| 六铝酸盐基荧光粉的发光性能 |
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| 引用本文： | 张俊英,张中太,唐子龙.六铝酸盐基荧光粉的发光性能[J].材料科学与工艺,2002,10(2):213-218. |
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| 作者姓名： | 张俊英 张中太 唐子龙 |
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| 作者单位： | 清华大学材料系,新型陶瓷与精细工艺国家重点实验室,北京,100084 |
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| 基金项目： | 国家自然科学基金资助项目. |
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| 摘 要： | 综述了六铝酸盐基荧光粉的结构，以Mn^2 为例介绍了结构对荧光粉发光性能的影响。β-A12O3结构中，由于存在离敏化剂很近的四面体中心位置，Mn^2 占据此位置，从而存在敏化剂和Mn^2 之间的有效能量传递，Mn^2 发绿色光。磁铅矿结构中，由于四面体中心位置离敏化剂的距离太远，从而Mn^2 不发光；在畸变的磁铅矿结构中，由OMe的存在，产生局部离子位置重排，生成新的离敏化剂很近的四面体中心位置，从而存在敏化剂和Mn^2 之间的有效能量传递，使Mn^2 发光。荧光粉结构对性能影响规律的总结可以指导高效荧光粉的合成。
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| 关 键 词： | 荧光粉 六铝酸盐 结构 发光性能 稀土 锰 敏化剂 掺杂 |
| 文章编号： | 1005-0299(2002)02-0213-06 |
| 修稿时间： | 2000年12月7日 |
Luminescent properties of hexaaluminate phosphors |
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| ZHANG Jun-ying,ZHANG Zhong-tai,TANG Zi-long.Luminescent properties of hexaaluminate phosphors[J].Materials Science and Technology,2002,10(2):213-218. |
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| Authors: | ZHANG Jun-ying ZHANG Zhong-tai TANG Zi-long |
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| Abstract: | The purpose of this pap er is to study the relationship of crystal structure and luminescent properties o f phosphors.Crystal structure of hexaaluminate is reviewed and effect of crysta l structure on luminescent prop-erties of Mn 2+ ion doped aluminate-based phosphors is described.In aluminate with a cryst al structure ofa-a-luminate type,there is Mn 2+ in tetrahedral surrounding that is very near from the sensitizer.Energy tra nsfer takes place between sensitizer and Mn 2+ ion and Mn 2+ ion gives green emission.In aluminate with a crystal structure of magnetopl ubite type,there is no Mn 2+ emission because the tetrahedral surrounding site is very far from the sensi tizer.In aluminate with a crystal structure of distorted magnetoplumbite type, regrouping of differ-ent ions due to the existence of O Me results in new tetrahedral surrounding site that is very near from the sensi tiz-er,so the efficient energy transfer between sensitizer and Mn 2+ ion results in green emission of Mn 2+ ion.The summarized results are very useful to give direction in synthesis of efficient phosphors. |
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| Keywords: | phosphors hexaaluminate luminescent prope rties |
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