The luminescent properties of Pr³⁺ ion-doped t-type LaVO₄ phosphor synthesized by the hydrothermal method were investigated. The XRD results shows that the optimum conditions for preparing t-type LaVO₄ are 180 ^oC, 16 h. These particles are homogeneous distribution with uniform particle sizes for various Pr³⁺ ion concentrations, but the particle sizes seem to be increased with increasing Pr³⁺ ion contents. For Pr³⁺ ion-doped m-type and t-type LaVO₄ phosphor, the absorption and excitation behavior are almost the same, but there is an obviously difference for emission behavior. The main emission peak is from the ¹D₂→³H₄ transition for Pr³⁺ ion-doped t-type LaVO₄ phosphor. The Commission International de I’Edairage chromaticity coordinates shifted from blue region to white region, and then shift to light-blue region. A single white light emitting phosphor can be obtained if the Pr³⁺ ion concentration is appropriate.

研究了水热法合成的Pr ³⁺离子掺杂t型LaVO ₄荧光粉的发光性能。XRD结果表明，制备t型LaVO ₄的最佳条件是180 ^o C，16 h。对于不同的Pr ³⁺离子浓度，这些颗粒具有均匀的粒径分布，但粒径似乎随着Pr ³⁺离子含量的增加而增加。对于Pr ³⁺离子掺杂的m型和t型LaVO ₄荧光粉，吸收和激发行为几乎相同，但发射行为存在明显差异。主要发射峰来自¹Pr ³⁺离子掺杂的t型LaVO ₄磷光体的D ₂ → ³ H ₄跃迁。Commission International de I'Edairage 色度坐标从蓝色区域转移到白色区域，然后转移到浅蓝色区域。如果Pr ³⁺离子浓度合适，可以获得单一的白色发光磷光体。