Crystal structure and photoluminescence of Tb3+ doped Y3GaO6

Liu, F.S.; Liu, Q.L.; Liang, Jingkui; Luo, Jianqiao; Lin-yuan, Yang; Song, G. B.; Zhang, Y.; Wang, L.X.; Yao, Jiyong; Rao, Guanghui

doi:10.1016/j.jallcom.2006.01.036

Cited by 18 publications

(8 citation statements)

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“…Moreover, the average fluorescence lifetimes of Tb 3+ ions in our experiment are basically consistent with 1.2 ms in Y 3 GaO 6 [44] and 1.69 ms in La 0.45 Ce 0.45 Tb 0.1 PO 4 nanoparticles [45], whereas slightly longer than 0.6 ms in Li 2 SiO 3 [46], obviously shorter than 4.2/4.9 ms in famous GGG/YAG [47]. This phenomenon might be due to the difference in the phonon energies of the host materials, which can affect the non-radiative transition rates [38].…”

Section: Lifetime Measurementssupporting

confidence: 86%

Visible upconversion luminescence of Tb3+ ions in Y2O3 nanoparticles induced by a near-infrared femtosecond laser

Lü

Ding

et al. 2010

Journal of Alloys and Compounds

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Section: Lifetime Measurementssupporting

confidence: 86%

Visible upconversion luminescence of Tb3+ ions in Y2O3 nanoparticles induced by a near-infrared femtosecond laser

Lü

Ding

et al. 2010

Journal of Alloys and Compounds

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“…155086. The polyhedral representation of the YGO system is shown in Figure b representing a similar crystal structure as earlier reported in the literature . The Rietveld refinements were carried out using FullProf software taking pseudo-Voigt peak profile (Figure ).…”

Section: Resultsmentioning

confidence: 97%

“…In the present study, we have tried to investigate the electrochemical properties of undoped and doped Y 3 GaO 6 systems, which is analogous to Gd 3 GaO 6 oxide-ion and proton conductors. Till now, apart from structural studies, only a few optical studies like luminescence behavior of tri-yttrium gallate (Y 3 GaO 6 ) are reported. , Here, we have explored the potential of doped Y 3 GaO 6 as an oxide-ion-conducting material. To the best of our knowledge, this is the first study on oxide-ion conduction in alkaline-earth-metal-doped Y 3 GaO 6 .…”

Section: Introductionmentioning

confidence: 99%

“…Till now, apart from structural studies, only a few optical studies like luminescence behavior of tri-yttrium gallate (Y 3 GaO 6 ) are reported. 47,48 Here, we have explored the potential of doped Y 3 GaO 6 as an oxide-ion-conducting material. To the best of our knowledge, this is the first study on oxide-ion conduction in alkaline-earth-metal-doped Y 3 GaO 6 .…”

Section: ■ Introductionmentioning

confidence: 99%

“…Y 3 GaO 6 crystallizes in the orthorhombic structure with space group Cmc2 1 . This structure contains 12-Y (eight Y ions occupy 8b, and four Y ions occupy 4a Wyckoff site), 4-Ga, and 24-O atoms in a unit cell, 48 which are made up with two edge-sharing of YO 7 pentagonal bipyramids polyhedra, making a three-dimensional (3D) framework and with a GaO 4 tetrahedron. It means that the Y 3+ cations are localized in two different asymmetrical sites of sevenfold coordination, and Ga 3+ is in distorted oxygen tetrahedral (Figure 1).…”

Section: ■ Introductionmentioning

confidence: 99%

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Signature of Oxide-Ion Conduction in Alkaline-Earth-Metal-Doped Y₃GaO₆

et al. 2020

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We have studied alkaline-earth-metal-doped Y 3 GaO 6 as a new family of oxide-ion conductor. Solid solutions of Y 3 GaO 6 and 2% −Ca 2+ -, −Sr 2+ -, and −Ba 2+ -doped Y 3 GaO 6 , i.e., Y (3−0.06) M 0.06 GaO 6−δ (M = Ca 2+ , Sr 2+ , and Ba 2+ ), were prepared via a conventional solid-state reaction route. X-ray Rietveld refined diffractograms of all the compositions showed the formation of an orthorhombic structure having the Cmc2 1 space group. Scanning electron microscopy (SEM) images revealed that the substitution of alkaline-earth metal ions promotes grain growth. Aliovalent doping of Ca 2+ , Sr 2+ , and Ba 2+ enhanced the conductivity by increasing the oxygen vacancy concentration. However, among all of the studied dopants, 2% Ca 2+ -doped Y 3 GaO 6 was found to be more effective in increasing the ionic conductivity as ionic radii mismatch is minimum for Y 3+ /Ca 2+ . The total conductivity of 2% Ca-doped Y 3 GaO 6 composition calculated using the complex impedance plot was found to be ∼0.14 × 10 −3 S cm −1 at 700 °C, which is comparable to many other reported solid electrolytes at the same temperature, making it a potential candidate for future electrolyte material for solid oxide fuel cells (SOFCs). Total electrical conductivity measurement as a function of oxygen partial pressure suggests dominating oxide-ion conduction in a wide range of oxygen partial pressure (ca. 10 −20 −10 −4 atm). The oxygen-ion transport is attributed to the presence of oxygen vacancies that arise from doping and conducting oxide-ion layers of one, two-, or three-dimensional channels within the crystal structure. The oxide-ion migration pathways were analyzed by the bond valence site energy (BVSE)-based approach. Photoluminescence analysis, dilatometry, Fourier transform infrared (FTIR) spectroscopy, and scanning electron microscopy studies were also performed to verify the experimental findings.

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Crystal Structure and Photoluminescence of Tb³⁺ Doped Y₃GaO₆.

Liu

Liang

et al. 2007

ChemInform

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Luminescence D 6540Crystal Structure and Photoluminescence of Tb 3+ Doped Y3GaO6. -The solid solution (Y 1-x Tb x ) 3 GaO 6 (x = 0-0.5) is prepared by solid state reaction using Tb 2 O 3 , Y2O3, and Ga2O3 as starting materials (1200°C 24 h). The samples are characterized by powder XRD and photoluminescence spectroscopy. They crystallize isostructurally with Gd3GaO6 in the orthorhombic space group Cm21. The materials exhibit strong green color emission at about 543 nm at room and liquid nitrogen temperatures. The sharp and strong emission and long lifetime of (Y 1-x Tb x ) 3 GaO 6 indicates that Y 3 GaO 6 is a potential phosphor and laser crystal host material. -(LIU*, F. S.; LIU, Q. L.; LIANG, J. K.; LUO, J.; YANG, L. T.; SONG, G. B.; ZHANG, Y.; WANG, L. X.; YAO, J. N.; RAO, G. H.; J. Alloys Compd. 425 (2006) 1-2, 278-283; Dep. Mater. Sci. Eng.,

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Crystal structure and photoluminescence of Tb3+ doped Y3GaO6

Cited by 18 publications

References 17 publications

Visible upconversion luminescence of Tb3+ ions in Y2O3 nanoparticles induced by a near-infrared femtosecond laser

Visible upconversion luminescence of Tb3+ ions in Y2O3 nanoparticles induced by a near-infrared femtosecond laser

Signature of Oxide-Ion Conduction in Alkaline-Earth-Metal-Doped Y₃GaO₆

Crystal Structure and Photoluminescence of Tb³⁺ Doped Y₃GaO₆.

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Crystal structure and photoluminescence of Tb3+ doped Y3GaO6

Cited by 18 publications

References 17 publications

Visible upconversion luminescence of Tb3+ ions in Y2O3 nanoparticles induced by a near-infrared femtosecond laser

Visible upconversion luminescence of Tb3+ ions in Y2O3 nanoparticles induced by a near-infrared femtosecond laser

Signature of Oxide-Ion Conduction in Alkaline-Earth-Metal-Doped Y3GaO6