郑勇平;张志城;卢宇;黄志南;赖发春;黄志高;

• 1:福建师范大学物理与光电信息科技学院
• 2:福建师范大学物理与光电信息科技学院
• 3:福建师范大学物理与光电信息科技学院
• 4:福建师范大学物理与光电信息科技学院

摘要(Abstract)：

溶胶-凝胶法制备了Co掺杂的ZnO基稀磁半导体,研究其粉体和薄膜的结构和光学特性.X射线衍射结果表明Co2+随机替代Zn2+位置进入ZnO晶格,并引起晶格常数的变化.紫外-可见透射光谱表明样品的禁带宽度随着Co掺杂浓度的增大呈现非单调变化规律,低浓度掺杂样品的光学带隙随掺杂浓度增大而减小(红移),这是由于Co2+替代Zn2+,局域d电子与能带电子之间的sp-d交换耦合引起的.

关键词(KeyWords)： 稀磁半导体;ZnO;溶胶-凝胶法;透射光谱;禁带宽度

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(10474037);; 福建省自然科学基金资助项目(E032002A0510013)

作者(Authors): 郑勇平;张志城;卢宇;黄志南;赖发春;黄志高;

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