Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Luminescent Properties of Y2O3:Eu Red Phosphor Particles Prepared by Microwave Synthesis

마이크로웨이브 합성법으로 제조한 Y2O3:Eu 적색 형광체의 발광 특성

  • Maniquiz, Meriel Chua (Department of Chemical Engineering, Kongju National University) ;
  • Kang, Tae-Won (Department of Chemical Engineering, Kongju National University) ;
  • Ahn, Jin-Han (Department of Chemical Engineering, Kongju National University) ;
  • Jung, Kyeong-Youl (Department of Chemical Engineering, Kongju National University)
  • Published : 2009.06.28
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Abstract

$Y_2O_3$:Eu red phosphor was prepared by microwave synthesis. The crystal phase, particle morphology, and luminescent properties were characterized by XRD, SEM, and spectrofluorometer, respectively. The prepared $Y_2O_3$:Eu particles had good crystallinity and strong red emission under ultravioletet excitation. The crystallite size increased with calcination temperature and satuarated at $1200^{\circ}C$. The primary particle size initially formed was varied from 30 to 450 nm with microwave-irradiation (MI) time. It was found that the emission intensity of $Y_2O_3$:Eu phosphor strongly depends on the MI time. In terms of the emission intensity, it was recommended that the MI time should be less than 15 min. The emission intensity of $Y_2O_3$:Eu phosphor prepared by microwave syntehsis strongly depended on the crystallite size of which an optimal size range was 50-60 nm.

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