In this work, the photoluminescence (PL) of NaScP2O7:Eu2+ and NaScP2O7:Eu2+,Mn2+ was investigated. Phase purity was checked using X-ray powder diffractometry (XRD). PL excitation and emission spectra were recorded to elucidate the PL properties of NaScP2O7:Eu2+ and NaScP2O7:Eu2+,Mn2+. Furthermore, fluorescence lifetime measurements were performed. PL and lifetime measurements were carried out from 10 to 525 K. Moreover, the Eu2+ site occupation was discussed. It turned out that the incorpo-rated Eu2+ ions substituted for Na+ site and occupied two different sites. Temperature dependent PL measurements indicated the emis-sion intensity decreased with increasing temperature due to temperature quenching in NaScP2O7:Eu2+. Fluorescence lifetimes of Eu2+ in NaScP2O7:Eu2+ almost did not change with a decay constantτ=~0.53μs in the temperature range of 10–280 K, and then shortened due to temperature quenching. The luminescent lifetime reached ~0.05μs atT=525 K. Finally, it was found that energy transfer oc-curred from Eu2+ to Mn2+ in co-doped NaScP2O7:Eu2+,Mn2+.
参考文献
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%