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김봉성,이민지,Takesi Abe,TAKAKI MASAKI,송영현,Kenji Toda,윤대호 한양대학교 세라믹연구소 2016 Journal of Ceramic Processing Research Vol.17 No.4
BaAl2Si2O8: Eu2+ + xSiO2 (x = 0, 1, 2 and 3) has been synthesized with phosphors via novel liquid phase precursor (LPP)method. The best crystalline BaAl2Si2O8 : Eu2+ phosphor could not be synthesized as the calcination temperature is inadequatefully to crystalize the phosphor leading to the crystal and amorphous. Albeit, the firing temperature is insufficient so as to formthe fine crystal, the added excess SiO2 could act as an additive for the crystallization of the phosphor. As a function of SiO2,the size of the crystal has been augmented and formed fine crystals with the concentration of added SiO2. Moreover, the addedexcess SiO2 makes SiOC : Eu2+ phosphor as a deep blue illumination at 440 nm. Photoluminescence intensity of the phosphorsis increased continuously by the addition of SiO2 heretofore x = 3. In the present investigation, an attempt has been made tosynthesize and observe carefully for photoluminescence properties with regard to the crystalline structure, optical propertyand surface morphology.