Strain tuning of optical emission energy and polarization in monolayer and bilayer MoS2
文献类型：期刊论文
| 作者 | Zhu, CR ; Wang, G ; Liu, BL ; Marie, X ; Qiao, XF ; Zhang, X ; Wu, XX ; Fan, H ; Tan, PH ; Amand, T ; Urbaszek, B |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2013 |
| 卷号 | 88期号:12 |
| ISSN号 | 1098-0121 |
| 通讯作者 | Zhu, CR (reprint author), Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | We use micro-Raman and photoluminescence (PL) spectroscopy at 300 K to investigate the influence of uniaxial tensile strain on the vibrational and optoelectronic properties of monolayer and bilayer MoS2 on a flexible substrate. The initially degenerate E' monolayer Raman mode is split into a doublet as a direct consequence of the strain applied to MoS2 through Van der Waals coupling at the sample-substrate interface. We observe a strong shift of the direct band gap of 48 meV/(% of strain) for the monolayer and 46 meV/% for the bilayer, whose indirect gap shifts by 86 meV/%. We find a strong decrease of the PL polarization linked to optical valley initialization for both monolayer and bilayer samples, indicating that scattering to the spin-degenerate Gamma valley plays a key role. |
| 资助信息 | CAS [2011T1J37]; National Basic Research program of China [2009CB930502, 2009CB929301, 2010CB922904]; National Science Foundation of China [11174338, 10911130356, 11225421, 10934007]; Labex NEXT Project "Valley-hall"; ERC StG. OptoDNPcontrol |
| 语种 | 英语 |
| 公开日期 | 2014-01-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/57475]  |
| 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 | Zhu, CR,Wang, G,Liu, BL,et al. Strain tuning of optical emission energy and polarization in monolayer and bilayer MoS2[J]. PHYSICAL REVIEW B,2013,88(12). |
| APA | Zhu, CR.,Wang, G.,Liu, BL.,Marie, X.,Qiao, XF.,...&Urbaszek, B.(2013).Strain tuning of optical emission energy and polarization in monolayer and bilayer MoS2.PHYSICAL REVIEW B,88(12). |
| MLA | Zhu, CR,et al."Strain tuning of optical emission energy and polarization in monolayer and bilayer MoS2".PHYSICAL REVIEW B 88.12(2013). |
入库方式： OAI收割
来源：物理研究所
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