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1. 中国科学技术大学 物理系
2. 合肥工业大学 电子科学与应用物理学院
收稿:2009-10-20,
修回:2010-2-25,
网络首发:2010-09-21,
纸质出版:2010-09-21
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汪壮兵, 王 莉, 吴春艳, 于永强, 胡治中, 梁 齐, 许小亮, 揭建胜. 氧气压强对PLD制备MgZnO薄膜光学性质的影响[J]. 发光学报, 2010,31(5): 639-645
WANG Zhuang-bing, WANG Li, WU Chun-yan, YU Yong-qiang, HU Zhi-zhong, LIANG Qi, XU Xiao-liang, JIE Jian-sheng. Effect of Oxygen Pressure on the Optical Properties of MgZnO Films Prepared by PLD[J]. 发光学报, 2010,31(5): 639-645
汪壮兵, 王 莉, 吴春艳, 于永强, 胡治中, 梁 齐, 许小亮, 揭建胜. 氧气压强对PLD制备MgZnO薄膜光学性质的影响[J]. 发光学报, 2010,31(5): 639-645 DOI:
WANG Zhuang-bing, WANG Li, WU Chun-yan, YU Yong-qiang, HU Zhi-zhong, LIANG Qi, XU Xiao-liang, JIE Jian-sheng. Effect of Oxygen Pressure on the Optical Properties of MgZnO Films Prepared by PLD[J]. 发光学报, 2010,31(5): 639-645 DOI:
使用准分子脉冲激光沉积(PLD)方法在Si(100)基片上制备了高度
c
轴取向的MgZnO薄膜。分别使用SEM、XRD、XPS、PL谱和吸收谱表征了薄膜的形貌、结构、成分和光学性质。实验发现氧气压强对MgZnO薄膜的结构和光学性质有重要影响。当氧气压强由5 Pa增大到45 Pa时
薄膜的PL谱紫外峰蓝移了86 meV
表明氧气压强的增大提高了MgZnO薄膜中Mg的溶解度。在15 Pa氧气压强下制备的薄膜显示了独特、均匀的六角纳米柱状结构
其PL谱展示了优异的发光特性
具有比其他制备条件下超强的紫外发射和微弱的可见发光。500~600 nm范围内的绿光发射
我们讨论其机理可能源于深能级中与氧相关的缺陷。使用PLD得到纳米柱状结构表明:优化制备条件
可望使用PLD制备ZnO纳米阵列的外延衬底;可使用PLD技术开发基于ZnO纳米结构的高效发光器件。
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