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1. 安徽大学, 物理与材料科学学院, 安徽省信息材料与器件重点实验室
2. 安徽大学, 化学化工学院
收稿:2007-09-29,
修回:2007-11-28,
纸质出版:2008-03-20
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李爱侠, 毕红, 刘艳美, 吴明在. Co,Cu共掺杂ZnO薄膜的结构及发光特性[J]. 发光学报, 2008,29(2): 289-293
LI Ai-xia, BI Hong, LIU Yan-mei, WU Ming-zai. Structure and Optical Properties of (Co,Cu)-codoped ZnO Thin Films[J]. Chinese Journal of Luminescence, 2008,29(2): 289-293
采用电子束蒸发沉积成膜工艺在单晶Si(111)衬底上制备出Co
Cu共掺杂的Zn
0.85-x
Co
0.15
Cu
x
O(x=0
0.04
0.06)多晶膜。采用X射线衍射(XRD)研究了Co、Cu掺杂对其微结构的影响;室温下测量了Zn
0.85-x
Co
0.15
Cu
x
O薄膜的光致发光谱
发现随着Cu掺杂量的增加
样品发光增强
当Cu掺杂x=0.06时
Zn
0.85-x
Co
0.15
Cu
x
O薄膜的PL谱中出现了较强的双峰蓝光发射;分析了掺杂含量对其发光性能的影响
并对样品的发光机制进行了探讨
并推断出蓝光峰来源于电子由导带底到锌空位(VZn)能级的跃迁及锌填隙(Zni)能级到价带顶的跃迁。
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