| SiO2∶Sm粉体：溶胶-凝胶法制备及特殊荧光性能 |
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| 引用本文： | 谭伟民,陆春华,倪亚茹,王晓钧,许仲梓. SiO2∶Sm粉体：溶胶-凝胶法制备及特殊荧光性能[J]. 无机化学学报, 2009, 25(4): 635-640 |
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| 作者姓名： | 谭伟民 陆春华 倪亚茹 王晓钧 许仲梓 |
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| 作者单位： | 南京工业大学材料化学工程国家重点实验室,南京,210009 |
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| 基金项目： | 江苏省自然科学基金，教育部跨世纪优秀人才项目，江苏省高校自然科学基础研究项目 |
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| 摘 要： | 采用溶胶-凝胶法制备SiO2:Sm粉体,通过TG-DSC、FTIR、MAS-NMR、PL对材料的结构和性能进行测试表征.FTIR分析显示样品位于960 cm-1的吸收峰归属于Si-O-Sm键的变形振动,29Si MAS-NMR证实Sm3+进入SiO2网络结构.在380 nm入射光激发下样品产生除Sm3+特征发光以外的蓝绿荧光,对不同Sm3+掺量样品荧光性能进行对比分析,结果表明这种特殊的荧光发射与Si-O-Sm键的形成有关.
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| 关 键 词： | 溶胶-凝胶 光致发光 Si-O-Sm键 |
Unique Photoluminescence in SiO2:Sm Prepared by Sol-Gel Process |
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| TAN Wei-Min,LU Chun-Hu,NI Ya-Ru,WANG Xiao-Jun and XU Zhong-Zi. Unique Photoluminescence in SiO2:Sm Prepared by Sol-Gel Process[J]. Chinese Journal of Inorganic Chemistry, 2009, 25(4): 635-640 |
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| Authors: | TAN Wei-Min LU Chun-Hu NI Ya-Ru WANG Xiao-Jun XU Zhong-Zi |
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| Affiliation: | The State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009,The State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009,The State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009,The State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009 and The State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009 |
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| Abstract: | SiO2:Sm powders prepared by the sol-gel process were structurally characterized by thermogravimetric-differential scanning calorimetry(TG-DSC),Fourier transform infrared(FTIR)spectraoscopy and 29Si magic angle spinning nuclear magnetic resonance (MAS-NMR).The peaks near 960 cm-1 in FTIR results are assigned to the deformation vibration of Si-O-Sm linkages,and the samarium ion has been incorporated into the framework of SiO2 as validated by 29Si MAS-NMR.Blue-green and red photoluminescence(PL)emission in structural disordered SiO2:Sm powders was observed at room temperature with excitation at 380 nm.Study on the luminescence spectra of SiO2:Sm powders with different doping concentrations of Sm3+ indicates that the generation of the special PL band is relatedto the formation of Si-O-Sm linkages. |
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| Keywords: | SiO2 Sm SiO2:Sm:sol-gel Photoluminescence Si-O-Sm linkages |
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