Synthesis and photoluminescence of Eu-doped Y2Sn2O7 nanocrystals |
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Authors: | Zhouguang Lu Junwei Wang Yadong Li |
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Institution: | a Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of Chinab Collage of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, People's Republic of China |
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Abstract: | A facile CTAB-assisted sol-gel route has been successfully established to synthesize Y2Sn2O7 nanocrystals with pyrochlore structure. The route involves first the formation of CTAB-inorganics mesostructures as precursors and then their thermal decomposition to yield the final product. Well-crystallized and phase-pure Y2Sn2O7 particles of ∼40 nm in size can be readily obtained at 600°C, a temperature much lower than that of the conventional solid-state method. Furthermore, photoluminescence characterization of the Y2Sn2O7 nanocrystals doped with 5 mol% Eu3+ was carried out and the results show that the as-synthesized material display intense and prevailing emission at 589 nm belonging to the magnetic dipole transition. |
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Keywords: | Yttrium stannate Europium Pyrochlore Nanocrystals CTAB-assisted sol-gel Photoluminescence |
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