The experiment results show that the prepared YPO4 : Tb is about 40 nm. As a result the method of copricipation is a better way to prepare Nanostructured particles. The luminescence spectra of nanosized YPO4: Tb shows that it emits bright green.

• 实验结果表明合成的YPO4:Tb粒径大约为40nm左右；并且从其发射光谱中可以看出合成的纳米级YPO4:Tb有明亮的绿光发射.