Abstract：The nanocrystalline ZrO2∶Pr3+and ZrO2∶Pr3+,Sm3+ powders with room temperature sharp characteristic emissions were prepared by coprecipitation method. Luminescence properties of nanocrystalline ZrO2∶Pr3+ with different sintering temperatures and doping concentrations were studied. The energy transfer between the nanocrystalline ZrO2 host and the dopants was observed. The different Pr3+ concentration dependence of emission intensities of levels 3P0 and 1D2 was discussed. The dependence on Pr3+ concentration in nanocrystalline ZrO2∶Pr3+,Sm3+ of the emission intensity of 4G5/2—6H7/2 transitions of Sm3+ ions and the energy transfer between Pr3+ and Sm3+ ions were investigated and discussed.
Key words：Photoluminescence;Coprecipitation method;Nanocrystalline ZrO2∶Pr3+;ZrO2∶Pr3+;Sm3+;Energy transfer
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