: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 :Eu particles had good crystallinity and strong red emission under ultravioletet excitation. The crystallite size increased with calcination temperature and satuarated at . 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 :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 :Eu phosphor prepared by microwave syntehsis strongly depended on the crystallite size of which an optimal size range was 50-60 nm. 섂 ?돀邰?? ??? は?? ? ?돐 ??? ?잖? ??? 뤁 ?뎀 /???? 礁 ?덐 ? ? ?? ?? ??? ??? ??? ??? 렲?? ? ??? ?? ??? ? 저 뤀 ?댐??? ?? ??? ? ??? ??? ? ? 煥??獵??? ???? ??? ??? ? ?돀邰?? ??? ??? ? ?돐 ??? ?잖? ??? ? ?댐 ??? ??? 샭?? ? ?덐 탭?? †