3R MoS2 with Broken Inversion Symmetry: A Promising Ultrathin Nonlinear   Optical Device

doi:10.1002/adma.201701486

CORC > 北京大学 > 化学与分子工程学院

	3R MoS2 with Broken Inversion Symmetry: A Promising Ultrathin Nonlinear Optical Device
	Shi, Jia ; Yu, Peng ; Liu, Fucai ; He, Peng ; Wang, Rui ; Qin, Liang ; Zhou, Junbo ; Li, Xin ; Zhou, Jiadong ; Sui, Xinyu ; Zhang, Shuai ; Zhang, Yanfeng ; Zhang, Qing ; Sum, Tze Chien ; Qiu, Xiaohui ; Liu, Zheng ; Liu, Xinfeng
刊名	ADVANCED MATERIALS
	2017
关键词	2ND-HARMONIC GENERATION ENHANCEMENT MONOLAYER GRAPHENE VALLEY
DOI	10.1002/adma.201701486
英文摘要	Nonlinear 2D layered crystals provide ideal platforms for applications and fundamental studies in ultrathin nonlinear optical (NLO) devices. However, the NLO frequency conversion efficiency constrained by lattice symmetry is still limited by layer numbers of 2D crystals. In this work, 3R MoS2 with broken inversion symmetry structure are grown and proved to be excellent NLO 2D crystals from monolayer (0.65 nm) toward bulk-like (300 nm) dimension. Thickness and wavelength-dependent second harmonic generation spectra offer the selection rules of appropriate working conditions. A model comprising of bulk nonlinear contribution and interface interaction is proposed to interpret the observed nonlinear behavior. Polarization enhancement with two petals along staggered stacking direction appears in 3R MoS2 is first observed and the robust polarization of 3R MoS2 crystal is caused by the retained broken inversion symmetry. The results provide a new arena for realizing ultrathin NLO devices for 2D layered materials.; Ministry of Science and Technology [2016YFA0200700]; National Natural Science Foundation of China [21673054]; Key Research Program of Frontier Science, CAS [QYZDB-SSW-SYS031]; Key Laboratory for UV-emitting Materials and Technology of Ministry of Education [130028699]; Singapore National Research Foundation (NRF) under RF [NRF-RF2013-08]; Nanyang Technological University [M4081137.070, M4080514]; Ministry of Education [MOE2013-T2-1-081, MOE2014-T2-1-044]; SCI(E); ARTICLE; 30; 29
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/462331]
专题	化学与分子工程学院工学院
推荐引用方式 GB/T 7714	Shi, Jia,Yu, Peng,Liu, Fucai,et al. 3R MoS2 with Broken Inversion Symmetry: A Promising Ultrathin Nonlinear Optical Device[J]. ADVANCED MATERIALS,2017.
APA	Shi, Jia.,Yu, Peng.,Liu, Fucai.,He, Peng.,Wang, Rui.,...&Liu, Xinfeng.(2017).3R MoS2 with Broken Inversion Symmetry: A Promising Ultrathin Nonlinear Optical Device.ADVANCED MATERIALS.
MLA	Shi, Jia,et al."3R MoS2 with Broken Inversion Symmetry: A Promising Ultrathin Nonlinear Optical Device".ADVANCED MATERIALS (2017).