Co掺杂ZnO纳米棒的共振拉曼光谱和发光特性

摘要

采用X射线衍射(XRD)和透射电子显微镜(TEM)手段对微乳液法合成的Zn0.9Co0.1O纳米棒进行了表征.通过室温下的共振拉曼光谱和光致发光光谱手段,研究了所合成纳米材料的共振拉曼光谱和发光特性,并与体相ZnO的研究结果对比,发现合成的材料具有四阶声子紫外共振拉曼散射,而体相材料只有两阶,并观察到在紫外和可见区域所合成材料发光的变化规律也和体相材料存在差异,讨论了产生差异的原因.%X-ray diffraction (XRD) and transmission electron microscope (TEM) are used to characterize the Co-doped ZnO nanorods (Zn0.9 Co0.1 O) prepared by microemulsion method. The optical properties of the nanorods compared with that of the bulk ZnO samples are studied by photoluminescence spectra and resonance Raman spectra at room temperature. Up to four-order resonance Raman spectra and different photoluminescence are observed in Co-doped ZnO nanorods. The causes of the differences are discussed in this paper.