结构稳定的高质量荧光材料CaAl_4O_7:Tb^(3+),Ce^(3+)

Stable High Quality Luminescent Material CaAl_4O_7:Tb^(3+),Ce^(3+)

在本文中制作了CaAl4 O7:Tb3+,Ce3+新荧光材料。烧结温度为 130 0℃ ,烧结环境为N2 + 5 %H2还原气。TEM实验结果表明样品的粒度小于 1μm。X 射线和HRTEM实验证实 ,样品的晶格点阵十分规则 ,而且没有发现掺杂和助溶剂对基质结构的影响 ,表现出十分好的材料质量。光学实验观测到对应于Tb3+离子的 5D4 到7FJ(J=6 ,5 ,4,3) 的跃迁发射峰在 485 ,5 45 ,5 90和 6 2 0nm。CaAl4 O7:Tb3+,Ce3 +降低了基质结构的不确定性 ,同时保持了Tb3+发光中心的特性。

We had made CaAl4O7:Tb3+,C3+ samples by sintering the sample at 1 300 degreesC in reduction environment N-2 + 50% H-2. Emission lines corresponding to the D-3(4) to F-7(J) (J = 6, 5, 4, 3) optical transitions of the Tb3+ ions were observed at 485, 545, 590 and 620 nm respectively. The particle size of the sample was controlled to less that 1 mum. The lattice of the sample was rather regular in atomic scale and showed very good quality. CaA(4)O(7):Tb3+,Ce3+ materials can reduce structure uncertainty of the host and remain typical optical properties of the Tb3+ emitting center.