کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1523535 | 1511830 | 2011 | 4 صفحه PDF | دانلود رایگان |
Synthesis and luminescence properties of Eu3+ and Tm3+-doped ZnNb2O6 nanocrystals by the sol–gel process were investigated. The products were characterized by differential thermal analysis (DTA), scanning electron microscopy (SEM), and photoluminescence spectroscopy (PL). ZnNb2O6:Eu3+ shows bright red luminescence with maximum peak at 613 nm attributed to 5D0 → 7F2 transition. The major blue emission peak of ZnNb2O6:Tm3+ was at 483 nm, corresponding to the transitions 1G4 → 3H6. The optimum concentration of Eu3+ and Tm3+ showing the maximum PL intensity was 4 mol% and 1 mol%, respectively.
► To our knowledge, Eu and Tm-doped ZnNb2O6 nanocrystals have not been thoroughly investigated yet, which was the motivation for this research.
► We have successfully synthesized a series of Eu3+ and Tm3+-activated ZnNb2O6 nanocrystals by the sol–gel method at a low temperature.
► ZnNb2O6:Eu3+ shows bright red luminescence with maximum peak at 613 nm attributed to 5D0 → 7F2 transition.
► The major blue emission peak of ZnNb2O6:Tm3+ was at 483 nm, corresponding to the transitions 1G4 → 3H6.
Journal: Materials Chemistry and Physics - Volume 130, Issue 3, 1 November 2011, Pages 1187–1190