| Co掺杂量对ZnO薄膜结构及光学特性的影响 |
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| 引用本文： | 温晓莉,陈钊,陈长乐.Co掺杂量对ZnO薄膜结构及光学特性的影响[J].功能材料,2009,40(6). |
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| 作者姓名： | 温晓莉 陈钊 陈长乐 |
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| 作者单位： | 1. 西北工业大学,凝固技术国家重点实验室,陕西,西安,710072
2. 西北工业大学,理学院,陕西,西安,710072 |
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| 基金项目： | 国家自然科学基金资助项目(50331040) |
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| 摘 要： | 采用脉冲激光沉积法(PLD)在SiO2村底上成功制备了具有c轴择优生长特性的Zn1-xCoxO(x=0.05、0.1、0.2、0.3)系列薄膜.通过X射线衍射和能谱仪研究了Co掺杂量对薄膜晶体结构和成分的影响;同时利用光致发光谱(PL)和透过率研究了薄膜的光学特性.结果表明,当掺杂浓度为10%时,薄膜生长最好,c轴择优生长最为显著;Co元素的掺入改变了薄膜的紫外、绿光和蓝光发射,分析认为主要是Co元素的掺入量改变了薄膜的禁带宽度、氧错位缺陷浓度和锌填隙缺陷的浓度;Co元素掺杂浓度为5%时,薄膜的透过率超过90%.此外,探讨了不同波段光发射的可能机理.
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| 关 键 词： | Zn1-xCoxO薄膜 掺杂浓度 光致发光 PLD |
Structural and photoluminescent properties of Zn_(1-x)Co_xO thin film |
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| WEN Xiao-li
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CHEN Zhao
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CHEN Chang-le.Structural and photoluminescent properties of Zn_(1-x)Co_xO thin film[J].Journal of Functional Materials,2009,40(6). |
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| Authors: | WEN Xiao-li CHEN Zhao CHEN Chang-le |
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| Abstract: | Zn1-xCoxO thin films were deposited on the SiO2 substrates by the pulse laser deposition.The thin films microstructure were investigated by X-ray diffractometer(XRD),composition were investigated by EDS.It is indicated all the thin films have obviously c-axis oriented grains dominate.Photoluminescence was measured at room temperature,when doping concentration are high,thin film emission are varied,and its quality and defects was affected.In addition,the diaphaneity of Co doped ZnO thin film were also studie... |
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| Keywords: | Zn1-xCoxO thin film doping concentration photoluminescence transmittance PLD |
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