摘要
用溶胶-凝胶旋涂法在玻璃衬底上制备了Co,Cu单掺杂及(Co,Cu)共掺杂ZnO薄膜。磁性测量表明,无论是单掺还是共掺的ZnO薄膜都具有室温铁磁性,且Co掺杂和共掺杂ZnO薄膜的磁性相近,而Cu单掺ZnO薄膜磁性稍弱一点。用原子力显微镜和X射线衍射研究了Co,Cu掺杂对ZnO薄膜表面形貌和晶体结构的影响,在薄膜中没有发现第二相和磁性团簇的存在,且所有ZnO薄膜样品都存在(002)择优取向。室温光致发光测量在所有的样品中都观察到447和482nm附近的蓝光发射,认为是由于氧空位浅施主能级上的电子到价带上的跃迁所导致的。
Co,Cu doped and（Co,Cu）co-doped ZnO thin films were fabricated on the glass substrate by means of sol-gel method.All the samples exhibit room-temperature ferromagnetism.The influence of Co and Cu doping on surface morphologies and crystal structures of ZnO films was investigated by atomic force microscope（AFM）and X-ray diffraction（XRD）.The results reveal that all the ZnO samples show preferential orientation along（002）direction and the grain size of Cu-doped ZnO film is the biggest among these samples.Strong blue double emission and weak green emission were observed in the photoluminescent spectrum of all samples at room temperature.
出处
《半导体光电》
CAS
CSCD
北大核心
2010年第4期575-578,共4页
Semiconductor Optoelectronics
基金
四川省教育厅基金资助项目(2006C020)
