【摘 要】
：
Micro-and nanocrystals cubic-phase SrF2:Yb3+/Er3+ upconversion luminescence phosphors were synthesized via a facile hydrothermal route in the presence of differ
【机 构】
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College of Chemistry and Environmental Engineering
论文部分内容阅读
Micro-and nanocrystals cubic-phase SrF2:Yb3+/Er3+ upconversion luminescence phosphors were synthesized via a facile hydrothermal route in the presence of different surfactants. The samples were characterized with X-ray diffraction(XRD), Fourier transform infrared spectra (FT-IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and upconversion emission spectra.As-prepared products showed a variety of morphologies, such as cubic-shaped microcrystal, hierarchical structure microspheres,spherical-shaped nanocrystals and nanosheets.The intrinsic structural feature of cubic-phase SrF2 and two important external factors, namely,the mechanisms for products with various architectures were presented. A systematic study on the photoluminescence of Yb3+/Er3+-doped SrF2 samples with cubic shape, microspheres, spherical and nanosheets shapes showed that the optical properties of these products were strongly dependent on their morphologies and size.
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