| Luminescent properties of Eu~（3＋） doped Gd_2WO_6 and Gd_2（WO_4）_3 nanophosphors prepared via co-precipitation method |
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| 引用本文： | 张庆,孟庆裕,田跃,冯晓辉,孙江亭,吕树臣.Luminescent properties of Eu~（3＋） doped Gd_2WO_6 and Gd_2（WO_4）_3 nanophosphors prepared via co-precipitation method[J].中国稀土学报(英文版),2011,29(9):815-821. |
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| 作者姓名： | 张庆 孟庆裕 田跃 冯晓辉 孙江亭 吕树臣 |
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| 作者单位： | Heilongiiang Laboratory Low Dimensional Mesoscopic Physics, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China （51002041）; High and New Technique Project of Heilongjiang Province, China （GZ09A405）; Science and Technology Research Project of Education Bureau of Heilongjiang Province, China （12511139） |
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| 摘 要： | Eu3+ doped Gd2WO6 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), respectively. The emission spectra and excitation spectra of samples were measured. J-O parameters and quantum efficiencies of Eu3+ 5D0 energy level were calculated, and the concentration quenching of Eu3+ luminescence in different matrixes were studied. The results indicated that effective Eu3+:5D0-7F2 red luminescence could be achieved while excited by 395 nm near-UV light and 465 nm blue light in Gd2WO6 host, which was similar to the familiar Gd2(WO4)3:Eu. Therefore, the Gd2WO6:Eu red phosphors might have a potential application for white LED.
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| 关 键 词： | red nanophosphors tungstate co-precipitation luminescent properties rare earths |
| 收稿时间： | 1 June 2011 |
Luminescent properties of Eu doped Gd2WO6 and Gd2(WO4)3 nanophosphors prepared via co-precipitation method |
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| Qing ZHANG,Qingyu MENG,Yue TIAN,Xiaohui FENG,Jiangting SUN,Shuchen LÜ.Luminescent properties of Eu doped Gd2WO6 and Gd2(WO4)3 nanophosphors prepared via co-precipitation method[J].Journal of Rare Earths,2011,29(9):815-821. |
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| Authors: | Qing ZHANG Qingyu MENG Yue TIAN Xiaohui FENG Jiangting SUN Shuchen LÜ |
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| Affiliation: | (Heilongjiang Laboratory Low Dimensional Mesoscopic Physics, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, China) |
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| Abstract: | Eu3+ doped Gd2WO6 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), respectively. The emission spectra and excitation spectra of samples were measured. J-O parameters and quantum efficiencies of Eu3+5D0 energy level were calculated, and the concentration quenching of Eu3+ luminescence in different matrixes were studied. The results indicated that effective Eu3+:5D0−7F2 red luminescence could be achieved while excited by 395 nm near-UV light and 465 nm blue light in Gd2WO6 host, which was similar to the familiar Gd2(WO4)3:Eu. Therefore, the Gd2WO6:Eu red phosphors might have a potential application for white LED. |
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| Keywords: | red nanophosphors tungstate co-precipitation luminescent properties rare earths |
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