Polarity-manipulation based on nanoscale structural transformation on strained 2D MgO
文献类型：期刊论文
| 作者 | Liu, ZL ; He, X ; Mei, ZX ; Liang, HL ; Gu, L ; Duan, XF ; Du, XL |
| 刊名 | JOURNAL OF PHYSICS D-APPLIED PHYSICS
 |
| 出版日期 | 2014 |
| 卷号 | 47期号:10 |
| 关键词 | MgZnO ZnO polarity UV-detector structural transformation |
| ISSN号 | 0022-3727 |
| 通讯作者 | Liu, ZL (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | Strain induced nanoscale structural transformation is demonstrated in this paper to have the ability of triggering polarity flipping in a wide bandgap system of MgxZn1-xO/MgO/Al2O3. Relaxation dynamics of semiconductor components under large compressive pressures up to 13.7 GPa were studied by a combination of theoretical analysis and experimental characterizations including in situ reflection high-energy electron diffraction and high-resolution transmission electron microscopy. The gigantic force between MgZnO and ultrathin-MgO/Al2O3 delayed the structural transformation of MgZnO from six-fold cubic to four-fold wurtzite into the second monolayer, and consequently flipped the polarity of the film deposited on relaxed MgO. Additionally, dislocation-induced strain relaxation was suggested to happen around 1 nm thick cubic MgO grown on Al2O3, instead of the previous well-accepted concept that wurtzite structures can be inherited from the oxygen sub-lattice of sapphire substrates below the critical thickness. Finally, the structural transformation method employing an ultrathin-MgO interfacial layer was demonstrated to be a suitable technique for accommodating the large lattice mismatch comparing with the dislocation-relaxation mechanism achieving a UV photodetector with four orders of rejection ratio of the UV-to-visible photoresponse. |
| 资助信息 | Ministry of Science and Technology of China [2011CB302002, 2011CB302006, 2009CB929404]; National Science Foundation [61076007, 11174348, 51272280, 11274366, 61204067]; Chinese Academy of Sciences |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59263]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Liu, ZL,He, X,Mei, ZX,et al. Polarity-manipulation based on nanoscale structural transformation on strained 2D MgO[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS,2014,47(10). |
| APA | Liu, ZL.,He, X.,Mei, ZX.,Liang, HL.,Gu, L.,...&Du, XL.(2014).Polarity-manipulation based on nanoscale structural transformation on strained 2D MgO.JOURNAL OF PHYSICS D-APPLIED PHYSICS,47(10). |
| MLA | Liu, ZL,et al."Polarity-manipulation based on nanoscale structural transformation on strained 2D MgO".JOURNAL OF PHYSICS D-APPLIED PHYSICS 47.10(2014). |
入库方式： OAI收割
来源：物理研究所
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