Color-tunable and upconversion luminescence of Gd2O2S:Er,Tm phosphor: experimental investigations and first-principles calculation

Li, Peipei; Wang, Fei; Yang, Bin; Chen, Xiumin

doi:10.1007/s00339-018-2314-x

Cited by 4 publications

(1 citation statement)

References 42 publications

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“…However, it is still difficult to synthesize Gd 2 O 2 S:Ln 3+ phosphors with high purity, low cost and excellent luminescence. For example, solid state reaction method [20] is widely used due to high experimental repeatability, excellent luminescence and low cost, but the size and morphology of particles are unable to control due to the high reaction temperature. Hydrothermal method [21] exhibits some advantages, such as low processing temperature and high purity.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and formation mechanism of Gd₂O₂S:Pr³⁺,Ce³⁺ phosphors by sealed triple-crucible method

Sang

Lian

et al. 2020

Journal of Asian Ceramic Societies

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Ln(NO 3) 3 • 6H 2 O (Ln = Gd, Pr and Ce), urea, sodium sulfite (Na 2 SO 3) and carbon powder were used as the starting materials. The precursor was synthesized with Ln(NO 3) 3 • 6H 2 O (Ln = Gd, Pr and Ce) solutions and urea at 95 °C for 4 h, and then the Gd 2 O 2 S:Pr 3+ ,Ce 3+ phosphors were prepared by calcined the precursor (in inner crucible), Na 2 SO 3 (in middle crucible) and carbon powder (in outer crucible) at 1000 °C for 2 h in a sealed environment. The X-ray powder diffraction (XRD) results confirm that the as-synthesized Gd 2 O 2 S phase has high purity and without the presence of any impurities. The field emission scanning electron microscopy (FE-SEM) inspection shows the morphology of Gd 2 O 2 S:Pr 3+ ,Ce 3+ is hexagonal in shape and about 1 μm in size. The photoluminescence (PL) spectra under 301 nm ultraviolet (UV) light excitation shows a strong green emission at 513 nm. The quenching concentration occurs at Pr 3+ ions concentration of 0.2% and its corresponding Commission Internationle de L'Eclairage (CIE) coordinates is (0.0273, 0.7921). The decay lifetimes are τ 1 = 0.248 μs and τ 2 = 1.824 μs for the Gd 2 O 2 S:0.2%Pr 3+ ,Ce 3+ phosphor. The Gd 2 O 2 S:0.2%Pr 3+ ,Ce 3+ phosphor film has excellent performance in the light utilization and the charge-transfer capability under 270 nm UV light radiation.

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Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and formation mechanism of Gd₂O₂S:Pr³⁺,Ce³⁺ phosphors by sealed triple-crucible method

Sang

Lian

et al. 2020

Journal of Asian Ceramic Societies

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Improvement in structural, electrical, and optical properties of Al-doped ZnO nanolayers by sodium carbonate prepared via solgel method

et al. 2020

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Controlled nanofibers morphology and its influence on magnetic properties by electrospinning

et al. 2020

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Color-tunable and upconversion luminescence of Gd2O2S:Er,Tm phosphor: experimental investigations and first-principles calculation

Cited by 4 publications

References 42 publications

Synthesis, characterization and formation mechanism of Gd₂O₂S:Pr³⁺,Ce³⁺ phosphors by sealed triple-crucible method

Synthesis, characterization and formation mechanism of Gd₂O₂S:Pr³⁺,Ce³⁺ phosphors by sealed triple-crucible method

Improvement in structural, electrical, and optical properties of Al-doped ZnO nanolayers by sodium carbonate prepared via solgel method

Controlled nanofibers morphology and its influence on magnetic properties by electrospinning

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Color-tunable and upconversion luminescence of Gd2O2S:Er,Tm phosphor: experimental investigations and first-principles calculation

Cited by 4 publications

References 42 publications

Synthesis, characterization and formation mechanism of Gd2O2S:Pr3+,Ce3+ phosphors by sealed triple-crucible method

Synthesis, characterization and formation mechanism of Gd2O2S:Pr3+,Ce3+ phosphors by sealed triple-crucible method

Improvement in structural, electrical, and optical properties of Al-doped ZnO nanolayers by sodium carbonate prepared via solgel method

Controlled nanofibers morphology and its influence on magnetic properties by electrospinning

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Synthesis, characterization and formation mechanism of Gd₂O₂S:Pr³⁺,Ce³⁺ phosphors by sealed triple-crucible method

Synthesis, characterization and formation mechanism of Gd₂O₂S:Pr³⁺,Ce³⁺ phosphors by sealed triple-crucible method