ブラックライト照射により発光するセリウム(III)及びテルビウム(III)共付活バテライト蛍光体の合成とその蛍光特性

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This paper reports about synthesis and fluorescence properties of Ce (III) and Tb (III) codoped vaterite phosphor emitting by black light irradiation. Ce_<3+> and Tb_<3+> codoped vaterite was synthesized by a liquid phase reaction by adding 0.1 mol・dm^<-3> (NH_4)_2CO_3 solution into 0.10 mol・dm^<-3> CaCl_2 solution including CeCl_3 and TbCl_3 at 35℃. The formation ratio of vaterite included Tb^<3+> increased by adding glutamine. The emission wavelengths of the vaterite phosphor excited with 275 nm light were 490, 545 and 580 nm. However, the emission intensity of 545 nm by codoping Ce^<3+> and Tb^<3+> into vaterite host increased by 50 times. Emission of Ce^<3+> and Tb^<3+> codoped vaterite phosphor observed at about 545 nm and the emitted color was green. The largest emission was observed in the vaterite phosphor prepared by synthetic conditions with a (Ce+Tb)/Ca atomic ratio 0.04 (Ce/Ca atomic ratio: 0.02, Tb/Ca atomic ratio 0.02).
社団法人日本セラミックス協会の論文
2002-08-01