Cu掺杂ZnO纳米粒子的光学性能及铁磁性  

Ferromagnetic and Optical Properties of Cu-doped ZnO Nanoparticles

作　　者：邢伯阳[1] 牛世峰[2] 

机构地区：[1]北京理工大学材料学院,北京100081 [2]吉林大学交通学院,吉林长春130022

出　　处：《材料科学与工程学报》2012年第3期333-336,332,共5页Journal of Materials Science and Engineering

摘　　要：利用溶胶凝胶法制备了纳米结构的Cu掺杂ZnO基稀磁半导体,通过X射线衍射分析表明,样品为纯相ZnO纤锌矿结构,磁性测量表明样品在室温下呈室温铁磁性,铁磁性来源为氧化锌晶格中的缺陷与Cu2+离子之间的交换作用。室温光致发光(PL)谱观察到紫外带边和可见光区两个发射峰,且随着Cu掺杂量增加,紫外峰淬灭,可见峰发射增强。Cu doped ZnO nanoparticles were prepared by the sol-gel method in order to study the origin of room temperature ferromagnetism and optical properties of ZnO-based diluted magnetic semiconductors. X- ray diffractometry （XRD） shows that Zna-xCu＋O samples are single phase with ZnO-like wurtzite structure. Znl-CuxO was ferromagnetic at room temperature, which ,attributed to the exchange interaction between the defects of zinc oxide and the doped Cu ions. All the samples show two distinct emissions, a sharp peak in the UV region and a broad deep level peak in the visible light regiom Cu doping into the ZnO lattice can effectively enhance the visible emission. Therefore, Znl-CuO system＇may be a potential candidate in splntronics and photocatalytic.

关 键 词：稀磁半导体 Cu掺杂ZnO 铁磁性 光学性能 

分 类 号：TB31[一般工业技术—材料科学与工程] TB383