通过共沉淀法制备了Eu和Dy包覆的纳米ZnO材料。 X射线衍射被用来测量样品的结构和粒径。 光致发光测量显示325 nm的紫外光能很好激发Eu3+的612 nm的红光发射和Dy3+的484和575 nm发射, 显示氧化锌基质与Eu3+和Dy3+之间实现了能量传递, 并对能量传递的机制进行了讨论。 在Eu和Dy共同包覆的样品中, 通过能量传递可能在紫外激发下实现白光发射。

Some kinds of phosphors were synthesized with Eu/Dy coating ZnO nanocrystals by co-precipitation approach derived from Zn(AC)2·2H2O, NaOH as precursors. The crystal structure and size were characterized by the X-ray diffraction. Photoluminescence(PL) measurements show an intense red luminescence at 612 nm caused by transition of Eu3+ ions in ZnO∶Eu3+ and intense luminescence band at 484 and 575 nm caused by transition of Dy3+ ions in ZnO∶Dy3+. The results show that the energy transfer was realized from the host to the rare earth ions. The mechanism of the energy transfer was discussed. Meanwhile Eu/Dy co-coating nano ZnO can be achieved white light emission by energy transfer.