本文采用均相沉淀法制备纳米Y2O3:Eu3+，并控制反应条件，得到不同粒径的微粉，与非纳米粉体相比．纳米Y2O3：Eu3+的X－ray衍射粉变宽，2θ角增大，同时发射光谱存在蓝移现象，谱峰波长及强度与粒径有密切联系．
Nano-Y2O3:Eu3+ was prepared with the method of homogeneous precipitation. Controlling theconditions of the reaction, we obtained nano-scale powders with different grain sizes. Compared to ordinarypowders of Y2O3:Eu3+, the XRD peaks of nan-Y2O3:Eu3+ become wide, and 2θ increases. Also, it exitsthe bluc-shift in the X-ray PLS of nano-Y2O3:Eu3+.The wave length and intensity of the peak(5Do →7F2)are connected with the grain size of the powders.
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