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Mn掺杂ZnO薄膜的结构及光学性能研究

赵跃智 陈长乐 高国棉 杨晓光 袁 孝 宋宙模

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Mn掺杂ZnO薄膜的结构及光学性能研究

赵跃智, 陈长乐, 高国棉, 杨晓光, 袁 孝, 宋宙模

Structure and optical properties of Mn doped ZnO thin films

Zhao Yue-Zhi, Chen Chang-Le, Gao Guo-Mian, Yang Xiao-Guang, Yuan Xiao, Song Zhou-Mo
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  • 通过脉冲激光沉积(PLD)法在SiO2基片上制备了不同含量的Mn掺杂ZnO薄膜.X射线衍射、X射线能谱、原子力显微镜与紫外-可见分光光度计测试结果表明:少量的Mn离子的掺杂并没有改变薄膜的结构,薄膜具有(103)面的择优取向;PLD法制备的ZnO薄膜的成分与靶材基本一致,实现了薄膜的同组分沉积;薄膜表面比较平坦,起伏度小于80nm,颗粒尺寸主要集中在25nm附近;但是Mn离子的掺杂改变了ZnO薄膜的禁带宽度,随Mn掺杂含量的增加,ZnO薄膜的禁带宽度增加;当薄膜中Mn含量从6%增加到
    Mn-doped ZnO thin films were prepared on SiO2 substrate using pulsed laser deposition (PLD) technique in order to investigate the structure and optical properties of the films. XRD, AFM, EDX analysis and UV-VIS spectrophotometry were employed to characterize the Mn-doped ZnO films. The results showed that the shape of the XRD spectrum was remarkably similar to that of the un-doped ZnO film, indicating that the structure of the films was not disturbed by Mn-doping and the film also had mainly (103) peaks. The contents of (Zn, Mn)O thin films prepared by PLD were consistent with the targets, thus realizing the thin films deposition with same constitutuents as the target. The films had rather flat surfaces with the peak-to-tail roughness of about 80nm and an average grain diameter of about 25nm. Mn-doping changed the band gap of the films, which increased with the increase of the Mn content. Moreover, when the Mn content increased from 6% to 12%,the absorbence in strong UV absorption band increased too.
    • 基金项目: 国家自然基金(批准号:50331040,60171034)资助的课题.
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出版历程
  • 收稿日期:  2005-10-18
  • 修回日期:  2005-12-17
  • 刊出日期:  2006-03-05

Mn掺杂ZnO薄膜的结构及光学性能研究

  • 1. (1)华中科技大学激光技术国家重点实验室,武汉 430074; (2)西北工业大学理学院应用物理系,西安 710072; (3)西北工业大学理学院应用物理系,西安 710072;空军工程大学理学院,西安 710051
    基金项目: 

    国家自然基金(批准号:50331040,60171034)资助的课题.

摘要: 通过脉冲激光沉积(PLD)法在SiO2基片上制备了不同含量的Mn掺杂ZnO薄膜.X射线衍射、X射线能谱、原子力显微镜与紫外-可见分光光度计测试结果表明:少量的Mn离子的掺杂并没有改变薄膜的结构,薄膜具有(103)面的择优取向;PLD法制备的ZnO薄膜的成分与靶材基本一致,实现了薄膜的同组分沉积;薄膜表面比较平坦,起伏度小于80nm,颗粒尺寸主要集中在25nm附近;但是Mn离子的掺杂改变了ZnO薄膜的禁带宽度,随Mn掺杂含量的增加,ZnO薄膜的禁带宽度增加;当薄膜中Mn含量从6%增加到

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