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Influence of ionic size of modifier cations on photoluminescence property in La₂O₃-Al₂O₃ and Y₂O₃-Al₂O₃ binary aluminate glasses

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2025, 35(2), pp.49~54
  • DOI : 10.6111/JKCGCT.2025.35.2.049
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering
  • Received : April 1, 2025
  • Accepted : May 7, 2025
  • Published : June 30, 2025

Minsung Hwang 1 Jaeyeop Chung 1

1한국세라믹기술원

Accredited

ABSTRACT

Eu2O3 and Er2O3 doped La₂O₃–Al₂O₃ and Y₂O₃–Al₂O₃ glass systems were successfully synthesized by containerless processing. Photoluminescence (PL) analysis revealed that Eu₂O₃-doped glasses exhibited the highest emission intensity at 1 mol%, with a decrease at higher concentrations (1.5 mol% and 2 mol%) due to concentration quenching. Similarly, Er₂O₃ doping resulted in reduced PL intensity beyond 1 mol%, with Er2O3-Y2O3-Al2O3 glasses exhibiting weaker quenching effects than Er2O3-La2O3-Al2O3 due to differences in ionic radii. Additionally, Eu³⁺-doped glasses showed lower resistance to quenching compared to Er³⁺-doped glasses. These results demonstrate the successful synthesis of new aluminate glass compositions with tunable luminescent properties, offering potential applications in fluorescent glass materials.

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