| Al3+掺杂NaGdF4:Er3+/Yb3+纳米晶上转换发光性能的研究 |
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| 引用本文： | 王春霞,周海芳,赖云锋,俞金玲,程树英.Al3+掺杂NaGdF4:Er3+/Yb3+纳米晶上转换发光性能的研究[J].福州大学学报(自然科学版),2022,50(1):61-66. |
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| 作者姓名： | 王春霞 周海芳 赖云锋 俞金玲 程树英 |
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| 作者单位： | 福州大学物理与信息工程学院,福州大学物理与信息工程学院,福州大学物理与信息工程学院,福州大学物理与信息工程学院,福州大学物理与信息工程学院 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目）,福建省自然科学基金资助项目（面上项目，重点项目，重大项目） |
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| 摘 要： | 稀土离子掺杂的上转换纳米材料具有优异的光学性能，在光电等领域具有广阔的应用前景。本文采用溶剂热法，以乙二胺四乙酸(EDTA)为络合剂合成了的粗细均匀的六棱柱形的六方相Al3+掺杂NaGdF4:Er3+/Yb3+纳米棒。X射线研究表明适量的Al3+掺杂对NaGdF4的晶相没有产生影响，但使主衍射峰的位置发生偏移。在980nm激光激发下，与未掺杂的纳米晶相比，在Al3+的掺杂浓度为15%时，红绿光发光最大强度分别增强了5.7倍和5倍，且4F9 /2能级的荧光寿命被延长。Al3+掺杂对上转换发光的改善是因Er3+附近局部对称性的降低和粒子表面吸附基团的减少所致。
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| 关 键 词： | NaGdF4:Er3+/Yb3+纳米晶、溶剂热法、上转换发光、Al3+掺杂 |
| 收稿时间： | 2021/1/11 0:00:00 |
| 修稿时间： | 2021/10/25 0:00:00 |
Upconversion Luminescence of the NaGdF4:Er3+/Yb3+ Nanocrystals Doped with Al3+ Ions |
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| wangchunxi,zhouhaifang,Laiyunfeng,Yujinling and Chengshuying.Upconversion Luminescence of the NaGdF4:Er3+/Yb3+ Nanocrystals Doped with Al3+ Ions[J].Journal of Fuzhou University(Natural Science Edition),2022,50(1):61-66. |
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| Authors: | wangchunxi zhouhaifang Laiyunfeng Yujinling and Chengshuying |
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| Institution: | College of Physics and Information Engineering, Fuzhou University,College of Physics and Information Engineering, Fuzhou University,College of Physics and Information Engineering, Fuzhou University,College of Physics and Information Engineering, Fuzhou University,College of Physics and Information Engineering, Fuzhou University |
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| Abstract: | Upconversion nanomaterials doped with rare earth ions have excellent optical properties and have wide application in the field of optoelectronics. Hexagonal NaGdF4:Er3+/Yb3+ doped with Al3+ ions nanorods with uniform shape were synthesized by solvothermal method using ethylene diamine tetraacetic acid (EDTA) as complexing agent..X-ray studies revealed that a small amount of Al3+ ions doping had no affect on the crystal phase of NaGdF4, but made the position of the diffraction peak to shift. Compared with undoped NaGdF4:Er3+/Yb3+ nanocrystals, the highest enhancement factors of the red and green emissions were found to be 5.7, and 5 under 980 nm excitation for the nanocrystals doped with the at.15% Al3+ions, respectively. Longer lifetimes of the doped samples were observed for the 4F9 /2 state. The luminescence enhancement should be attributed to the distortion of local asymmetry around Er3+ and the reduction of adsorption groups on the particle surface. |
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| Keywords: | NaGdF4:Er3+/Yb3+ nanocrystals upconversion luminescence solvothermal method Al3+ ions doping |
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