| 微乳液法制备（Y,Gd）2O3：Eu^3＋纳米粒子及光谱特性 |
| 其他题名 | Preparation and optical spectrum characterisitics of （Y, Gd）eO3：Eu^3＋ nanoparticles by microemulsion
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| 沈世妃; 马伟民; 闻雷; 郭易芬; 刘晶
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| 2008
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| 发表期刊 | 中国有色金属学报
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| ISSN | 1004-0609
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| 卷号 | 18.0期号:010页码:1931-1936 |
| 摘要 | 采用反相微乳液法制备（Y,Gd）2O3：Eu3＋纳米粉体。通过XRD、TG/DSC、SEM、TEM、PL等手段分别对样品的晶化过程、晶粒尺寸、粉体形貌以及发光性能进行分析。结果表明：晶粒尺寸随着晶化温度提高而增加,样品在800℃晶化完全。当乳液浓度为0.37mol/L时所得粉体颗粒呈近似球形,一次粒径尺寸约20nm。样品在612nm监控光下得到的激发光谱是宽带谱,对应着Eu3＋-O2-的电荷迁移带跃迁。发射光谱的特征峰位于612nm处,是由于Eu3＋离子的5D0-7F2跃迁造成的。当Eu的原子分数大于10%时发生浓度猝灭,导致特征峰强度降低。 |
| 其他摘要 | （Y, Gd）2O3：Eu^3＋ nanoparticles were prepared by reverse microemulsion method. The crystallization process, grain size, morphology and photoluminescence properties of the sample were characterized by XRD, TG/DSC, SEM, TEM and PL. The results show that the grain size increases with increasing crystallization temperature and the complete crystallization temperature of the precursor is 800 ℃. The particles are near-spherical with the primary size of 20 nm when the initiate concentration is 0.37 mol/L. The excitation spectra of （Y, Gd）2O3：Eu^3＋ is observed by monitoring at 612 nm, and there is a wide band which is due to the charge transfer band （CTB） of Eu^3＋-O^2-. The characteristic peak of （Y, Gd）2O3：Eu^3＋ locates at 612 nm which is caused by ^5D0-^7F2 transition of Eu^3＋ excited by 237 nm. When the atomic content of Eu is above 10%, the concentration quenching occurs and it leads to the intensity decreasing of the characteristic peak. |
| 关键词 | 反相微乳液
（Y,Gd）2O3：Eu3＋纳米粒子
发光性能
浓度猝灭
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| 收录类别 | CSCD
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| 语种 | 中文
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| CSCD记录号 | CSCD:3454774
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.imr.ac.cn/handle/321006/142494
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| 专题 | 中国科学院金属研究所
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| 作者单位 | 中国科学院金属研究所
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推荐引用方式
GB/T 7714 |
沈世妃,马伟民,闻雷,等. 微乳液法制备（Y,Gd）2O3：Eu^3＋纳米粒子及光谱特性[J]. 中国有色金属学报,2008,18.0(010):1931-1936.
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| APA |
沈世妃,马伟民,闻雷,郭易芬,&刘晶.(2008).微乳液法制备（Y,Gd）2O3：Eu^3＋纳米粒子及光谱特性.中国有色金属学报,18.0(010),1931-1936.
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| MLA |
沈世妃,et al."微乳液法制备（Y,Gd）2O3：Eu^3＋纳米粒子及光谱特性".中国有色金属学报 18.0.010(2008):1931-1936.
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