Facile synthesis, formation mechanism and tunable upconversion luminescence of nanocrystals co-doped by Yb3+/Tm3+
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文摘
UCNPs (GdF3, YF3, NaGdF4 and NaYF4) co-doped by Yb3+/Tm3+ had been synthesized at 150 °C. The growth process and upconversion mechanism of UCNPs had been deduced by schematic diagram. The accumulation and energy transfer of Gd3+ could be demonstrated in the polycrystalline host.
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