Tb 3+ 和 Yb 3+ codoped LuPO 4 黄磷被反向罢工的一起沉淀方法准备。获得的 LuPO 4:Tb3+,Yb3+ 黄磷被 X 光检查衍射(XRD ) 描绘,理解切的在红外线附近的量(质量管理) 的光致发光(PL ) 系列和腐烂动力学现象。XRD 结果证明所有黄磷展出了好 crystallinity 并且有 LuPO 4 的一个纯四角形的阶段。试验性的结果证明在从 Tb 3+ 的 545 nm 附近的强壮的绿排放(5 D 47 F 5) 并且在红外线附近(NIR ) 在从 Yb 3+ 的 1003 nm 的排放(2 F 5/22 LuPO 4:Tb3+,Yb3+ 黄磷的 F 7/2) 分别地在 489 nm 刺激下面被观察。两个的光性质和一生上的 Yb 3+ 集中依赖可见并且 NIR 排出物也被调查。Yb 3+ 离子的熄灭的集中象 10 mol.% 一样高来临了。LuPO 4:Tb3+,Yb3+ 的优秀的光性质显示它在改进硅的精力变换 eficiency 的潜在的申请由把一个蓝光子变换成二 NIR 基于太阳能电池。
Tb~(3+) and Yb~(3+) codoped LuPO_4 phosphors were prepared by the reverse-strike co-precipitation method.The obtained LuPO_4:Tb~(3+),Yb~(3+) phosphors were characterized by X-ray diffraction(XRD),photoluminescence(PL) spectra and decay kinetics to understand the near-infrared quantum cutting(QC) phenomena.The XRD results showed that all the phosphors exhibited good crystallinity and had a pure tetragonal phase of LuPO_4.The experimental results showed that the strong green emission around 545 nm from Tb~(3+)(~5D_4→~7F_5) and near-infrared(NIR) emission at 1003 nm from Yb~(3+)(~2F_(5/2)→~2F_(7/2)) of LuPO_4:Tb~(3+),Yb~(3+)phosphors were observed under 489 nm excitation,respectively.The Yb~(3+) concentration dependence on luminescent properties and lifetimes of both the visible and NIR emissions were also investigated.The quenching concentration of Yb~(3+) ions approached as high as 10 mol.%.The excellent luminescence properties of the LuPO_4:Tb~(3+),Yb~(3+) indicated its potential application in improving the energy conversion efficiency of the silicon based solar cells by converting one blue photon to two NIR ones.