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

doi:10.3788/fgxb20183912.1647

CORC > 长春光学精密机械与物理研究所 > 中国科学院长春光学精密机械与物理研究所

	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
刊名	CHINESE JOURNAL OF LUMINESCENCE
	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.
内容类型	期刊论文
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.