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钠米Al2O3块体材料在可见光范围的荧光现象

牟季美 张立德 赵铁男 姚晓晖

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钠米Al2O3块体材料在可见光范围的荧光现象

牟季美, 张立德, 赵铁男, 姚晓晖

FLUORESCENCE OF NANOSTRUCTURED Al2O3 BULKS IN VISIBLE LIGHT RANGE

MO JI-MEI, ZHANG LI-DE, ZHAO TIE-NAN, YAO XIAO-HUI
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  • 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
    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.
    • 基金项目: 攀登计划纳米材料科学项目.
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出版历程
  • 收稿日期:  1993-06-14
  • 刊出日期:  1994-03-05

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