Synthesis and luminescence properties of red long-lasting phosphor Y2O2S:Eu3+, Zn2+, Ti4+ nanotubes via hydrothermal method |
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Authors: | Ping Huang Dan Liu Cai E. Cui Lei Wang Guowei Jiang |
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Affiliation: | 1. College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan, 030024, China 2. Observation and Control Technology Research Institute, Taiyuan University of Technology, Taiyuan, 030024, China
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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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