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Er3+掺杂SiO2复合的Al2O3粉末结构及光致发光特性

朱振华 雷明凯

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Er3+掺杂SiO2复合的Al2O3粉末结构及光致发光特性

朱振华, 雷明凯

Structure and photoluminescence of Er3+-doped Al2O3 composite powders by mixing with SiO2

Zhu Zhen-Hua, Lei Ming-Kai
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  • 采用溶胶-凝胶(sol-gel)工艺制备0.1 mol% Er3+掺杂Al2O3体系和SiO2-Al2O3复合体系粉末. 实验结果表明:5 mol%的SiO2复合加入Al2O3抑制γ→θ和θ→α相转变. 掺0.1 mol%Er3+:Al2O3体系粉末,900℃烧结,在1.47—1.63μm波段内光致发光(PL)谱为中心波长1.53 μm、半高宽56 nm的单一宽峰,1000—1200℃烧结,劈裂为多峰PL谱. 掺0.1 mol%Er3+:SiO2-Al2O3复合体系粉末,在高达1200℃烧结,仍保持中心波长1.53 μm的单一宽峰PL谱,由于—OH更完全的脱除,PL强度较900℃烧结Al2O3体系,SiO2-Al2O3复合体系均提高1个数量级.
    The 0.1 mol% Er3+-doped Al2O3 and SiO2-Al2O3 powders have been prepared by the sol-gel method. The results show that the addition of 5 mol% SiO2 into the Er3+-doped Al2O3 suppresses the phase transitions of γ→θ and θ→α. For the 0.1 mol% Er3+-doped Al2O3 powders at the sintered at temperature of 900℃, the broadband photoluminescence (PL) spectrum centered at 1.53 μm in the range from 1.47 μm to 1.63 μm was obtained with the full width at half maximum of 56 nm, and the splitted PL spectra appeared for powders sintered at 1000—1200℃. For the 0.1 mol% Er3+-doped Al2O3-SiO2 powders, the PL spectrum has a single broadband centered at 1.53 μm even when the sintering temperature is as high as 1200℃, and the PL intensity increases by one order of magnitude, because—OH group in the Al2O3-SiO2 powders has been removed completely, compared with that in the Al2O3 powders with and without mixing of SiO2 sintered at the temperature of 900℃.
    • 基金项目: 教育部科学研究重点项目(批准号:01052)资助的课题.
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  • 文章访问数:  6718
  • PDF下载量:  1323
  • 被引次数: 0
出版历程
  • 收稿日期:  2005-12-31
  • 修回日期:  2006-03-28
  • 刊出日期:  2006-09-20

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