Molten salt synthesis and optical properties of Eu3+, Dy3+or Nd3+ doped NiNb2O6 columbite-type phosphors

Ekmekçi, Mete Kaan; Erdem, Murat; Başak, Ali Sadi; İlhan, Mustafa; Mergen, A.

doi:10.1016/j.ceramint.2015.04.036

Cited by 12 publications

(12 citation statements)

References 24 publications

(26 reference statements)

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“…The syntheses of (Cd,Ni)Nb 2 O 6 :Eu 3+ (ref. 13 and 14 ) and SrNb 2 O 6 :Nd 3+ , Dy 3+ (ref. 7 and 8 ) were reported as intermediate solid solutions.…”

Section: Methodsmentioning

confidence: 99%

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Judd–Ofelt parameters and X-ray irradiation results of MNb₂O₆:Eu³⁺ (M = Sr, Cd, Ni) phosphors synthesized via a molten salt method

2021

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“…The syntheses of (Cd,Ni)Nb 2 O 6 :Eu 3+ (ref. 13 and 14 ) and SrNb 2 O 6 :Nd 3+ , Dy 3+ (ref. 7 and 8 ) were reported as intermediate solid solutions.…”

Section: Methodsmentioning

confidence: 99%

“… 13 ) and NiNb 2 O 6 :Eu 3+ (ref. 14 ) were included in the study, and the Judd–Ofelt intensity parameters and radioluminescence results of MNb 2 O 6 :Eu 3+ (M = Sr, Cd, Ni) phosphors were reported by comparison with PL and RL analyses. Also, the grain structures of three compounds were examined by SEM analysis.…”

Section: Introductionmentioning

confidence: 99%

Judd–Ofelt parameters and X-ray irradiation results of MNb₂O₆:Eu³⁺ (M = Sr, Cd, Ni) phosphors synthesized via a molten salt method

2021

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“…The synthesis of luminescent materials by Molten salt method also attracted wide attention. 9,29,30 The essence of molten salt method is to grow crystals from a molten salt agent at a high temperature, and the process is similar to that of growing crystals from an aqueous solution. Therefore, it is possible to prepare Mn 4+ -doped fluoride red phosphor by free-HF melting salt method.…”

Section: Introductionmentioning

confidence: 99%

“…Molten salt synthesis is a well‐established, low‐cost technique of forming a desirable compound in a flux of low melting point. The synthesis of luminescent materials by Molten salt method also attracted wide attention 9,29,30 . The essence of molten salt method is to grow crystals from a molten salt agent at a high temperature, and the process is similar to that of growing crystals from an aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

HF‐free molten salt route for synthesis of highly efficient and water‐resistant K₂SiF₆:Mn⁴⁺ for warm white LED

Liao

Jin-quan

et al. 2020

J Am Ceram Soc

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Solid-state white-light-emitting diodes (WLEDs) have attracted more and more attention for its long lifetime, high efficiency, low cost, and environment-friendly relative to incandescent and fluorescent of traditional lighting. 1−4 At present, the white light of commercial WLED is mainly obtained through the combination of blue InGaN chip and Y 3 Al 5 O 12 :Ce 3+ (YAG:Ce 3+) yellow phosphor. Due to the deficiency of red emission, the inherent disadvantages of these WLEDs, such as low color rendering index (CRI, Ra<80) and high color temperature (CCT>6000K), limit their application in illuminating system. 5−8 Fortunately, some red-emitting phosphors that can be added directly to commercial WLED to improve the quality of LEDs have been developed. The non-rare-earth ion Mn 4+ has attracted our attention because its emission peak is located in the red region of 620 to 750 nm under blue and ultraviolet light excitation. 9−11 Among the Mn 4+-doped red phosphors, the emission peak of the Mn 4+-doped fluoride is located at 620 to 640 nm due to the weak coordination bond. In recent years, various Mn 4+activated fluoride phosphors such as A 2 XF 6 :Mn 4+ (A = K, Na, Cs, etc X = Si, Ge, Ti, etc) are gradually replacing the Eu 2+-doped nitride as red phosphors for manufacture the WLEDs because of their superior thermal stability, optical properties, and facile synthetic condition. 12−18

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“…The scientific community have shown immense interest in the study of mixed sulphate systems for various applications . The earlier efforts have focussed on the application of mixed sulphates as flux for the synthesis of several niobate materials . Most of the time, a mixture of Li 2 SO 4 and Na 2 SO 4 salts were used to complete the synthesis at relatively lower temperatures than those involved in solid state diffusion .…”

Section: Introductionmentioning

confidence: 99%

Green‐light emission through energy transfer from Ce³⁺ to Tb³⁺ ions in the Li₂SO₄–Al₂(SO₄)₃ system

2019

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An energy transfer process from Ce3+ to Tb3+ ions was successfully achieved in a Li2SO4–Al2(SO4)3 mixed‐sulphate system. A wet‐chemical synthesis was employed to prepare the Li2SO4–Al2(SO4)3 system by doping Ce3+ and Tb3+ ions individually as well as collectively. The phases were identified using X‐ray diffraction studies. The as‐prepared samples were characterized by FT‐IR and photoluminescence measurements. Green‐light emission was exhibited by Ce3+, Tb3+ co‐doped Li2SO4–Al2(SO4)3 system, thus, indicating its potential as a material for display devices or in the lamp industry.

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Molten salt synthesis and optical properties of Eu3+, Dy3+or Nd3+ doped NiNb2O6 columbite-type phosphors

Cited by 12 publications

References 24 publications

Judd–Ofelt parameters and X-ray irradiation results of MNb₂O₆:Eu³⁺ (M = Sr, Cd, Ni) phosphors synthesized via a molten salt method

Judd–Ofelt parameters and X-ray irradiation results of MNb₂O₆:Eu³⁺ (M = Sr, Cd, Ni) phosphors synthesized via a molten salt method

HF‐free molten salt route for synthesis of highly efficient and water‐resistant K₂SiF₆:Mn⁴⁺ for warm white LED

Green‐light emission through energy transfer from Ce³⁺ to Tb³⁺ ions in the Li₂SO₄–Al₂(SO₄)₃ system

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Molten salt synthesis and optical properties of Eu3+, Dy3+or Nd3+ doped NiNb2O6 columbite-type phosphors

Cited by 12 publications

References 24 publications

Judd–Ofelt parameters and X-ray irradiation results of MNb2O6:Eu3+ (M = Sr, Cd, Ni) phosphors synthesized via a molten salt method

Judd–Ofelt parameters and X-ray irradiation results of MNb2O6:Eu3+ (M = Sr, Cd, Ni) phosphors synthesized via a molten salt method

HF‐free molten salt route for synthesis of highly efficient and water‐resistant K2SiF6:Mn4+ for warm white LED

Green‐light emission through energy transfer from Ce3+ to Tb3+ ions in the Li2SO4–Al2(SO4)3 system

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Product

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Judd–Ofelt parameters and X-ray irradiation results of MNb₂O₆:Eu³⁺ (M = Sr, Cd, Ni) phosphors synthesized via a molten salt method

Judd–Ofelt parameters and X-ray irradiation results of MNb₂O₆:Eu³⁺ (M = Sr, Cd, Ni) phosphors synthesized via a molten salt method

HF‐free molten salt route for synthesis of highly efficient and water‐resistant K₂SiF₆:Mn⁴⁺ for warm white LED

Green‐light emission through energy transfer from Ce³⁺ to Tb³⁺ ions in the Li₂SO₄–Al₂(SO₄)₃ system