Correlation of morphology and photoluminescence properties of gehlenite: Eu glassy phosphors

Shih, Shao‐Ju; Lin, Yueqiang; Lin, Shih-Heng; Yu, Chin‐Yang

doi:10.1111/ijac.12616

Cited by 6 publications

(4 citation statements)

References 20 publications

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“…In this study, the Type II particles had more porosity than Type I particles, and therefore, Type II particles (836 nm) exhibited the larger particle size than that of Type I particles (713 nm). A similar result has been reported in our previous study [22].…”

Section: Discussionsupporting

confidence: 93%

Morphology Evolution of Mg2SiO4 Particles Synthesized by Spray Pyrolysis from Precursor Solution

et al. 2023

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Forsterite (Mg2SiO4) materials have been used in the industrial applications of refractory materials, bone grafting materials, and microwave dielectric materials. In order to avoid the formation of the secondary phase of MgO or MgSiO3, spray pyrolysis with the precursors of magnesium nitrate hydrate and tetraethyl orthosilicate has been applied to synthesized Mg2SiO4 powders. In this study, three typical morphologies of smooth solid sphere, rough hollow sphere, and concaved hollow sphere were observed using scanning electron microscopy and transmission electron microscopy. The experimental results suggested that morphology and particle size distribution are strongly influenced by the calcination temperature. Finally, the corresponding powder formation mechanisms were proposed and discussed.

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Section: Discussionsupporting

confidence: 93%

Morphology Evolution of Mg2SiO4 Particles Synthesized by Spray Pyrolysis from Precursor Solution

et al. 2023

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“…In the previous work, there are few reports on gehlenite (Ca 2 Al 2 SiO 7 ) doped Eu phosphors using spray pyrolysis method [19]. e obtained result was amorphous phase and the result showed that red mission was obtained.…”

Section: Introductionmentioning

confidence: 96%

Investigation of Annealing and Crystallite Size on the Photoluminescence Properties of Ca2Al2SiO7: Eu Phosphors Prepared by Spray Pyrolysis

Bakare

Aga

Hirpho

et al. 2022

Advances in Materials Science and Engineering

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Crystalline gehlenite (Ca2Al2SiO7) phosphor, doped with Eu ions, was successfully synthesized by the spray pyrolysis method followed by annealing temperature. The crystallite size and photoluminescence characterization were investigated as function of the annealing temperature. The X-ray diffraction pattern indicates that all peaks could be ascribed to the tetragonal Ca2Al2SiO7 phase in which the dopant could not affect the crystal structures. All annealed powders emitted red luminescence at 613 nm under excitation of 394 nm. However, at 1300°C annealing temperature for Ca2Al2SiO7 doped with Eu ions, the maximum photo luminescent intensity has been obtained.

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“…The SP method has been used to circumvent these issues [24,27]. Compared with the aforementioned techniques, SP offers several advantages, including less contamination [24], compatibility with the continuous process [28], fast processing time (∼1 h) [27], and morphological flexibility [29,30]. Furthermore, several high-purity micron-sized phosphor materials of various morphology were successfully synthesized using this method.…”

Section: Introductionmentioning

confidence: 99%

“…Yttrium borates and yttrium oxide series with unique hexagonal YBO 3 and cubic oxide phases were prepared by SP, contributing to efficient luminescence and a prolonged decay time [29]. In addition, we successfully prepared solid, hollow, and porous Eu-doped gehlenite using SP [27] and demonstrated its superior photoluminescence (PL) properties [30]. Therefore, this study attempts to prepare a green phosphor with a narrow wavelength range by SP.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Characterization of Narrow-Wavelength Phosphors of Tb-Doped Yttrium-Silicon-Aluminum Oxynitride Using Spray Pyrolysis

Aji,

Huang,

Oishi

et al. 2023

Ceramics

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Selective emission of green light phosphor powder Y4SiAlO8N as the host material and Tb3+ as the activator was successfully achieved using spray pyrolysis (SP). Samples synthesized with various calcination temperatures and precursor concentrations indicated that the most suitable parameter for the synthesized powder is the calcination of 0.05 M Y3.92SiAlO8N:0.08Tb3+ at a temperature of 1600 °C. The effect of the selected parameters was substantiated by the high purity of the Y3.92SiAlO8N:0.08Tb3+ phase, as confirmed by X-ray diffraction (XRD) analysis. The Scherrer equation was used to calculate grain size. In addition, scanning electron microscopy (SEM) and energy-dispersive X-ray spectrometry (EDS) confirmed the presence of micron-sized particles, which matched well with the theoretical chemical composition. The specific surface area of the phosphor powder was determined using the Brunauer–Emmett–Teller method. Finally, fluorescence spectrometry was used to determine the luminescence properties. The correlation between the crystallinity of the phosphor powder and narrowing emission is also discussed.

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Correlation of morphology and photoluminescence properties of gehlenite: Eu glassy phosphors

Cited by 6 publications

References 20 publications

Morphology Evolution of Mg2SiO4 Particles Synthesized by Spray Pyrolysis from Precursor Solution

Morphology Evolution of Mg2SiO4 Particles Synthesized by Spray Pyrolysis from Precursor Solution

Investigation of Annealing and Crystallite Size on the Photoluminescence Properties of Ca2Al2SiO7: Eu Phosphors Prepared by Spray Pyrolysis

Fabrication and Characterization of Narrow-Wavelength Phosphors of Tb-Doped Yttrium-Silicon-Aluminum Oxynitride Using Spray Pyrolysis

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