Judd-Ofelt analysis and NIR spectroscopy properties of Nd3+-doped Na2O/NaF-Al2O3-Y2O3-P2O5 glass and transparent glass-ceramics containing NaYP2O7 crystals

Liang, Haozhang; Lin, Xiangtao; Ma, Nanshan; Tong, Juxia; He, Longqing; Luo, Zhiwei; Ye, Lingying; Lu, Anxian

doi:10.1016/j.ceramint.2023.12.108

Cited by 3 publications

(1 citation statement)

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“…This temperature difference reaches $274.25 C. Such a great value reveals that the produced glass has a good potential for synthesizing nanocomposite glass ceramics. Physically, a slight temperature difference between T c and T g is more favorable for homogeneous nucleation and bulk crystallization [30][31][32].…”

Section: Braggmentioning

confidence: 99%

Optical properties investigation and multicolor behavior of neodymium (Nd³⁺)‐doped oxyfluoride silicate glasses SiO₂‐PbO‐PbF₂

Boubekri,

Fartas,

Diaf

et al. 2024

Luminescence

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The aim of this research is to investigate novel compositions of oxyfluoride glasses doped with Neodymium (Nd3+) rare earth ions in the visible spectrum. This area has not been extensively studied in the existing literature, so it is vital to understand the favorable photoluminescence characteristics within this part of the electromagnetic spectrum. Therefore, we synthesized and characterized SiO2‐PbO‐PbF2 (SPF) doped with 1% neodymium (Nd3+) ions glasses. Spectroscopic analyses, based on Judd–Ofelt theory, were conducted on absorption spectra. These analyses enabled to determine absorption cross‐sections, transition probabilities, and Judd–Ofelt intensity parameters Ω2, Ω4, and Ω6 for the different transition. Additionally, we calculated various radiative properties, such as branching ratios, integrated cross‐sections, radiative lifetimes, emission cross‐section, optical gain, and the multicolor behavior (chromaticity coordinates, CIE diagram) under different excitation wavelengths. The results suggest promising prospects for using these oxyfluoride silicate glasses doped with Nd3+ as a fluorophore, potentially for lasing materials around 630‐nm emission and in other photonic applications.

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Section: Braggmentioning

confidence: 99%

Optical properties investigation and multicolor behavior of neodymium (Nd³⁺)‐doped oxyfluoride silicate glasses SiO₂‐PbO‐PbF₂

Boubekri,

Fartas,

Diaf

et al. 2024

Luminescence

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High color‐purity broad orange‐red emission of Mn²⁺‐doped transparent phosphate glass–ceramics embedded NaYP₂O₇ crystals

Liang,

Lin,

et al. 2024

J Am Ceram Soc.

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In this work, novel Mn2+‐doped transparent NaYP2O7 glass–ceramics were prepared through melt‐quenching and subsequent thermal treatment. The surface crystallization method was confirmed based on the differential scanning calorimeter, X‐ray diffraction, and scanning electron microscope characterization. As the increase and prolong of the heat‐treatment temperature and time, the crystallinity of the NaYP2O7 glass–ceramics increases, while the transmittance gradually decreases. The optimal heat‐treatment regime is identified to be crystallized over 4 h at 580°C based on the crystallinity and transmittance. Under the excitation of 408 nm, both the Mn2+‐doped precursor glass and glass–ceramic crystallized at 580°C for 4 h generate a broad emission at 620 nm (4T2(g)→6A1(s)) with a full width at half‐maximum (FWHM) of ∼107 nm. The glass–ceramics exhibit higher emission intensity and longer decay lifetime than that of precursor glass with the aid of the low phonon energy NaYP2O7 crystals. The Mn2+‐doped glass–ceramic exhibits stable orange‐red luminescence with the chromaticity coordinates of (0.568, 0.428), low correlation color temperature of 1 800 K, high color purity of 98.88%, and low thermal quenching (70% at 373 K of the initial intensity at 298 K). The above results indicate that Mn2+‐doped transparent NaYP2O7 glass–ceramics have promising potential for orange‐red color display devices.

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Up‐conversion luminescence of Er³⁺/Yb³⁺ co‐doped Gd₂Te₆O₁₅ tellurite glass‐ceramics for optical thermometry

Liang,

Lin,

et al. 2024

J Am Ceram Soc.

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The Er3+/Yb3+ co‐doped tellurite glasses and glass‐ceramics (GCs) containing the Gd2Te6O15 phase were successfully fabricated via the conventional melting‐quenching technique followed by a crystallization regime. The Er3+/Yb3+ co‐doped tellurite glasses generated intense up‐conversion green (524 and 546 nm) and red (658 nm) emissions when stimulated by a 980 nm laser. The up‐conversion green emission intensity increased by 68 and 46 times with the increase of the Yb3+/Er3+ ratio, and the optimal Yb3+/Er3+ ratio was found to be 8:1. The surface crystallization process of the Gd2Te6O15 GCs was confirmed through analysis of crystallization kinetics and microscopic morphology. The up‐conversion luminescence and lifetime of Er3+ ions were enhanced by the precipitation of low‐phonon‐energy Gd2Te6O15 crystals. The GC sample crystallized at 480°C for 4 h showed the highest luminescence intensity. The optical thermometry properties of Er3+ ions at thermally coupled energy levels (2H11/2/4S3/2→4I15/2) were explored. The Gd2Te6O15 GCs co‐doped with 0.25 mol% Er2O3 and 2.0 mol% Yb2O3 exhibited an excellent temperature relative sensitivity (Sr) of 1.22% K−1 at 293 K and a great repeatability of 98.07%. These results suggest that the Er3+/Yb3+ co‐doped Gd2Te6O15 GCs show promise for optical thermometry.

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Judd-Ofelt analysis and NIR spectroscopy properties of Nd3+-doped Na2O/NaF-Al2O3-Y2O3-P2O5 glass and transparent glass-ceramics containing NaYP2O7 crystals

Cited by 3 publications

References 50 publications

Optical properties investigation and multicolor behavior of neodymium (Nd³⁺)‐doped oxyfluoride silicate glasses SiO₂‐PbO‐PbF₂

Optical properties investigation and multicolor behavior of neodymium (Nd³⁺)‐doped oxyfluoride silicate glasses SiO₂‐PbO‐PbF₂

High color‐purity broad orange‐red emission of Mn²⁺‐doped transparent phosphate glass–ceramics embedded NaYP₂O₇ crystals

Up‐conversion luminescence of Er³⁺/Yb³⁺ co‐doped Gd₂Te₆O₁₅ tellurite glass‐ceramics for optical thermometry

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Judd-Ofelt analysis and NIR spectroscopy properties of Nd3+-doped Na2O/NaF-Al2O3-Y2O3-P2O5 glass and transparent glass-ceramics containing NaYP2O7 crystals

Cited by 3 publications

References 50 publications

Optical properties investigation and multicolor behavior of neodymium (Nd3+)‐doped oxyfluoride silicate glasses SiO2‐PbO‐PbF2

Optical properties investigation and multicolor behavior of neodymium (Nd3+)‐doped oxyfluoride silicate glasses SiO2‐PbO‐PbF2

High color‐purity broad orange‐red emission of Mn2+‐doped transparent phosphate glass–ceramics embedded NaYP2O7 crystals

Up‐conversion luminescence of Er3+/Yb3+ co‐doped Gd2Te6O15 tellurite glass‐ceramics for optical thermometry

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Optical properties investigation and multicolor behavior of neodymium (Nd³⁺)‐doped oxyfluoride silicate glasses SiO₂‐PbO‐PbF₂

Optical properties investigation and multicolor behavior of neodymium (Nd³⁺)‐doped oxyfluoride silicate glasses SiO₂‐PbO‐PbF₂

High color‐purity broad orange‐red emission of Mn²⁺‐doped transparent phosphate glass–ceramics embedded NaYP₂O₇ crystals

Up‐conversion luminescence of Er³⁺/Yb³⁺ co‐doped Gd₂Te₆O₁₅ tellurite glass‐ceramics for optical thermometry