Abstract
Red long-lasting phosphor Y2O2S:Eu3+, Zn2+, Ti4+ nanotubes were prepared by hydrothermal method. Powder X-ray diffraction (XRD), scanning electron microscopy (SEM), photoluminescence and thermoluminescence spectra (TL) were used to characterize the long-lasting phosphor. XRD investigation revealed that the product synthesised under 750 °C for 6 h was a pure phase of Y2O2S. SEM observation showed that the sulfuretted phosphor inherited the tube-like shape from the precursor. Under 325 nm UV excitation, the result indicated the strongest red-emission lines at 627 nm, corresponded to the transition from 5D0 to 7F2 level of Eu3+ ion. Both the afterglow decay curves and TL curves revealed that the phosphor had efficient luminescent and excellent long-lasting properties.
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Acknowledgments
This present work was financially supported by the National Natural Science Foundation of China (No. 51072128), Key Research Project of Science and Technology of Shanxi (No. 20110321040-01) and Program for the Top Young Academic Leaders of Higher Learning Institutions of Shanxi.
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Huang, P., Liu, D., Cui, C.E. et al. Synthesis and luminescence properties of red long-lasting phosphor Y2O2S:Eu3+, Zn2+, Ti4+ nanotubes via hydrothermal method. Appl. Phys. A 116, 759–765 (2014). https://doi.org/10.1007/s00339-013-8145-x
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DOI: https://doi.org/10.1007/s00339-013-8145-x