Revealing the multicolor mechanism in borotellurite glass phosphor: From individual emission of dual-modes to WLED applications

An, J.M.; Li, D.S.; He, Xiaowu; Pun, Edwin Yue‐Bun; Lin, Hai

doi:10.1016/j.jlumin.2021.117972

Cited by 18 publications

(4 citation statements)

References 65 publications

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“…Moreover, the left inset of Figure 5B shows the energy transfer mechanism monitored at 579 nm for Dy 3+ , which correspond to S equal to 6, 8, or 10, respectively, to demonstrate the best‐fit result. Meanwhile, the fitting curve exhibits optimal shape when S equals 6 which the optimal fitting result of R 2 is 0.98, and dipole–dipole has confirmed the dominant interplay mechanism in Dy 2 O 3 ‐doped LNKBAS glass 39–41 …”

Section: Resultsmentioning

confidence: 79%

“…Therefore, LNKBAS glass transition temperature ( T g ) occurs at 407°C, the softening temperature ( T f ) locates at 470°C, and the crystallization temperature ( T c ) measures at 631°C, respectively. Obviously, the large temperature difference among T g , T f , and T c of LNKBAS glass indicates strong thermal stability and outstanding crystallization inhibition effect 16,39 . Insets show photographs of LNKBASDy 1.0 viewed with a light microscope, clearly showing the outline of the pores and their sizes range from 50 to 100 μm.…”

Section: Resultsmentioning

confidence: 99%

“…Obviously, the large temperature difference among T g , T f , and T c of LNKBAS glass indicates strong thermal stability and outstanding crystallization inhibition effect. 16,39 Insets show photographs of LNKBASDy 1.0 viewed with a light microscope, clearly showing the outline of the pores and their sizes range from 50 to 100 μm. The pores can increase refraction and reflection to obtain a more uniform luminous effect.…”

Section: Structural and Morphological Analysismentioning

confidence: 99%

“…Meanwhile, the fitting curve exhibits optimal shape when 𝑆 equals 6 which the optimal fitting result of R 2 is 0.98, and dipoledipole has confirmed the dominant interplay mechanism in Dy 2 O 3 -doped LNKBAS glass. [39][40][41]…”

Section: Spectral Properties Of Dy 3+ -Doped Lnkbas Glassesmentioning

confidence: 99%

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Excitation expansion in the high‐energy UV region for Dy³⁺‐doped medium‐temperature molten silicate glass phosphors

Tian

et al. 2022

J Am Ceram Soc.

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Medium‐temperature molten Dy3+‐doped silicate (LNKBAS) glass phosphors can be excited efficiently in the low‐energy ultraviolet region (UVA). To this end, the addition of sensitizers Sb3+ and Ce3+ expands the validly excitable wavelength of Dy3+ from 348 to 248 nm. Fluorescence spectra demonstrate the superposition effect of the sensitization in the high‐energy ultraviolet region (UVC), and the multiplicative effect of sensitization in the UVA and medium‐energy ultraviolet region (UVB) for Sb3+–Ce3+–Dy3+ tri‐doped LNKBAS glass phosphors. The chromaticity coordinate of LNKBASCe0.04Sb0.1Dy1.0 is (0.2725, 0.3031) at 248 nm excitation, and the sensitization coefficient of LNKBASCe0.04Sb0.2Dy1.0 reaches at 19.85 under 309 nm excitation. Static fluorescence photographs and dynamic fluorescence video reveal the excitation expansion and the multiplicative effect of sensitization to Dy3+ by adding sensitizers at a macroscopic level. In general, the ideal rare‐earth energy conversion in medium‐temperature molten silicate glass phosphors offers promising prospects for saving energy and manufacturing high‐quality optoelectronic devices.

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Section: Resultsmentioning

confidence: 79%

Section: Resultsmentioning

confidence: 99%

Section: Structural and Morphological Analysismentioning

confidence: 99%

Section: Spectral Properties Of Dy 3+ -Doped Lnkbas Glassesmentioning

confidence: 99%

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Excitation expansion in the high‐energy UV region for Dy³⁺‐doped medium‐temperature molten silicate glass phosphors

Tian

et al. 2022

J Am Ceram Soc.

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White light emission and thermoluminescence studies of Dy³⁺‐activated hardystonite (Ca₂ZnSi₂O₇) phosphor

Chandraker¹,

Kaur²,

Priya

et al. 2021

Luminescence

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Here, we report the photoluminescence and thermoluminescent properties of Dy‐activated Ca2ZnSi2O7 phosphors synthesized using the solid‐state method. The synthesized phosphors showed hardystonite type structure, and had micron‐sized particles. Fourier transform infrared spectroscopy (FTIR) showed the existence of the functional groups and confirmed the formation of phosphor and photoluminescence techniques. The phosphors under excitation at 239 nm exhibited green‐yellow emission spectra in the region 481–575 nm corresponding to the 4F9/2→6H15/2 and 4F9/2→6H13/2 transitions of Dy3+ ions. The Commission Internationale de l'Eclairage (CIE) coordinates were achieved to be (0.25, 0.27), which was narrowly close to the white region. Thermoluminescence (TL) glow curve analysis of prepared Dy3+‐activated Ca2ZnSi2O7 phosphors were recorded for different ultraviolet (UV) light exposure times and found to have a linear response with dose. The TL glow curves, recorded with various UV exposure times ranging from 5 to 25 min, showed a linear response with dosage. The corresponding kinetic parameters were also calculated using a computerized glow curve deconvolution (CGCD) technique. Activation energy was observed to enhance the increase in the peak temperature and its value was substantially higher for the third peak fitted using CGCD. The obtained results indicated that the synthesized pristine phosphors could be potentially used for lighting, displays, and dosimetric applications.

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Effects of Ce3+/Sm3+ co-doping as a luminescent modifier in borotellurite glasses for solid-state lighting

Tuyen

Hong

Sơn

et al. 2023

J Mater Sci: Mater Electron

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Revealing the multicolor mechanism in borotellurite glass phosphor: From individual emission of dual-modes to WLED applications

Cited by 18 publications

References 65 publications

Excitation expansion in the high‐energy UV region for Dy³⁺‐doped medium‐temperature molten silicate glass phosphors

Excitation expansion in the high‐energy UV region for Dy³⁺‐doped medium‐temperature molten silicate glass phosphors

White light emission and thermoluminescence studies of Dy³⁺‐activated hardystonite (Ca₂ZnSi₂O₇) phosphor

Effects of Ce3+/Sm3+ co-doping as a luminescent modifier in borotellurite glasses for solid-state lighting

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Revealing the multicolor mechanism in borotellurite glass phosphor: From individual emission of dual-modes to WLED applications

Cited by 18 publications

References 65 publications

Excitation expansion in the high‐energy UV region for Dy3+‐doped medium‐temperature molten silicate glass phosphors

Excitation expansion in the high‐energy UV region for Dy3+‐doped medium‐temperature molten silicate glass phosphors

White light emission and thermoluminescence studies of Dy3+‐activated hardystonite (Ca2ZnSi2O7) phosphor

Effects of Ce3+/Sm3+ co-doping as a luminescent modifier in borotellurite glasses for solid-state lighting

Contact Info

Product

Resources

About

Excitation expansion in the high‐energy UV region for Dy³⁺‐doped medium‐temperature molten silicate glass phosphors

Excitation expansion in the high‐energy UV region for Dy³⁺‐doped medium‐temperature molten silicate glass phosphors

White light emission and thermoluminescence studies of Dy³⁺‐activated hardystonite (Ca₂ZnSi₂O₇) phosphor