectric ceramics with adjustable white‐light emission