MgZnO/MgO strained multiple-quantum-well nanocolumnar films: Stress-induced structural transition and deep ultraviolet emission
文献类型：期刊论文
| 作者 | Wang, L; Xu, HY; Zhang, C; Li, XH; Liu, YC; Zhang, XT; Tao, Y; Huang, Y; Chen, DL;陶冶 ; Huang Y(黄艳)
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| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
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| 出版日期 | 2012 |
| 卷号 | 513页码:399-403 |
| 关键词 | MgZnO/MgO Multiple-quantum-well Nanocolumn Structural transition Deep ultraviolet |
| 英文摘要 | MgZnO/MgO strained multiple-quantum-wells (S-MQWs) with different structures are grown by pulsed laser deposition. The S-MQW films are composed of closely arranged, vertically oriented nanocolumns. Z-contrast scanning transmission electron microscopy observations and line-scan compositional analysis reveal that the nanocolumns are compositionally modulated along their length and have a MQW structure. A coherent epitaxial relationship with a sharp interface is established between MgZnO and MgO layers with large lattice mismatch. It is worth noting that the MgZnO layer undergoes a structural transition from hexagonal to cubic phase with its thickness decreasing. The calculations reveal that a large in-plane compressive stress dominates such an interesting phase transition process, stabilizes the low Mg-content MgZnO alloy in the anomalous cubic phase, and also leads to a broadening of the band gap. As a result, the wavelength-tunable deep-ultraviolet emission in the range of 261-314 nm is obtained from these S-MQW nanocolumnar films. The 261 nm is known to be the shortest emission wavelength ever reported for MgZnO material. (C) 2011 Elsevier B. V. All rights reserved. |
| 学科主题 | Chemistry; Materials Science; Metallurgy & Metallurgical Engineering |
| 收录类别 | SCI |
| WOS记录号 | WOS:000298156400071 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/223970]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 推荐引用方式 GB/T 7714 | Wang, L,Xu, HY,Zhang, C,et al. MgZnO/MgO strained multiple-quantum-well nanocolumnar films: Stress-induced structural transition and deep ultraviolet emission[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2012,513:399-403. |
| APA | Wang, L.,Xu, HY.,Zhang, C.,Li, XH.,Liu, YC.,...&陈栋梁.(2012).MgZnO/MgO strained multiple-quantum-well nanocolumnar films: Stress-induced structural transition and deep ultraviolet emission.JOURNAL OF ALLOYS AND COMPOUNDS,513,399-403. |
| MLA | Wang, L,et al."MgZnO/MgO strained multiple-quantum-well nanocolumnar films: Stress-induced structural transition and deep ultraviolet emission".JOURNAL OF ALLOYS AND COMPOUNDS 513(2012):399-403. |
入库方式： OAI收割
来源：高能物理研究所
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