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| Ti/Si比例对Tb3+掺杂TiO2-SiO2复合粉末的发光影响 | |
| 引用本文： | 赵建果,韩运侠,刘照军,赵阿可. Ti/Si比例对Tb3+掺杂TiO2-SiO2复合粉末的发光影响[J]. 光散射学报, 2012, 24(2): 159-162 |
| 作者姓名： | 赵建果 韩运侠 刘照军 赵阿可 |
| 作者单位： | 洛阳师范学院物理与电子信息学院,洛阳,471022 |
| 基金项目： | 河南省科技攻关项目，河南省教育厅自然科学研究计划项目 |
| 摘 要： | 用溶胶-凝胶法制备了Tb3+离子掺杂的TiO2-SiO2复合粉末并研究了Ti/Si比例对复合粉末光致发光的影响。采用X射线衍射(XRD)、Raman和光致发光谱(PL)对Tb3+离子掺杂的TiO2-SiO2复合粉末进行了一系列的表征。PL谱的结果表明Tb3+离子5D4-7F5跃迁对应的550nm绿光发射最强。随着Ti/Si比例的减小, Tb3+离子在可见光范围的发光逐渐增强, 这可能是由于Tb3+离子周围环境的非晶化加剧引起的。 |
| 关 键 词： | TiO2-SiO2 光致发光 非晶 |
| 收稿时间： | 2011-06-30 |
Effect of Ti/Si Ratio on the Photoluminescence of Tb3+ Doped TiO2 - SiO2 Composite Powders |
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| ZHAO Jian-guo , HAN Yun-xia , LIU Zhao-jun , ZHAO A-ke. Effect of Ti/Si Ratio on the Photoluminescence of Tb3+ Doped TiO2 - SiO2 Composite Powders[J]. Chinese Journal of Light Scattering, 2012, 24(2): 159-162 | |
| Authors: | ZHAO Jian-guo HAN Yun-xia LIU Zhao-jun ZHAO A-ke |
| Affiliation: | (College of Physics and Electronic Information, Luoyang Normal College,Luoyang 471022,China) |
| Abstract: | Tb3+ ions doped TiO2-SiO2 composite powders with different Ti/Si ratio were fabricated by sol-gel method.The crystal structure and luminescence properties of the resulting powders were separately investigated by X-ray diffraction(XRD),Raman,and photoluminescence(PL) spectra.The powders showed dominant green emission at 550 nm due to the 5D4-7F5 transition of the Tb3+ ions.The intensity of visible emission due to Tb3+ ions increases with the decreasing of Ti/Si ratio.This result may be due to the increasing of amorphous of the surrounding enviroment in Tb3+ ions. |
| Keywords: | TiO2-SiO2 photoluminescence amorphous |
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