Eu-Doped CaAl2Si2O8 Nanocrystalline Phosphors Crystallized from the CaO – Al2O3 – SiO2 Glass System
作者： Takeshi Ohgaki , Akihisa Higashida , Kohei Soga , Atsuo Yasumori
DOI: 10.1149/1.2712834
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摘要: A new process to synthesis Eu-doped CaAl 2 Si O 8 (CaAl :Eu) nanocrystals coated with SiO is proposed. In this process, :Eu were precipitated in a -rich matrix through phase separation and crystallization. CaO-Al 3 -SiO system glasses, composition of (x - 1)SiO -(100 x)CaAl 4 -1Si mol % the immiscibility region, prepared by conventional melt-quenching process. They heat-treated for crystallization precipitate crystals into separated glass. We succeeded obtaining matrix, composed glass α-cristobalite phase. These glasses ceramics show blue luminous properties due 4f 7 -4f 6 5d 1 transition Eu 2+ ions. The blue-emission intensity containing significantly depended on heat-treatment time
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