用 BPO4 和稀土氧化物为原料 ,首次合成了铈、铽、钆共激活的硼磷酸钇绿色荧光粉 ,研究了基质中Ce3+ 、Tb3+ 、Gd3+ 的发光以及它们之间的相互作用。该基质中存在 Ce3+ → Tb3+ 、Gd3+ → Tb3+ 的能量传递 ,以及 Ce3+和 Gd3+ 之间的竞争吸收和独自发射。在铈、铽共激活的硼磷酸钇体系中掺入钆后 ,Ce3+ 的发射以及 Tb3+ 的 5D4 → 7FJ和 5D3→ 7FJ的发射均增强 ,但总的效果是 Gd3+ 阻碍了 Ce3+ → Tb3+ 的能量传递。基质中钇全部被钆代替后 ,荧光粉的发光亮度增加 ,光纯度也较好 ,发光色坐标 X值稍变小。 Using BPO4 and rare earth oxides as raw materials, we synthesized the green phosphor YbO3 co-activated with cerium, terbium and gadolinium for the first time and studied the luminescence of Ce3 +, Tb3 + and Gd3 + in the matrix and their interaction. The matrix has the energy transfer of Ce3 + → Tb3 +, Gd3 + → Tb3 +, as well as the competitive absorption and emission of Ce3 + and Gd3 + alone. The emission of Ce3 + and the emission of 5D4 → 7FJ and 5D3 → 7FJ of Tb3 + are enhanced by the incorporation of gadolinium into cerium and terbium co-activated yttrium borophosphate systems. However, the overall effect is that Gd3 + hinders the energy transfer of Ce3 + → Tb3 +. Substrate yttrium were all replaced by gadolinium, the phosphor luminescence brightness increases, the optical purity is better, the color coordinates X value slightly smaller.