| ZnO∶Tb3+纳米晶的制备及发光性质研究 |
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| 引用本文： | 宋国利,梁红.ZnO∶Tb3+纳米晶的制备及发光性质研究[J].光子学报,2006,35(10):1589-1592. |
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| 作者姓名： | 宋国利 梁红 |
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| 作者单位： | 1. 哈尔滨学院,物理系,哈尔滨,150086;哈尔滨学院材料工程研究所,哈尔滨,150086
2. 哈尔滨学院,物理系,哈尔滨,150086 |
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| 基金项目： | 黑龙江省教育厅科学技术研究项目
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黑龙江省哈尔滨市科研项目 |
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| 摘 要： | 利用溶胶-凝胶法（Sol-Gel）制备了不同浓度的ZnO∶Tb3+纳米晶，测量了样品的光致发光谱(PL)和激发谱(PLE).在ZnO宽的可见发射背景上，观察到样品在485 nm、544 nm、584 nm和620 nm附近出现了稀土Tb3+的特征发射.给出了ZnO∶Tb3+纳米晶光致发光的峰值强度随掺Tb3+浓度的变化关系，分析了稀土Tb3+的激发态5D4→7F6、5D4→7F5和5D4→7F4的发射机制，证实了稀土Tb3+的特征发射来源于稀土离子内部4f电子的f-f跃迁和ZnO基质与稀土Tb3+离子之间能量传递.
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| 关 键 词： | ZnO∶Tb3+纳米晶 溶胶-凝胶法 光致发光 |
| 收稿时间： | 2006-03-02 |
| 修稿时间： | 2006年3月2日 |
Preparation and Photoluminescence Investigation of Terbium-doped Zinc Oxide Nanocrystalline |
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| Song Guoli,Liang Hong.Preparation and Photoluminescence Investigation of Terbium-doped Zinc Oxide Nanocrystalline[J].Acta Photonica Sinica,2006,35(10):1589-1592. |
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| Authors: | Song Guoli Liang Hong |
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| Institution: | 1.Department of Physics, Harbin University, Harbin 150086 ;2. Research Institute of Material Engineering, Harbin University, Harbin 150086 |
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| Abstract: | Terbium-doped zinc oxide nanocrystalline are successfully prepared by Sol-Gel process.Photoluminescence spectrum (PL) and Photoluminescence spectrum excitation (PLE) of nanocrystalline ZnO: Tb3+ with excitation wavelength 368 nm are measured at room temperature. The luminescence process of Tb3+-doped zinc oxide nanocrystalline has been investigated by using PL and PLE. Emission of 5D4→7F6(485 nm),5D4→7F5(544 nm),5D4→7F4(584 nm) and5D4 →7F3(620 nm) of Tb3+ ions,and weak and wide visible band of ZnO were observed. An energy transfer from excited states of ZnO hosts to doped Tb3+ ions centers is disclosed by the fact that Photoluminescence intensity of the maximum of nanocrystalline ZnO : Tb3+ on doping concentration of Tb3+ ions increases. |
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| Keywords: | ZnO : Tb3+ nanocrystalline Sol-Gel process Photoluminescence |
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