The electronic structure of strained zno/mgxzn1-xo superlattices and the influence of polarization
文献类型：期刊论文
| 作者 | Xiong, Wen; Li, Shu-Shen |
| 刊名 | Physica e-low-dimensional systems & nanostructures
 |
| 出版日期 | 2009 |
| 卷号 | 41期号:3页码:506-512 |
| 关键词 | Zno Zno/mgxzn1-xo superlattice Electronic structure Polarization |
| ISSN号 | 1386-9477 |
| DOI | 10.1016/j.physe.2008.09.013 |
| 通讯作者 | Xiong, wen(wenxiong@semi.ac.cn) |
| 英文摘要 | Based on the effective-mass model, the lower energies of the electron and the hole of zno/mgxzn1-xo superlattices are calculated. because of the mismatch of the lattice constant between the zno well and the mgxzn1-xo barrier, piezoelectric and spontaneous polarization exist in zno/mgxzn1-xo superlattices and a macroscopical internal electric held is found when well width l-w >4 nm and mg concentration x > 0.2. the parameters of zno/mgxzn1-xo superlattices such as lattice constant, band offset, etc. are also proposed. through calculations, we found the internal electric field can change the lowest energies of the electron and hole to 105.4 and 85.1 mev when well width l-w up to 70 angstrom, which will influence the electronic and optical properties of zno/mgxzn1-xo superlattices greatly, while the rashba effect from the internal electric field is so small that it can be neglected. the ground state exciton energies with different mg concentration x are also calculated by variational method, our results are very close to the experimental results when mg concentration x <= 0.3. (c) 2008 elsevier b.v. all rights reserved. |
| WOS关键词 | ENERGIES |
| WOS研究方向 | Science & Technology - Other Topics ; Physics |
| WOS类目 | Nanoscience & Nanotechnology ; Physics, Condensed Matter |
| 语种 | 英语 |
| WOS记录号 | WOS:000263015700035 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2427728 |
| 专题 | 半导体研究所 |
| 通讯作者 | Xiong, Wen |
| 作者单位 | Chinese Acad Sci, Inst Semicond, State Key Lab Superlattices & Microstruct, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xiong, Wen,Li, Shu-Shen. The electronic structure of strained zno/mgxzn1-xo superlattices and the influence of polarization[J]. Physica e-low-dimensional systems & nanostructures,2009,41(3):506-512. |
| APA | Xiong, Wen,&Li, Shu-Shen.(2009).The electronic structure of strained zno/mgxzn1-xo superlattices and the influence of polarization.Physica e-low-dimensional systems & nanostructures,41(3),506-512. |
| MLA | Xiong, Wen,et al."The electronic structure of strained zno/mgxzn1-xo superlattices and the influence of polarization".Physica e-low-dimensional systems & nanostructures 41.3(2009):506-512. |
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来源：半导体研究所
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