마이크로웨이브 합성법으로 제조한 Y2O3:Eu 적색 형광체의 발광 특성
Luminescent Properties of Y2O3:Eu Red Phosphor Particles Prepared by Microwave Synthesis
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Y2O3: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 Y2O3:Eu particles had good crystallinity and strong red emission under ultravioletet excitation. The crystallite size increased with calcination temperature and satuarated at 1200℃. The primary particle size initially formed was varied from 30 to 450 ㎚ with microwave-irradiation (MI) time. It was found that the emission intensity of Y2O3: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 Y2O3:Eu phosphor prepared by microwave syntehsis strongly depended on the crystallite size of which an optimal size range was 50-60 ㎚.
Abstract
Y2O3: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 Y2O3:Eu particles had good crystallinity and strong red emission under ultravioletet excitation. The crystallite size increased with calcination temperature and satuarated at 1200℃. The primary particle size initially formed was varied from 30 to 450 ㎚ with microwave-irradiation (MI) time. It was found that the emission intensity of Y2O3: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 Y2O3:Eu phosphor prepared by microwave syntehsis strongly depended on the crystallite size of which an optimal size range was 50-60 ㎚.
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