| 氧流量对热蒸发CVD法生长β-Ga2O3纳米材料的结构及发光特性的影响 |
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| 引用本文： | 马海林,苏 庆,兰 伟,刘雪芹.氧流量对热蒸发CVD法生长β-Ga2O3纳米材料的结构及发光特性的影响[J].物理学报,2008,57(11):7322-7326. |
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| 作者姓名： | 马海林 苏 庆 兰 伟 刘雪芹 |
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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: 50402024，50872047)资助的课题. |
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| 摘 要： | 用热蒸发CVD法制备了β-Ga2O3纳米材料, 并用光致发光(PL)方法研究了其发光特性. Ｘ射线衍射分析显示, 产物为单斜结构的β-Ga2O3. 扫描电子显微镜测试表明: 在较小氧流量条件下制备的产物为β-Ga2O3纳米带, 宽度小于100nm, 长度有几微米; 较大氧流量时制备出β-Ga2O3纳米晶粒结构, 晶粒尺度在80—15
关键词：
光致发光
氧流量
纳米结构
2O3')" href="#">Ga2O3
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| 关 键 词： | 光致发光 氧流量 纳米结构 Ga2O3 |
| 收稿时间： | 2008-03-30 |
Influence of oxygen pressure on the structure and photoluminescence of β-Ga2O3 nano-material prepared by thermal evaporation |
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| Ma Hai-Lin,Su Qing,Lan Wei and Liu Xue-Qin.Influence of oxygen pressure on the structure and photoluminescence of β-Ga2O3 nano-material prepared by thermal evaporation[J].Acta Physica Sinica,2008,57(11):7322-7326. |
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| Authors: | Ma Hai-Lin Su Qing Lan Wei and Liu Xue-Qin |
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| Abstract: | We have prepared the gallium oxide (β-Ga2O3) nanomaterials from gallium and oxygen by thermal evaporation in the argon atmosphere and researched their photoluminescence (PL). X-ray diffraction (XRD) revealed that the synthesized products are monoclinic gallium oxide, and its morphology as observed by the scanning electron microscope (SEM) revealed that Ga2O3 nanobelts with breadth less than 100nm and length of several micrometers are synthesized under low oxygen pressure, while nanoparticles are synthesized under high oxygen pressure. Room-temperature photoluminescence under excitation of 325 nm shows that the β-Ga2O3 nanostructures have stable emission at 516 nm, which may be related to the defects such as the oxygen vacancies and the gallium-oxygen vacancy pairs. |
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| Keywords: | photoluminescence oxygen pressure nanostructure Ga2O3 |
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