Citation: WANG Zan, MI Xiao-Yun, XIE Ling-Jie, PAN Xiao-Ying, ZHOU Hong-Yan, CHEN Shu-Yi, ZHANG Xi-Yan, BAI Zhao-Hui. Preparation and Luminescent Properties of Ca9Y(PO4)7: Ce3+,Tb3+ Nano-phosphors[J]. Chinese Journal of Inorganic Chemistry, ;2016, 32(12): 2136-2142. doi: 10.11862/CJIC.2016.284
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Ca9Y(PO4)7:Ce3+,Tb3+ nano-phosphors were synthesized by hydrothermal method. X-ray diffraction (XRD), Scanning electron microscope (SEM) and Photoluminescence (PL) spectra and so on were used to characterize the samples. The effects of Ce3+ and Tb3+ on the luminescence properties of Ca9Y(PO4)7:Ce3+,Tb3+ was studied in detail. The result indicates that the luminescence color of Ca9Y(PO4)7:Tb3+ can be tuned through adjusting the concentration of Tb3+, which is attributed to the energy cross relaxation of Tb3+. And the energy transfer mechanism of Ce3+-Tb3+ was dipole-quadrupole mechanism of electric multipole interactional, the biggest energy transfer efficiency was 55.6%. The emission color of Ca9Y(PO4)7:Ce3+,Tb3+ can be tuned by the energy transfer of ions and the total emission of activators. SEM showed that the samples had good dispersion, and the particle size of phosphors was about 100 nm.
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