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http://dx.doi.org/10.4150/KPMI.2009.16.3.203

Luminescent Properties of Y2O3:Eu Red Phosphor Particles Prepared by Microwave Synthesis  

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)
Publication Information
Journal of Powder Materials / v.16, no.3, 2009 , pp. 203-208 More about this Journal
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.
Keywords
Phosphor; Microwave; Luminescence; $Y_2O_3$;
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