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<p>In this study, red-emitting Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>:Eu<sup>3+</sup> phosphor was successfully synthesized using a solution-combustion method. The structural characterization through XRD confirmed the formation of a well-crystallized Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub> structure. SEM images revealed the formation of an agglomerate structure, while FTIR spectra identified the chemical bonds present in the phosphor. EDS further confirmed the presence of the expected elements in the composition. PL spectra exhibited characteristic emission peaks at 592&#xa0;nm, 615&#xa0;nm, and 628&#xa0;nm, corresponding to transitions from the <sup>5</sup>D<sub>0</sub>→<sup>7</sup>F<sub>1</sub>, <sup>5</sup>D<sub>0</sub>→<sup>7</sup>F<sub>2</sub> and <sup>5</sup>D<sub>0</sub>→<sup>7</sup>F<sub>3</sub>, respectively, with the maximum emission observed at 615&#xa0;nm. The luminescence intensity was found to increase with increasing Eu<sup>3+</sup> doping concentrations up to 0.8%, after which a concentration quenching effect occurred, leading to a decrease in emission intensity at higher doping levels (1.2%). These findings demonstrate the potential of Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>:Eu<sup>3+</sup> as an efficient red-emitting phosphor and underscore the importance of optimizing doping concentrations for enhanced luminescent performance.</p>

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Effect of Europium Doping on the Structural, Morphological, and Luminescent Properties of Y3Al5O12 Phosphors Produced by Combustion Method

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年4月24日

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  • Fikadu Takele Geldasa,
  • Habtamu Fekadu Etefa,
  • Francis Birhanu Dejene

摘要

In this study, red-emitting Y3Al5O12:Eu3+ phosphor was successfully synthesized using a solution-combustion method. The structural characterization through XRD confirmed the formation of a well-crystallized Y3Al5O12 structure. SEM images revealed the formation of an agglomerate structure, while FTIR spectra identified the chemical bonds present in the phosphor. EDS further confirmed the presence of the expected elements in the composition. PL spectra exhibited characteristic emission peaks at 592 nm, 615 nm, and 628 nm, corresponding to transitions from the 5D0→7F1, 5D0→7F2 and 5D0→7F3, respectively, with the maximum emission observed at 615 nm. The luminescence intensity was found to increase with increasing Eu3+ doping concentrations up to 0.8%, after which a concentration quenching effect occurred, leading to a decrease in emission intensity at higher doping levels (1.2%). These findings demonstrate the potential of Y3Al5O12:Eu3+ as an efficient red-emitting phosphor and underscore the importance of optimizing doping concentrations for enhanced luminescent performance.