| 火焰喷雾法合成ZnO和MgxZn1－xO纳米颗粒的光学性能研究 |
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| 引用本文： | 李 晖,谢二庆,张洪亮,潘孝军,张永哲.火焰喷雾法合成ZnO和MgxZn1－xO纳米颗粒的光学性能研究[J].物理学报,2007,56(6):3584-3588. |
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| 作者姓名： | 李 晖 谢二庆 张洪亮 潘孝军 张永哲 |
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| 作者单位： | 兰州大学物理科学与技术学院，兰州 730000 |
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| 基金项目： | 国家自然科学基金(批准号：60176002)资助的课题. |
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| 摘 要： | 利用火焰喷雾法成功制备了纳米级的ZnO和MgxZn1-xO颗粒. 通过对样品的X射线衍射谱和场发射扫描电子显微镜照片分析，发现制备的颗粒大小较为均匀，直径在20nm左右；镁元素的掺入引起晶格常数变小. 通过透射光谱和光致发光谱的测量，发现MgxZn1-xO颗粒的禁带宽度远大于ZnO颗粒的禁带宽度，同时对两组样品的紫外发光和可见发光的强度变化和发光机理进行了探讨.
关键词：
火焰喷雾
ZnO
禁带宽度
纳米颗粒
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| 关 键 词： | 火焰喷雾 ZnO 禁带宽度 纳米颗粒 |
| 文章编号： | 1000-3290/2007/56(06)/3584-05 |
| 收稿时间： | 2006-06-27 |
| 修稿时间： | 2006-06-27 |
Optical properties of ZnO and MgxZn1- x O nanoparticles prepared by flame spray synthesis |
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| Li Hui,Xie Er-Qing,Zhang Hong-Liang,Pan Xiao-Jun and Zhang Yong-Zhe.Optical properties of ZnO and MgxZn1- x O nanoparticles prepared by flame spray synthesis[J].Acta Physica Sinica,2007,56(6):3584-3588. |
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| Authors: | Li Hui Xie Er-Qing Zhang Hong-Liang Pan Xiao-Jun and Zhang Yong-Zhe |
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| Institution: | School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China |
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| Abstract: | Zinc oxide (ZnO) and magnesium doped ZnO (MgxZn1-xO) nanoparticles were prepared by flame spray synthesis. X-ray diffraction and field emission scanning electron microscopy were used to investigate the composition and structure of the samples. The results indicated that the samples contained nanoparticles of uniform size ranging between 10—20nm; and after introducing Mg into ZnO the lattice constant decreased. According to the UV-VIS transmission spectra, the band gap of MgxZn1-xO nanoparticles was wider than that of ZnO nanoparticles. The photoluminescence of the samples showed high intensity UV emission, and the mechanisms of emission were discussed. |
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| Keywords: | flame spray synthesis ZnO band gap nanoparticles |
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