荧光粉NaSrB5O9:Ce3+,Pr3+,Eu3+, Tb3+的制备及结构表征

摘要

通过高温固相反应, 合成了一种硼酸盐基质NaSrB5O9, 讨论了通过调整H3BO3的含量以达到纯相.制备了系列稀土离子Ce3+、Pr3+、Eu3+、Tb3+单掺和Ce3+-Pr3+、Eu3+-Tb3+共掺于NaSrB5O9基质中的样品, 均为潜在的稀土荧光材料.NaSrB5O9中心金属Sr2+离子与8个O2-离子配位, 形成一个扭曲的十二面体.稀土离子认为取代并占据了Sr2+的格位, 在掺杂浓度范围内均保持NaSrB5O9的结构.在此, 我们详细报道了上述样品的制备方法和结构表征过程.%A ternary borate, NaSrB5O9, was synthesized in the heating processes. It was possible to make slightly excess of boric acid to compensate the B2O3 evaporation to get a pure phase. A series of Ce3+, Pr3+Eu3+ and Tb3+ activated NaSrB5O9 samples were developed by this facile solid-state reaction. NaSrB5O9 was a layered compound containing double ring B5O11 building units composed of two BO4 tetrahedra and three BO3 triangles. Due to the similarity of the effective ion radii, lanthanide ions can enter Sr2+ sites. Its preparation and crystal structure were reported.