| NaYF4:Yb,Er材料的制备及其上转换发光性能 |
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| 引用本文： | 李丽平,高玮,陈雪梅,赵月昌,吴秋芳,马新胜. NaYF4:Yb,Er材料的制备及其上转换发光性能[J]. 稀土, 2012, 0(2): 35-39 |
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| 作者姓名： | 李丽平 高玮 陈雪梅 赵月昌 吴秋芳 马新胜 |
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| 作者单位： | 华东理工大学化工学院国家超细粉工程研究中心;上海华明高纳稀土新材料有限公司 |
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| 摘 要： | 通过沉淀法制备Yb3+和Er3+共掺的NaYF4上转换发光材料,考察了主要制备工艺条件对材料上转换发光性能的影响,并探讨了其上转换发光的机理。利用x射线衍射(XRD)、透射电镜(TEM)、荧光光谱仪对样品进行了表征。结果表明,Yb3+和Er3+的掺杂浓度分别15%(摩尔分数,下同)、3%,焙烧温度为600℃时可得到发光性能较好的六方相NaYF4:Yb,Er上转换材料,其主要上转换途径是Yb3+和Er3+之间的能量转移,且Er3+的红、绿光发射均为双光子过程。
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| 关 键 词： | 上转换发光 沉淀法 NaYF4:Yb,Er |
Preparation and Luminescence properties of NaYF4:Yb,Er |
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| LI Li-ping,GAO Wei,CHEN Xue-mei,ZHAO Yue-chang,WU Qiu-fang,MA Xin-sheng. Preparation and Luminescence properties of NaYF4:Yb,Er[J]. Chinese Rare Earths, 2012, 0(2): 35-39 |
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| Authors: | LI Li-ping GAO Wei CHEN Xue-mei ZHAO Yue-chang WU Qiu-fang MA Xin-sheng |
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| Affiliation: | 1(1.The State Engineering Research Center of Uhrafine Powder,School of Chemical Engineering, East China University of Science and Technology,Shanghai 200237,China; 2.Shanghai Huaming Gona Rare Earth Materials Co.,Ltd,Shanghai 201613,China) |
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| Abstract: | In this paper,ytterbium(Yb3+) and erbium(Er3+) ions codoped NaYF4 were synthesized by precipitation method,the effect of the main preparation conditions on the upconversion luminescence was investigated,and the upconversion mechanism was analyzed.The samples were characterized by X-ray diffraction(XRD),transmission electron microscopy(TEM) and fluorescence spectroscopy.The results show that hexagonal NaYF4: Yb,Er up-conversion materials with excellent luminescence can be obtained when the concentrations of Yb3+ and Er3+ were 15% mol,3% mol respectively,roasted at 600℃,the main up-conversion approach is the energy transfer between Yb3+ and Er3+,and the red,green emissions of Er3+ are two-photon process. |
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| Keywords: | up-conversion luminescence precipitation method NaYF4:Yb,Er |
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