Synthesis and photoluminescence characteristics of SrAl2O4:Mn⁴⁺ phosphor for LED applications (LED용 SrAl₂O₄:Mn⁴⁺ 형광체 합성 및 발광특성 연구)

Choi ByoungSu (최병수); Jun Ho Lee (이준호); Sungu Hwang (황승구); Jin Kon Kim (김진곤); BYEONG WOO LEE (이병우); Hyun Cho (조현)

doi:10.6111/JKCGCT.2023.33.1.001

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, Hyun Cho 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.

KEYWORDS

SrAl2O4:Mn4+ phosphor, Solid-state reaction, Photoluminescence characteristics, Deep red emission

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