| 新型GdAlO3：RE荧光粉多元掺杂及发光机制研究 |
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| 引用本文： | 罗岚,刘庆峰,刘茜.新型GdAlO3：RE荧光粉多元掺杂及发光机制研究[J].感光科学与光化学,2005,23(1):1-5. |
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| 作者姓名： | 罗岚 刘庆峰 刘茜 |
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| 作者单位： | [1]南昌大学材料科学与工程学院，江西南昌330047 [2]中国科学院上海硅酸盐研究所高性能陶瓷和超微结构国家重点实验室，上海200050 |
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| 基金项目： | 国家自然科学基金委主任基金项目(20151003/B01);上海市科学技术发展基金项目(纳米科技专项)(0259nm021);上海市科委重点基金项目(02JC14015). |
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| 摘 要： | 采用柠檬酸盐硝酸盐燃烧法制备GaAlO3：RE荧光粉体．在紫外光激发T(254m)发现Pr共掺杂对GaAlO3：Eu红色荧光粉体发光有降低作用；Ce共掺杂对GaAlO3：Tb绿色荧光粉体发光有降低作用．激发谱研究表明，共掺杂时分别存在Eu→Pr、Tb→Ce的声子支持的共振能量传递，造成GaAlO3：Eu、GaAlO3：Tb荧光粉体发光强度降低．
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| 关 键 词： | 钙钛矿型铝酸钆盐 荧光粉体 能量传递 柠檬酸盐硝酸盐燃烧合成法 |
| 文章编号： | 1000-3231(2005)01-0001-05 |
| 修稿时间： | 2004年6月21日 |
Luminescent Properties and Mechanism of Co-Doped GdAlO3 :RE |
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| Abstract: | GdAlO_3:RE powder was prepared by nitric-citric process. Luminescent intensity of (GdAlO_3:) Eu decreased when it was co-doped with Pr, and GdAlO_3:Tb co-doped with Ce showed the same phenomenon. The results from excitation spectra indicated that there are the resonant energy transfer between Eu and Pr, Tb and Ce, by the absorption and emission of lower energy phonon. The resonant energy transfer between different RE species is one of main reasons why luminesent intensity decreasing. |
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| Keywords: | gadolinium-aluminum perovskite luminescence energy transmission citrate-nitrate combustion |
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