| Long-lasting phosphorescence study on Y_3Al_5O_（12） doped with different concentrations of Ce~（3＋） |
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| 引用本文： | 张粟,李成宇,庞然,姜丽宏,师丽丽,苏锵.Long-lasting phosphorescence study on Y_3Al_5O_（12） doped with different concentrations of Ce~（3＋）[J].中国稀土学报(英文版),2011,29(5):426-430. |
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| 作者姓名： | 张粟 李成宇 庞然 姜丽宏 师丽丽 苏锵 |
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| 作者单位： | State Key Laboratory of Application of Rare Earth Resources;Changchun Institute of Applied Chemistry;Chinese Academy of Sciences;Graduate School of the Chinese Academy of Sciences; |
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| 基金项目： | Project supported by National Basic Research Program of China (2007CB935502); National Natural Science Foundation of China (20921002) |
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| 摘 要： | Long-lasting phosphorescence (LLP) was observed in Ce-doped Y3Al5O12 phosphors synthesized in reducing atmosphere. The characteristic emission of the 2D-2F5/2 and 2D-2F7/2 transition of Ce3+ in photoluminescence (PL) and LLP spectra was studied. It was interesting that the ratio between the peak areas of 2D-2F5/2 and 2D-2F 7/2 transitions in the PL spectrum was different from the ratio of that in LLP emission spectrum. And the ratios had different change regularities with increased Ce3+ concentration. The p...
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| 关 键 词： | Y3Al5O12 Ce LLP YAG 2D 缺陷 氧空位 比例 |
| 收稿时间： | 20 October 2010 |
Long-lasting phosphorescence study on Y_3Al_5O_(12) doped with different concentrations of Ce~(3+) |
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| ZHANG Su,LI Chengyu ,PANG Ran,JIANG Lihong ,SHI Lili,SU Qiang.Long-lasting phosphorescence study on Y_3Al_5O_(12) doped with different concentrations of Ce~(3+)[J].Journal of Rare Earths,2011,29(5):426-430. |
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| Authors: | ZHANG Su LI Chengyu PANG Ran JIANG Lihong SHI Lili SU Qiang |
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| Affiliation: | ZHANG Su1,2,LI Chengyu 1,PANG Ran1,JIANG Lihong 1,SHI Lili1,SU Qiang1 (1. State Key Laboratory of Application of Rare Earth Resources,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China,2. Graduate School of the Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | Long-lasting phosphorescence (LLP) was observed in Ce-doped Y3Al5O12 phosphors synthesized in reducing atmosphere. The characteristic emission of the 2D-2F5/2 and 2D-2F7/2 transition of Ce3+ in photoluminescence (PL) and LLP spectra was studied. It was interesting that the ratio between the peak areas of 2D-2F5/2 and 2D-2F7/2 transitions in the PL spectrum was different from the ratio of that in LLP emission spectrum. And the ratios had different change regularities with increased Ce3+ concentration. The possible reason was attributed to the defect in the YAG host, which was affected by increasing the Ce3+ concentration. There were indications that the defect in the Ce3+-doped YAG samples was strongly associated with oxygen vacancy. And the defect levels were studied through thermoluminescence (TL) experiment. The results showed that the trap depth was between 0.6 and 0.65 eV, and the kinetic order of the LLP was 2. |
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| Keywords: | YAG cerium defects long-lasting phosphorescence rare earths |
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