2023
DOI: 10.1021/acsanm.3c01547
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Europium-Doped Calcium Silicate Nanoparticles as High-Quantum-Yield Red-Emitting Phosphors

Abstract: Europium ion-activated calcium silicate phosphors (Ca 2 SiO 4 :Eu 3+ ) with sharp red-light emission were fabricated via the hydrothermal method. The size of Ca 2 SiO 4 :Eu 3+ phosphors was controlled between 20 and 200 nm by precursor silicate particle sizes. Systematic studies to determine morphology, crystal phase, and photoluminescence (PL) were carried out for all the phosphors, and their optical efficiencies were compared. We found that the luminescence intensity and emission wavelength of Ca 2 SiO 4 :Eu… Show more

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Cited by 8 publications
(8 citation statements)
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“…Conclusively, the Ca 2–0.05 SiO 4 : 0.05 Eu 3+ nanoparticles prepared with 20 nm silica showed significantly enhanced red emission (quantum efficiency: 87.95%, color purity: 99.8%) and a 400% increase in photoluminescence compared to the commercial silica one at 712 nm transition (Figure b). This enhanced optical performance is attributed to structural and spectroscopic alterations due to crystal size control …”
Section: Resultsmentioning
confidence: 99%
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“…Conclusively, the Ca 2–0.05 SiO 4 : 0.05 Eu 3+ nanoparticles prepared with 20 nm silica showed significantly enhanced red emission (quantum efficiency: 87.95%, color purity: 99.8%) and a 400% increase in photoluminescence compared to the commercial silica one at 712 nm transition (Figure b). This enhanced optical performance is attributed to structural and spectroscopic alterations due to crystal size control …”
Section: Resultsmentioning
confidence: 99%
“…Specifically, under 270 nm excitation, the Ca 2–0.05 SiO 4 : 0.05 Eu 3+ sample with 20 nm silica showed a 35% increase in emission efficiency across the 575–725 nm spectrum compared to that of the sample with commercial silica. Under 397 nm excitation, the emission efficiency rose 130% in the same spectral range . These PLE and PL spectra results suggest that the Ca 2–0.05 SiO 4 : 0.05 Eu 3+ phosphor synthesized with 20 nm silica has superior UV absorption and effectively channels the excitation energy to the Eu 3+ ions, resulting in efficient PL emission.…”
Section: Resultsmentioning
confidence: 99%
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