| Hydrothermal preparation and persistence characteristics of nanosized phosphor SrS：Eu^2＋,Dy^3＋ |
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| 引用本文： | 段晓霞,黄世华,由芳田,康凯. Hydrothermal preparation and persistence characteristics of nanosized phosphor SrS：Eu^2＋,Dy^3＋[J]. 中国稀土学报(英文版), 2009, 27(1): 43-46. DOI: 10.1016/S1002-0721(08)60187-8 |
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| 作者姓名： | 段晓霞 黄世华 由芳田 康凯 |
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| 作者单位： | Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044, China |
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| 基金项目： | 国家自然科学基金，北京交通大学资助项目 |
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| 摘 要： |
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| 关 键 词： | 纳米荧光粉 SRS 水热合成 透射电子显微镜 铕 电荷耦合器件 烧结温度 排放强度 |
| 收稿时间： | 2008-07-21 |
Hydrothermal preparation and persistence characteristics of nanosized phosphor SrS: Eu2+, Dy3+ |
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| DUAN Xiaoxia,HUANG Shihua,YOU Fangtian,KANG Kai. Hydrothermal preparation and persistence characteristics of nanosized phosphor SrS: Eu2+, Dy3+[J]. Journal of Rare Earths, 2009, 27(1): 43-46. DOI: 10.1016/S1002-0721(08)60187-8 |
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| Authors: | DUAN Xiaoxia HUANG Shihua YOU Fangtian KANG Kai |
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| Affiliation: | (Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044, China) |
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| Abstract: | Nanosized long-persistent phosphors SrS: Eu2+, Dy3+ were prepared by the hydrothermal method. The samples were characterized by X-ray powder diffraction, transmission electron microscopy, and charge-coupled device spectrometry. The persistence characteristic was studied using the decay curves. The results showed that the emission intensity decreased sharply with temperature increasing, although the particle size increased. The S2- vacancies caused by oxidization served as shallow traps, and Dy3+ served as deep traps in SrS: Eu2+, Dy3+. The afterglow intensity of SrS: Eu2+, Dy3+ was higher than that of SrS: Eu2+ prepared at the same temperature. However, the minimization span of initial afterglow with temperature for the former sample was larger than that for the latter. Binary-doped phosphor decayed more slowly than the singly doped one. The afterglow of SrS: Eu2+, Dy3+ decayed more quickly with the increase of sintering temperature. |
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| Keywords: | hydrothermal preparation nanosized phosphor luminescence quenching afterglow spectra rare earths |
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