| 钠米Al2O3块体材料在可见光范围的荧光现象 |
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| 引用本文： | 牟季美,张立德,赵铁男,姚晓晖.钠米Al2O3块体材料在可见光范围的荧光现象[J].物理学报,1994,43(6):1000-1007. |
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| 作者姓名： | 牟季美 张立德 赵铁男 姚晓晖 |
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| 作者单位： | (1)中国科学技术大学材料科学与工程系; (2)中国科学技术大学材料科学与工程系,中国科学院固体物理研究所; (3)中国科学技术大学材料科学与工程系,中国科学院物理研究所 |
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| 基金项目： | 攀登计划纳米材料科学项目. |
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| 摘 要： | 对不同温度退火未掺Ｃｒ的纳米结构Ａｌ2Ｏ3块体的荧光谱进行了系统的研究。结果表明，在纳米级勃母石，η－Ａｌ2Ｏ3和γ－Ａｌ2Ｏ3试样中均观察到两个宽的荧光带（ｐ1和ｐ2带），它们的波数范围分别为２００００—１４５００和１４５００—１１５００ｃｍ－１。ｐ1带可归结为纳米Ａｌ2关键词：
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| 关 键 词： | 纳米材料 氧化铝 荧光 |
| 收稿时间： | 1993-06-14 |
FLUORESCENCE OF NANOSTRUCTURED Al2O3 BULKS IN VISIBLE LIGHT RANGE |
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| MO JI-MEI,ZHANG LI-DE,ZHAO TIE-NAN and YAO XIAO-HUI.FLUORESCENCE OF NANOSTRUCTURED Al2O3 BULKS IN VISIBLE LIGHT RANGE[J].Acta Physica Sinica,1994,43(6):1000-1007. |
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| Authors: | MO JI-MEI ZHANG LI-DE ZHAO TIE-NAN and YAO XIAO-HUI |
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| Abstract: | Fluorescence spectra of nanostructured Ａｌ2Ｏ3 bulks, which were not doped by Cr, were investigated systematically. The results show that for nanostructured samples of boehmite, η－Ａｌ2Ｏ3 and γ－Ａｌ2Ｏ3, two broad fluorescence bands (ｐ1 and ｐ2) appear, and ｐ1 and ｐ2 bands are located in the wavenumber ranges of 20000 to ～14500cm－１ and ～14500 to l1500cm－１, respectively. The ｐ1 band can be attributed to the trace impurity (Cr3+ ions) fluorescence. This is consistent with the previous results for Cr doped Ａｌ2Ｏ3. The ｐ2 band is a new fluorescence band. Finally, the stress is put on the discussion of conditions and the mechanism of the appearance of the ｐ2 band. |
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