Pressure-induced K-Λ Crossover of Excitons Emissions in Monolayer WSe2 and MoSe2
文献类型：期刊论文
| 作者 | Fu, Xin-Peng; Zhou, Qiang; Qin, Li ; Li, Fang-Fei; Fu, Xi-Hong
|
| 刊名 | CHINESE JOURNAL OF LUMINESCENCE
 |
| 出版日期 | 2018 |
| 卷号 | 39期号:12页码:1647-1653 |
| 关键词 | Tungsten compounds Calculations Excitons Fluorescence spectroscopy Molybdenum compounds Monolayers Selenium compounds |
| ISSN号 | 10007032 |
| DOI | 10.3788/fgxb20183912.1647 |
| 英文摘要 | Monolayer MoSe2 and WSe2 samples were prepared by mechanical exfoliation in diamond anvil cell(DAC). The high-pressure micro-area fluorescence spectroscopy technique was used to study excitons emission behavior under pressure in argon pressure-transmitting medium(PTM). The neutral and negative exciton evolutionary trends of monolayer WSe2 showed an inflection point at 2.43 GPa, and the neutral exciton emission of monolayer MoSe2 appeared a new split peak at 3.7 GPa. Combined with the first-principles calculation and analysis, we confirmed that the mechanism of these discontinuities is the pressure-induced conduction band bottom K- crossover. This result can be extended to the entire two-dimensional layered material family, and laying foundation for the development of exciton devices. 2018, Science Press. All right reserved. |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/60776]  |
| 专题 | 中国科学院长春光学精密机械与物理研究所 |
| 推荐引用方式 GB/T 7714 | Fu, Xin-Peng,Zhou, Qiang,Qin, Li,et al. Pressure-induced K-Λ Crossover of Excitons Emissions in Monolayer WSe2 and MoSe2[J]. CHINESE JOURNAL OF LUMINESCENCE,2018,39(12):1647-1653. |
| APA | Fu, Xin-Peng,Zhou, Qiang,Qin, Li,Li, Fang-Fei,&Fu, Xi-Hong.(2018).Pressure-induced K-Λ Crossover of Excitons Emissions in Monolayer WSe2 and MoSe2.CHINESE JOURNAL OF LUMINESCENCE,39(12),1647-1653. |
| MLA | Fu, Xin-Peng,et al."Pressure-induced K-Λ Crossover of Excitons Emissions in Monolayer WSe2 and MoSe2".CHINESE JOURNAL OF LUMINESCENCE 39.12(2018):1647-1653. |
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