Er~(3+)-Yb~(3+)共掺杂ZrO_2-TiO_2粉末的上转换发光性质
Er~(3+)-Yb~(3+)공참잡ZrO_2-TiO_2분말적상전환발광성질
Upconversion Luminescence Properties of Er~(3+)-Yb~(3+)Co-doped Titania-zirconia Powders
  • 万方数据
    化学世界 화학세계
    CHEMICAL WORLD
    2010年 2期 65-67,78 ,共4页

    胡迎飞%王德强%李志进%卢俊杰%郑金标

    호영비%왕덕강%리지진%로준걸%정금표

    上转换发光%ZrO_2-TiO_2%Er~(3+)-Yb~(3+)%共沉淀 上轉換髮光%ZrO_2-TiO_2%Er~(3+)-Yb~(3+)%共沉澱
    상전환발광%ZrO_2-TiO_2%Er~(3+)-Yb~(3+)%공침정
    upconversion luminescence s titania-zirconia%Er~(3+)-Yb~(3+)%co-precipitation
    通过共沉淀方法制备了Er~(3+)和Yb~(3+)共掺的ZrO_2-TiO_2上转换发光材料.用X射线衍射(XRD)对合成的物相结构进行了检测,并对样品在980 nm激光激发下的上转换发光性质进行了研究.观察到了位于528、550和662 nm附近的绿色和红色发光,分别对应于Er~(3+)离子的~2H_(11/2),~4S_(2/3)→~4I_(15/2) and ~4F_(9/2)→~4I_(15/2)跃迁.样品的红光和绿光强度随着ZrO_2和TiO_2配比的变化而变化.随着烧结温度的升高,样品整体发光强度增加.讨论了上转换发光可能的机理:激发态吸收(ESA)和能量传递上转换(ET)过程.
    통과공침정방법제비료Er~(3+)화Yb~(3+)공참적ZrO_2-TiO_2상전환발광재료.용X사선연사(XRD)대합성적물상결구진행료검측,병대양품재980 nm격광격발하적상전환발광성질진행료연구.관찰도료위우528、550화662 nm부근적록색화홍색발광,분별대응우Er~(3+)리자적~2H_(11/2),~4S_(2/3)→~4I_(15/2) and ~4F_(9/2)→~4I_(15/2)약천.양품적홍광화록광강도수착ZrO_2화TiO_2배비적변화이변화.수착소결온도적승고,양품정체발광강도증가.토론료상전환발광가능적궤리:격발태흡수(ESA)화능량전체상전환(ET)과정.
    Er~(3+)-Yb~(3+) co-doped titania-zirconia composites were synthesized by a co-precipitation method.Their structures and up-conversion luminescent properties were investigated by using X-ray diffraction and photoluminescence spectra under 980 nm laser excitation.The strong green and.red up-conversion emissions,attributed ~2H_(11/2),~4S_(2/3)→~4I_(15/2) and ~4F_(9/2)→~4I_(15/2) transitions of Er~(3+) ion respectively,were observed.The ratio of green to red emission changed with the variation of host composition.The possible mechanism of up-converting emission,excited-state absorption(ESA)and energy transfer up-converting (ET)process were discussed.
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