| Er~(3+)-Yb~(3+)共掺杂ZrO_2-TiO_2粉末的上转换发光性质 |
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| 引用本文： | 胡迎飞,王德强,李志进,卢俊杰,郑金标.Er~(3+)-Yb~(3+)共掺杂ZrO_2-TiO_2粉末的上转换发光性质[J].化学世界,2010,51(2). |
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| 作者姓名： | 胡迎飞 王德强 李志进 卢俊杰 郑金标 |
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| 作者单位： | 华东理工大学材料科学与工程学院,上海,200237 |
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| 摘 要： | 通过共沉淀方法制备了Er3+和Yb3+共掺的ZrO2-TiO2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Er3+离子的2H11/2,4S2/3→4I15/2and4F9/2→4I15/2跃迁。样品的红光和绿光强度随着ZrO2和TiO2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。
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| 关 键 词： | 上转换发光 ZrO2-TiO2 Er3+-Yb3+ 共沉淀 |
Upconversion Luminescence Properties of Er~(3+)-Yb~(3+)Co-doped Titania-zirconia Powders |
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| HU Ying-fei,WANG De-qiang,LI Zhi-jin,LU Jun-jie,ZHENG Jin-biao.Upconversion Luminescence Properties of Er~(3+)-Yb~(3+)Co-doped Titania-zirconia Powders[J].Chemical World,2010,51(2). |
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| Authors: | HU Ying-fei WANG De-qiang LI Zhi-jin LU Jun-jie ZHENG Jin-biao |
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| Affiliation: | School of Materials Science and Engineering;East China University of Science and Technology;Shanghai 200237;China |
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| Abstract: | 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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| Keywords: | ZrO_2-TiO_2 Er~(3+)-Yb~(3+) upconversion luminescence s titania-zirconia Er~(3+)-Yb~(3+) co-precipitation |
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