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Synthesis and photoluminescence characteristics of SrAl2O4:Mn⁴⁺ phosphor for LED applications

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2023, 33(1), pp.1-6
  • DOI : 10.6111/JKCGCT.2023.33.1.001
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering
  • Received : January 19, 2023
  • Accepted : February 13, 2023
  • Published : February 28, 2023

Choi ByoungSu 1 Jun Ho Lee 2 Sungu Hwang 2 Jin-Kon Kim 1 BYEONG WOO LEE 3 Cho, Hyun 1

1부산대학교
2부산대학교 메카트로닉스공학과
3한국해양대학교

Accredited

ABSTRACT

A non-rare earth-based strontium-aluminate red light emitting phosphor was synthesized by a solid-state reaction method and the effect of synthesis temperature and Mn4+ activator concentration on the photoluminescence characteristics of the phosphor was studied. The synthesized SrAl2O4:Mn4+ phosphor showed broad band absorption characteristics in the near-ultraviolet and blue regions with peaks at wavelengths of near 330 and 460 nm, and a triple band deep red emission consisted of three peaks at near 644, 658, and 673 nm. The SrAl2O4:Mn4+ phosphor synthesized at a temperature 1600°C and a Mn4+ activator concentration of 0.5 mol% showed the strongest PL emission intensity, and concentration quenching was observed at concentrations higher than 0.7 mol%. FE-SEM and DLS particle size distribution analysis showed that the synthesized SrAl2O4:Mn4+ phosphor had a particle size distribution of 2~6.4 µm and an irregular spherical shape with an average particle size of ~4 µm.

Citation status

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