Development of novel Na2Mg3Zn2Si12O30:Eu3+ red phosphor for white light emitting diodes

Kanmani, G.V.; Ponnusamy, V.; Rajkumar, G. Abraham; Jose, M.T.

doi:10.1016/j.optmat.2019.109350

Cited by 26 publications

(8 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The luminescence property of the Na 2 Mg 3 Zn 2 Si 12 O 30 :Eu 3+ phosphor was investigated, and all of the phosphor compositions showed red emission with high color purity ∼99.6%. Na 2 Mg 3 Zn 2 Si 12 O 30 : Eu 3+ displays good thermal stability and retains 75% of its initial intensity at 423 K (with activation energy of 0.258 eV) 219. Eu 3+ -doped Li 2 Al 2 Si 3 O 10 red phosphor showed the optimum dopant concentration at 0.02.…”

mentioning

confidence: 99%

Recent progress in trivalent europium (Eu³⁺)-based inorganic phosphors for solid-state lighting: an overview

Singh¹,

Pradhan²,

Priya³

et al. 2023

Dalton Trans.

View full text Add to dashboard Cite

show abstract

mentioning

confidence: 99%

Recent progress in trivalent europium (Eu³⁺)-based inorganic phosphors for solid-state lighting: an overview

Singh¹,

Pradhan²,

Priya³

et al. 2023

Dalton Trans.

View full text Add to dashboard Cite

show abstract

“…70-4252) diffraction powder card without observation of any obvious impurity peaks, indicating that the LMTO: x Er 3+ phosphors were successfully prepared. Moreover, it could be identified that the low concentration of Er 3+ did not affect the host lattice via replacing the La 3+ sites because of a similar radius and valence balance, which could be confirmed by calculating the percentage difference of radius ( D r ) based on the following expression: − When CN was 6, the radius of the La 3+ ions, R 1 (CN), was 1.032 Å, and the radius of doping ions, R 2 (CN), was 0.89 Å for Er 3+ ions. Therefore, the percentage difference of radius ( D r ) exhibited about 13.75% for CN = 6.…”

Section: Resultsmentioning

confidence: 87%

Strong Green Emission of Erbium(III)-Activated La₂MgTiO₆ Phosphors for Solid-State Lighting and Optical Temperature Sensors

Hua

2021

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

In this work, novel green-emitting La 2 MgTiO 6 :Er 3+ (LMTO:Er 3+ ) phosphors were successfully synthesized. The phase structure, electronic structure, morphology, luminescence behaviors, and other optical characteristics were investigated in detail. Besides, the optical sensing properties of the thermal-coupled levels ( 2 H 11/2 , 4 S 3/2 ) were investigated based on the fluorescence intensity ratio principle, and the maximum absolute and relative sensing sensitivities were found to be as high as 0.963% and 1.107% K −1 , respectively. The packaged light-emitting diode (LED) emitted the near-white light with a color-rendering index of 77.12 and a proper correlated color temperature of 4989 K, respectively. Finally, the novel polydimethylsiloxane film-converted LED structure was fabricated. All the above results suggest that the novel LMTO:Er 3+ phosphors are proposed for solid-state lighting and luminescent thermometers.

show abstract

“…If Eu 2 O 3 was used as the activator, and the mixed powders were synthesized in a non-reduction atmosphere, the phosphors would emit red light − rather than blue or green light. , The PLE spectra of the air atmosphere-synthesized Ca 2+ x MgSi 2 Eu 0.025 O 7+ x phosphors were recorded at room temperature and monitored at 616 nm with an excitation band in the range of 200–450 nm. As shown in Figure a, for the Ca 2 MgSi 2 Eu 0.025 O 7 phosphor, there is one broad peak centered at about 235 nm and three sharp peaks centered at 361, 380, and 392 nm.…”

Section: Resultsmentioning

confidence: 99%

Effects of Composition Variations on the Crystalline Phases and Photoluminescence Properties of Ca_2+xMgSi₂Eu_0.025O_7+x Phosphors

Tseng

Yang

et al. 2022

ACS Omega

View full text Add to dashboard Cite

A solid-state reaction method was used to synthesize Ca 2+x MgSi 2 Eu 0.025 O 7+x (x = 0−1.0) powders in the air atmosphere and in a reduction atmosphere (95% N 2 + 5% H 2 ) at 1350 °C and 4 h, and the reduction atmosphere was removed at 800 °C. Only the Ca 2 MgSi 2 O 7 phase was found in the XRD pattern of the synthesized Ca 2 MgSi 2 Eu 0.025 O 7 powder. The first important discovery was that when the x value of Ca 2+x MgSi 2 Eu 0.025 O 7+x powders was increased from 0.2 to 0.8, both Ca 2 MgSi 2 O 7 and Ca 3 MgSi 2 O 8 phases coexisted in the synthesized Ca 2+x MgSi 2 Eu 0.025 O 7+x powders, and the diffraction intensity of the Ca 2 MgSi 2 O 7 (Ca 3 MgSi 2 O 8 ) phase decreased (increased) with the x value. The second important discovery was that the Ca 2 MgSi 2 Eu 0.025 O 7 phosphor exhibited stronger photoluminescence excitation (PLE), photoluminescence (PL), and decay curve properties than the Ca 2.2 MgSi 2 Eu 0.025 O 7.2 phosphor, and the Ca 3 MgSi 2 Eu 0.025 O 8 phosphor exhibited stronger PLE, PL, and decay curve properties than the Ca 2+x MgSi 2 Eu 0.025 O 7+x phosphors for x = 0.4, 0.6, and 0.8. For x = 0.2−0.8, the PL spectra of the Ca 2+x MgSi 2 Eu 0.025 O 7+x phosphors were a combination of the PL spectra of Ca 2 MgSi 2 Eu 0.025 O 7 and Ca 3 MgSi 2 Eu 0.025 O 8 phosphors. The third important discovery was that as the x value was increased, the maximum emission peak wavelengths of the Ca 2+x MgSi 2 Eu 0.025 O 7+x phosphors shifted to a lower value, the maximum emission intensity of the PL spectra increased, and the emission light changed from green and cyan to blue.

show abstract

Development of novel Na2Mg3Zn2Si12O30:Eu3+ red phosphor for white light emitting diodes

Cited by 26 publications

References 56 publications

Recent progress in trivalent europium (Eu³⁺)-based inorganic phosphors for solid-state lighting: an overview

Recent progress in trivalent europium (Eu³⁺)-based inorganic phosphors for solid-state lighting: an overview

Strong Green Emission of Erbium(III)-Activated La₂MgTiO₆ Phosphors for Solid-State Lighting and Optical Temperature Sensors

Effects of Composition Variations on the Crystalline Phases and Photoluminescence Properties of Ca_2+xMgSi₂Eu_0.025O_7+x Phosphors

Contact Info

Product

Resources

About

Development of novel Na2Mg3Zn2Si12O30:Eu3+ red phosphor for white light emitting diodes

Cited by 26 publications

References 56 publications

Recent progress in trivalent europium (Eu3+)-based inorganic phosphors for solid-state lighting: an overview

Recent progress in trivalent europium (Eu3+)-based inorganic phosphors for solid-state lighting: an overview

Strong Green Emission of Erbium(III)-Activated La2MgTiO6 Phosphors for Solid-State Lighting and Optical Temperature Sensors

Effects of Composition Variations on the Crystalline Phases and Photoluminescence Properties of Ca2+xMgSi2Eu0.025O7+x Phosphors

Contact Info

Product

Resources

About

Recent progress in trivalent europium (Eu³⁺)-based inorganic phosphors for solid-state lighting: an overview

Recent progress in trivalent europium (Eu³⁺)-based inorganic phosphors for solid-state lighting: an overview

Strong Green Emission of Erbium(III)-Activated La₂MgTiO₆ Phosphors for Solid-State Lighting and Optical Temperature Sensors

Effects of Composition Variations on the Crystalline Phases and Photoluminescence Properties of Ca_2+xMgSi₂Eu_0.025O_7+x Phosphors