| Eu3+掺杂Gd2W2O9和Gd2（WO4）3纳米荧光粉发光性质研究 |
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| 引用本文： | 冯晓辉,孟庆裕,孙江亭,吕树臣,孙立男.Eu3+掺杂Gd2W2O9和Gd2（WO4）3纳米荧光粉发光性质研究[J].物理学报,2011,60(3):037806-737. |
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| 作者姓名： | 冯晓辉 孟庆裕 孙江亭 吕树臣 孙立男 |
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| 作者单位： | 哈尔滨师范大学物理与电子工程学院黑龙江省先进功能材料与激发态重点实验室,哈尔滨,150025 |
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| 基金项目： | 国家自然科学基金(批准号:51002041),黑龙江省自然科学基金(批准号:A200812),黑龙江省科技厅2009年度高新技术攻关项目(批准号:09A405),黑龙江省教育厅科学技术研究计划(批准号:11551148),哈尔滨师范大学青年学术骨干资助计划(批准号:KGB200811) 资助的课题. |
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| 摘 要： | 采用共沉淀法制备了不同Eu3+掺杂浓度的Gd2W2O9和Gd2(WO4)3纳米发光材料.通过对纳米材料样品的X射线衍射谱(XRD)和场发射扫描电镜(FE-SEM)照片的观察和分析,对样品的结构和形貌进行了表征.测量了各样品的发射光谱、激发光谱,计算了各样品的部分J-O参数和Eu3+5D0能级量子效率,绘制了不同基质中Eu3+发光的浓度猝灭曲线,对Eu3+掺杂的Gd2W2O9和Gd2(WO4)3纳米发光材料的光致发光性质进行了研究.实验结果证明,与较常见的Gd2(WO4)3:Eu一样,Gd2W2O9:Eu中Eu3+5D0→7F2跃迁的红色发光也能被395nm和465nm激发光有效激发,具有近紫外(蓝光)相对激发效率高,猝灭浓度大的优点,有潜力成为高效的近紫外(蓝光)激发白光LED用红色荧光粉材料.
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| 关 键 词： | 白光LED 红色荧光粉 Eu3+ 钨酸盐 |
Luminescent properties of Eu3+ doped Gd2 W2O9 and Gd2 (WO4) 3 nanophosphors |
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| Feng Xiao-Hui,Meng Qing-Yu,Sun Jiang-Ting,Lü Shu-Chen,Sun Li-Nan.Luminescent properties of Eu3+ doped Gd2 W2O9 and Gd2 (WO4) 3 nanophosphors[J].Acta Physica Sinica,2011,60(3):037806-737. |
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| Authors: | Feng Xiao-Hui Meng Qing-Yu Sun Jiang-Ting Lü Shu-Chen Sun Li-Nan |
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| Institution: | The Key Laboratory of Advanced Functional Materials and Excited State of Heilongjiang Province, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, China;The Key Laboratory of Advanced Functional Materials and Excited State of Heilongjiang Province, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, China;The Key Laboratory of Advanced Functional Materials and Excited State of Heilongjiang Province, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, China;The Key Laboratory of Advanced Functional Materials and Excited State of Heilongjiang Province, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, China;The Key Laboratory of Advanced Functional Materials and Excited State of Heilongjiang Province, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, China |
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| Abstract: | Eu3 + doped Gd2W2O9 and Gd2 ( WO4 )3 nanophosphors with different concentrations were prepared via a co-precipitation method. The structure and morphology of the nanocrystal samples were characterized by using X-ray diffraction (XRD) and field emission scanning electron microscopy ( FE-SEM). The emission spectra and excitation spectra of the samples were measured,the J-O parameters and the quantum efficiencies of the 5D0 level of Eu3 + of the samples were calculated,and the concentration quenching curves of... |
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| Keywords: | white LED red nanophosphors Eu3+ tungstate |
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