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Sr2SiO4: Eu,Dy中Ba2+和Ca2+部分替代Sr2+发光性能的研究
发表时间：2013-05-15 浏览量：1500 下载量：415
| 全部作者： | 初振明，李艳霞，谢金龙，王旭升，姚熹 |
| 作者单位： | 同济大学功能材料研究所 |
| 摘 要： | 采用传统固相烧结法在还原气氛(H2+N2)中制备了Eu2+，Dy3+共掺杂的SrxBa（2-x）/2Ca(2-x)/2SiO4:Eu2+,Dy3+陶瓷粉料。采用X射线衍射（X-ray diffraction，XRD）对其物相进行测试分析，分析表明随着x的减小，衍射峰出现小角度位移。采用荧光光谱仪测试材料的激发光谱、发射光谱特性。光谱分析结果表明：所制备的发光粉体激发光谱为宽带发射；随着x值的减少，其发射谱由x=2时的548.0 nm依次蓝移到x=0时的479.4 nm，实现了在这个范围的可控位移。 |
| 关 键 词： | 无机陶瓷材料；激发和发射；固相烧结法；SrxBa（2-x）/2Ca(2-x)/2SiO4: Eu2+, Dy3+ |
| Title： | Investigation on luminescent properties of Sr2SiO4: Eu, Dy by partial Ba2+, Ca2+ substitution for Sr2+ |
| Author： | CHU Zhenming, LI Yanxia, XIE Jinlong, WANG Xusheng, YAO Xi |
| Organization： | Functional Materials Research Laboratory, Tongji University |
| Abstract： | Phosphors of SrxBa(2-x)/2Ca(2-x)/2SiO4: Eu2+, Dy3+ were prepared by the conventional solid-state sintering method in a reduction atmosphere (H2+N2). X-ray diffraction (XRD) analysis confirmed that there were small angle X-ray scattering (SAXS) with the decrease of x value. Luminescent properties were studied with excitation spectra and emission spectra by the fluorescence spectrophotometer. The results exhibited broadband peaks in the excitation spectra. The peaks in the emission spectra had a blue shift from 548.0 nm (x=2) to 479.4 nm (x=0) with the decrease of x value. |
| Key words： | inorganic ceramic material; excitation and emission; solid-state sintering method; SrxBa(2-x)/2Ca(2-x)/2SiO4: Eu2+, Dy3+ |
| 发表期数： | 2013年5月第9期 |
| 引用格式： | 初振明，李艳霞，谢金龙，等. Sr2SiO4: Eu,Dy中Ba2+和Ca2+部分替代Sr2+发光性能的研究[J]. 中国科技论文在线精品论文，2013，6（9）：829-833. |
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