Occupation site of Pr and luminescent properties in Pr-doped perovskite-type lithium ion-conducting ozides,A0.6Li0.3Ti0.5Ta0.5O3: Pr (A = Ca and Sr)

摘要：

We investigated the lattice parameters and luminescent properties of Pr-doped perovskite-type lithium ion conductors with the nominal composition,A0.6-3x/2PrxLi0.3Ti0.5Ta0.5O3(A=Ca and Sr, 0 ≤ x ≤ 0.05). Ca0.6Li0.3Ti0.5Ta0.5O3: Pr showed the intense red emission corresponding to the f-f transition of Pr3+(1D2→3H4) on the ultraviolet photo excitation with the energy corresponding to the band gap of host. In contrast, Sr0.6Li0.3Ti0.5Ta0.5O3: Pr exhibited blue-green and red emission on the excitation with blue light corresponding to the f-f transition of Pr3+(3H4→3P2). It was found that these differences in luminescent properties primarily originate from the occupation site of Pr in these perovskite-type oxides.

关键词： Luminescence Praseodymium Perovskite Band gap Lithium ion-conductor

作者: Yoshiyuki Inaguma Mami Okamoto Takeshi Tsuchiya Tetsuhiro Katsumata

作者单位: Department of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo, 171-8588 Japan

会议类型: 国际会议

会议名称: The 16th International Conference on Solid State Ionics(第十六届国际固态离子学会议)

会议地点: 上海

会议语种:英文

页码: 788-792

在线出版日期: 2007-07-01（万方平台首次上网日期，不代表论文的发表时间）