| Eu2+掺杂Sr2SiO4长余辉材料的热释光研究 |
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| 作者姓名： | Peng TQ Wang YH Li Y Xiong Y |
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| 作者单位： | 广东工业大学物理与光电工程学院,广东广州,510006 |
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| 基金项目： | 国家自然科学基金项目(20871033)资助 |
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| 摘 要： | 采用高温固相法在弱还原的气氛下合成了Sr2SiO4高亮度的黄色长余辉材料.通过X射线衍射(XRD)分析发现所制得的样品属于α'-Sr2 SiO4斜方品系结构;样品的光致发光特性表明,在320 nm激发光的照射下,出现峰位为490 nm的宽带发射峰.样品余辉特性显示:样品的余辉衰减曲线符合双指数衰减.在温度293～598...
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| 关 键 词： | 长余辉 热释光 Sr2SiO4 高温固相法 陷阱能级 |
Thermoluminescence study on Sr2SiO4 long afterglow material doped with Eu2+ |
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| Peng TQ,Wang YH,Li Y,Xiong Y.Thermoluminescence study on Sr2SiO4 long afterglow material doped with Eu2+[J].Spectroscopy and Spectral Analysis,2011,31(12):3223-3227. |
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| Authors: | Peng Tie-qiu Wang Yin-hai Li Ya Xiong Yi |
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| Institution: | PENG Tie-qiu,WANG Yin-hai,LI Ya,XIONG Yi School of Physics and Optoelectronic Engineering,Guangdong University of Technology,Guangzhou 510006,China |
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| Abstract: | Sr2SiO4:Eu0.03(2+) phosphors were synthesized through the solid-state reaction technique. The X-ray diffraction shows that the phase of the phosphors is orthorhombic alpha'-Sr2SiO4. The produced phosphors show one intense emission band located at 490 nm. The phosphor shows a long afterglow properties excited by the sunlight. The decay characteristics show that the phosphors consist of a quick decay process and a slow decay process. The experimental results demonstrate that the thermoluminescence (TL) curves of the samples containing four peaks, located at 346, 420, 457 and 552 K, respectively. Meanwhile, the different peaks show the different decay characteristics, and the electron transfer between the trap levels was measured. |
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| Keywords: | Long afterglow Thermoluminescence Sr2SiO4 High temperature solid state reaction method Traps |
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