| 氧化锌/硅纳米孔柱阵列的结构和光致发光特性研究 |
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| 引用本文： | 姚志涛,孙新瑞,许海军,姜卫粉,肖顺华,李新建.氧化锌/硅纳米孔柱阵列的结构和光致发光特性研究[J].物理学报,2007,56(10):6098-6103. |
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| 作者姓名： | 姚志涛 孙新瑞 许海军 姜卫粉 肖顺华 李新建 |
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| 作者单位： | 郑州大学物理系,材料物理教育部重点实验室,郑州,450052 |
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| 摘 要： | 以硅纳米孔柱阵列(Si-NPA)为衬底、用化学气相沉积法制备了具有规则阵列结构特征的ZnO/Si-NPA纳米复合体系，并对其结构和光致发光性质进行了表征. 实验结果显示，组成ZnO/Si-NPA表面阵列的每个柱子均呈现层壳结构. 不同于衬底Si-NPA的红光和蓝光发射，ZnO/Si-NPA在紫外光区和蓝绿光区呈现出两个强的宽发光峰. 分析表明，紫外光发射应归因于ZnO晶体的带边激子跃迁；而蓝绿光发射则来自于ZnO晶体本征缺陷所形成的两类深能级复合中心上载流子的辐射跃迁.
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| 关 键 词： | 硅纳米孔柱阵列(Si-NPA) ZnO/Si-NPA 光致发光 |
| 收稿时间： | 1/8/2007 12:00:00 AM |
| 修稿时间： | 2007-01-08 |
The structure and photoluminescence properties of ZnO/silicon nanoporous pillar array |
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| Yao Zhi-Tao,Sun Xin-Rui,Xu Hai-Jun,Jiang Wei-Fen,Xiao Shun-Hua,Li Xin-Jian.The structure and photoluminescence properties of ZnO/silicon nanoporous pillar array[J].Acta Physica Sinica,2007,56(10):6098-6103. |
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| Authors: | Yao Zhi-Tao Sun Xin-Rui Xu Hai-Jun Jiang Wei-Fen Xiao Shun-Hua Li Xin-Jian |
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| Institution: | Department of Physics and Key Laboratory of Material Physics of Education Ministry, Zhengzhou University, Zhengzhou 450052, China |
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| Abstract: | Regularly arrayed nanocomposite system of zinc oxide/silicon nanoporous pillar array (ZnO/Si-NPA) was prepared by chemical vapor deposition utilizing Si-NPA as substrate, and the corresponding structure and photoluminescence properties were characterized. Our experimental results disclosed that all the pillars of ZnO/Si-NPA have a core-shell structure. Different from the red and blue emission from Si-NPA, two strong and wide emission bands were observed in the ultraviolet and blue-green ranges. These emission bands are attributed to the band-edge exciton transition of ZnO crystallites and two kinds of deep-level transitions originating from its intrinsic defects. |
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| Keywords: | ZnO/Si-NPA |
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