A series of Bi³⁺ ion doped Ln₂O₃ (Ln = Lu, Gd, La) phosphors have been prepared through a simple urea-based precipitation method. The ¹S₀ → ³P₁ transition position shift of Bi³⁺ ion has been investigated in Bi³⁺-doped Ln₂O₃ phosphors. This is caused by difference of covalency and coordination number. The ¹S₀ → ³P₁ transition of Bi³⁺ ion in Gd₂O₃ crystal shifts to lower energy position than that in Lu₂O₃ crystal for the same site due to the larger radius of Gd³⁺ ion compared to Lu³⁺ ion. However, the ¹S₀ → ³P₁ transition of Bi³⁺ ion shifts to higher energy position owing to the increase of coordination number from cubic phase Lu₂O₃ and Gd₂O₃ crystals to hexagonal phase La₂O₃ crystal. Our work provides a reference to achieve various photoluminesence performances of Bi³⁺ ion doped oxides.

通过简单的基于尿素的沉淀法制备了一系列Bi ³⁺离子掺杂的Ln ₂ O ₃（Ln = Lu，Gd，La）荧光粉。在Bi ³⁺掺杂的Ln ₂ O ₃荧光粉中研究了Bi ³⁺离子的¹ S ₀ → ³ P ₁跃迁位置偏移。这是由于共价和配位数的不同引起的。Gd ₂ O ₃中Bi ³⁺离子的¹ S ₀ → ³ P ₁跃迁由于与Lu ³⁺离子相比，Gd ³⁺离子的半径更大，所以同一位置的晶体移至比Lu ₂ O ₃晶体的能量位置低的位置。然而，由于从立方相Lu ₂ O ₃和Gd ₂ O ₃晶体到六方相La ₂ O ₃晶体的配位数增加，Bi ³⁺离子的¹ S ₀ → ³ P ₁跃迁转移到更高的能量位置。我们的工作为实现Bi ^3+的各种光致发光性能提供参考。 离子掺杂的氧化物。