Y2O3∶Eu3+纳米管阵列的荧光和拉曼光谱研究

功能材料, 2008, 39(2): 205-212.

Y2O3∶Eu3+纳米管阵列的荧光和拉曼光谱研究

杨雷 ^1, , 唐元洪 ^2, , 陈江华 ^3, , 陈小华 ^4, , 王倩 ^5, , 张伟 ^6, , 姜志 ^7,

1.湖南大学,材料科学与工程学院,材料物理系,湖南,长沙,410082

2.湖南大学,材料科学与工程学院,材料物理系,湖南,长沙,410082

3.中国科学院固体物理研究所,安徽,合肥,230031

4.湖南大学,材料科学与工程学院,材料物理系,湖南,长沙,410082

5.湖南大学,材料科学与工程学院,材料物理系,湖南,长沙,410082

6.湖南大学,材料科学与工程学院,材料物理系,湖南,长沙,410082

7.中国科学院固体物理研究所,安徽,合肥,230031

基金项目: 教育部科学技术研究项目(20040532014) 科技部资助项目(1999064501)

关键词： Y2O3∶Eu3+ , 纳米管 , 阵列

The phosphorescence and Raman scattering study on Y2O3∶Eu3+ nanotube arrays

用电场辅助电沉积的方法,在多空有序氧化铝模板(AMM)中成功合成了Eu3+掺杂的Y2O3纳米管阵列.扫描电镜和透射电镜观察表明这些稀土化合物纳米管是均匀、连续的、且相互平行.纳米管的外径大约60nm、壁厚3nm.实验中得到的全是纳米管,没有发现纳米丝.XRD、Raman光谱、XPS和荧光光谱表明Eu3+离子确实进入了晶格.大部分Eu3+离子占据缺少反对称中心的C2位置,只有少量的Eu3+离子占据具有对称中心的S6位置.在394nm波长的紫外光激发下,Y2O3纳米管阵列的发射光谱仅在612nm处有一个峰,这对应于Eu3+中电子的5D0→7F2跃迁.当Eu3+与Y3+的摩尔比为7.5%时,纳米管阵列的发光最强.

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