Comparative investigation of the vibrational properties of bulk 2H-MoS2 and its exfoliated nanosheets under high pressure

doi:10.1002/jrs.5086

	Comparative investigation of the vibrational properties of bulk 2H-MoS2 and its exfoliated nanosheets under high pressure
	Gong Y(宫宇); Chen, DL; Li, XD; Zhao, YD; Zheng, L; Wang, Y; Shan, XM; Yang, DL; Li, PS; Gong, Y
刊名	JOURNAL OF RAMAN SPECTROSCOPY
	2017
卷号	48 期号:4 页码:596-600
关键词	MoS2 nanosheets TMDs high pressure longitudinal acoustic phonon
ISSN号	0377-0486
DOI	10.1002/jrs.5086
文献子类	Article
英文摘要	In this paper, we present a comparative study of the vibrational properties of bulk MoS2 and its exfoliated nanosheets under high pressure by resonant Raman spectroscopy. The X-ray photoelectron spectroscopy measurements demonstrate that the nanosheets made by chemical lithium insertion method are mainly consisted of metallic 1T phase. The wavenumbers of the E2g1 and A(lg) Raman modes for the few layer nanosheets show a linear relationship with pressure which is different from the multilayer MoS2. This phenomenon is due to the differences in their electronic band structure. The systematic research about the 2LA (M) in bulk 2H-MoS2 suggests that the high pressure behaviour of this double resonance Raman mode arises from the pressure-induced metallization and band gap closure. These difference vibrational properties for few and multilayer MoS2 can be applied for exploring pressure-modulated advanced devices. Copyright (c) 2017 John Wiley & Sons, Ltd.
电子版国际标准刊号	1097-4555
WOS关键词	HYDROGEN EVOLUTION REACTION ; MOS2 NANOSHEETS ; RAMAN-SCATTERING ; LAYER MOS2 ; TRANSITION ; WS2
WOS研究方向	Spectroscopy
语种	英语
WOS记录号	WOS:000398851300012
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/284845]
专题	高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Gong Y,Chen, DL,Li, XD,et al. Comparative investigation of the vibrational properties of bulk 2H-MoS2 and its exfoliated nanosheets under high pressure[J]. JOURNAL OF RAMAN SPECTROSCOPY,2017,48(4):596-600.
APA	宫宇.,Chen, DL.,Li, XD.,Zhao, YD.,Zheng, L.,...&郑雷.(2017).Comparative investigation of the vibrational properties of bulk 2H-MoS2 and its exfoliated nanosheets under high pressure.JOURNAL OF RAMAN SPECTROSCOPY,48(4),596-600.
MLA	宫宇,et al."Comparative investigation of the vibrational properties of bulk 2H-MoS2 and its exfoliated nanosheets under high pressure".JOURNAL OF RAMAN SPECTROSCOPY 48.4(2017):596-600.