Pressure-induced K-Λ Crossover of Excitons Emissions in Monolayer WSe2 and MoSe2

doi:10.3788/fgxb20183912.1647

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	Pressure-induced K-Λ Crossover of Excitons Emissions in Monolayer WSe2 and MoSe2
	Fu, Xin-Peng; Zhou, Qiang; Qin, Li; Li, Fang-Fei; Fu, Xi-Hong
	2018
发表期刊	CHINESE JOURNAL OF LUMINESCENCE
ISSN	10007032
卷号	39 期号:12 页码:1647-1653
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.
关键词	Tungsten compounds Calculations Excitons Fluorescence spectroscopy Molybdenum compounds Monolayers Selenium compounds
DOI	10.3788/fgxb20183912.1647
收录类别	EI
引用统计
文献类型	期刊论文
条目标识符	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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