Novel Sb3+/Eu3+ Co-doped phosphate luminescent glasses with adjustable emission

Yu, Qing; Zeng, Huidan; Zhao, Liang; Ren, Jing; Chen, Guorong; Wang, Zhaofeng; Sun, Luyi

doi:10.1016/j.jallcom.2013.11.149

Cited by 15 publications

(4 citation statements)

References 18 publications

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“…Antimony(III) compounds are known to show an excitation band in the ultraviolet range (UV) with a maximum around 270 nm corresponding to the partially forbidden 1 S 0 → 3 P 1 electronic transition. The Sb 3+ emission 3 P 1 → 1 S 0 is known to occur over a broad range (from 300 to 650 nm), and often overlaps the excitation range of trivalent lanthanoid cations, such as Eu 3+ and Tb 3+ , rendering it potentially a suitable sensitizer for lanthanoid emission [54,55]. The luminescence of Sb 3+ in LnSb 2 O 4 Br representatives with Ln = Eu-Tb can be best investigated in GdSb 2 O 4 Br as Gd 3+ only emits in the UV (typically around 310 nm) due to a transition from the 6 P 7/2 to 8 S 7/2 levels.…”

Section: Photoluminescence Spectroscopymentioning

confidence: 99%

Synthesis and Crystal Structure of the Short LnSb2O4Br Series (Ln = Eu–Tb) and Luminescence Properties of Eu3+-Doped Samples

et al. 2020

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Pale yellow crystals of LnSb2O4Br (Ln = Eu–Tb) were synthesized via high temperature solid-state reactions from antimony sesquioxide, the respective lanthanoid sesquioxides and tribromides. Single-crystal X-ray diffraction studies revealed a layered structure in the monoclinic space group P21/c. In contrast to hitherto reported quaternary lanthanoid(III) halide oxoantimonates(III), in LnSb2O4Br the lanthanoid(III) cations are exclusively coordinated by oxygen atoms in the form of square hemiprisms. These [LnO8]13− polyhedra form layers parallel to (100) by sharing common edges. All antimony(III) cations are coordinated by three oxygen atoms forming ψ1-tetrahedral [SbO3]3− units, which have oxygen atoms in common building up meandering strands along [001] according to {[SbO2/2vO1/1t]–}∞1 (v = vertex-sharing, t = terminal). The bromide anions are located between two layers of these parallel running oxoantimonate(III) strands and have no bonding contacts with the Ln3+ cations. Since Sb3+ is known to be an efficient sensitizer for Ln3+ emission, photoluminescence studies were carried out to characterize the optical properties and assess their suitability as light phosphors. Indeed, for both, GdSb2O4Br and TbSb2O4Br doped with about 1.0–1.5 at-% Eu3+ efficient sensitization of the Eu3+ emission could be detected. For TbSb2O4Br, in addition, a remarkably high energy transfer from Tb3+ to Eu3+ could be detected that leads to a substantially increased Eu3+ emission intensity, rendering it an efficient red light emitting material.

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Section: Photoluminescence Spectroscopymentioning

confidence: 99%

Synthesis and Crystal Structure of the Short LnSb2O4Br Series (Ln = Eu–Tb) and Luminescence Properties of Eu3+-Doped Samples

et al. 2020

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“…On the other hand, as one kind of well-known probe ions, the characteristic peak located at 620 nm of Eu 3+ ions will be affected by the change in the surrounding crystal field environment [18]. In many researches, Eu doped white fluorescent has been obtained by energy conversion between multi-activators, such as Eu 2+ /Eu 3+ [19], Cu 2+ /Eu 3+ [20], Ag/Eu 3+ [21], Sb 3+ /Eu 3+ [22] in proper materials.…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

Tunable white light in trivalent europium single doped tin fluorophosphates ultra-low melting glass

Mao

Cai

Xie

et al. 2019

Journal of Alloys and Compounds

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In recent years, low melting temperature glasses have received wide attention as the hosts of phosphor-converted light emitting diodes (pc-WLED). In this work, a series of trivalent europium doped tin fluorophosphates glasses were prepared by conventional melting method. Under ultraviolet excitation, the blue-green broadband emission from Sn 2+ activation centers in the glass matrix and the red emission of Eu 3+ ions together constituted a cool white luminescence. The spectra analysis was used to demonstrate the energy transfer between Sn 2+ centers and Eu 3+ ions. The results showed that Sn 2+ and Eu 3+ possessed independent intrinsic emission and mutual energy transfer simultaneously. The 5 D 4 and 5 G 2 excited states of Eu 3+ ion favored the energy transfer to Sn 2+ center, the 5 L 6 excited state of Eu 3+ ion would absorb more of the energy by the Sn 2+ ground state excitation to contribute on red emission. Therefore, the fluorescent glass can transform cool white light to warm white light by changing the excitation wavelength. The tunable white light is obtained in the WLED devices built with the glass and commercial UV chips.

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“…However, this combination still have some inherent drawbacks such as poor heat resistance, high correlated color temperature and low color rendering index due to their low thermal quenching temperature and lack of red emitting element [5]. In order to overcome the problems thoroughly, the rare-earth (RE) doped phosphors have been achieved great important applications in the development of W-LEDs [6][7][8][9][10][11]. Considering energy and environment problems, it is urgent to develop pollution-free, cheap, highly efficient white-light-emitting (WLE) materials.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Luminescent Properties in Tm³⁺/Dy³⁺Co-doped Transparent Phosphate Glass Ceramic

et al. 2016

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Abstract.Novel Tm 3+ /Dy 3+ co-doped phosphate glass and glass ceramic samples for white light emitting diodes were prepared by melt quenching method. Under 353 nm excitation, the colors of the luminescence of the glass and glass ceramic samples are white. The CIE chromaticity coordinates (0.338, 0.328) of the emission from the glass ceramic is close to the standard white-light illumination (0.333, 0.333). Compared to the glass, the fluorescence intensity in the glass ceramic is greatly enhanced.

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Novel Sb3+/Eu3+ Co-doped phosphate luminescent glasses with adjustable emission

Cited by 15 publications

References 18 publications

Synthesis and Crystal Structure of the Short LnSb2O4Br Series (Ln = Eu–Tb) and Luminescence Properties of Eu3+-Doped Samples

Synthesis and Crystal Structure of the Short LnSb2O4Br Series (Ln = Eu–Tb) and Luminescence Properties of Eu3+-Doped Samples

Tunable white light in trivalent europium single doped tin fluorophosphates ultra-low melting glass

Enhanced Luminescent Properties in Tm³⁺/Dy³⁺Co-doped Transparent Phosphate Glass Ceramic

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Novel Sb3+/Eu3+ Co-doped phosphate luminescent glasses with adjustable emission

Cited by 15 publications

References 18 publications

Synthesis and Crystal Structure of the Short LnSb2O4Br Series (Ln = Eu–Tb) and Luminescence Properties of Eu3+-Doped Samples

Synthesis and Crystal Structure of the Short LnSb2O4Br Series (Ln = Eu–Tb) and Luminescence Properties of Eu3+-Doped Samples

Tunable white light in trivalent europium single doped tin fluorophosphates ultra-low melting glass

Enhanced Luminescent Properties in Tm3+/Dy3+Co-doped Transparent Phosphate Glass Ceramic

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Enhanced Luminescent Properties in Tm³⁺/Dy³⁺Co-doped Transparent Phosphate Glass Ceramic