Revealing the Origins of 3D Anisotropic Thermal Conductivities of Black Phosphorus

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	Revealing the Origins of 3D Anisotropic Thermal Conductivities of Black Phosphorus
	Zhu, Jie 1,2; Park, Haechan 4; Chen, Jun-Yang 3; Gu, Xiaokun 5; Zhang, Hu 1,6; Karthikeyan, Sreejith 3; Wendel, Nathaniel 3; Campbell, Stephen A.3; Dawber, Matthew 4; Du, Xu 4
刊名	ADVANCED ELECTRONIC MATERIALS
	2016-05-01
卷号	2 期号:5
英文摘要	Black phosphorus (BP) has emerged as a direct bandgap semiconducting material with great application potentials in electronics, photonics, and energy conversion. Experimental characterization of the anisotropic thermal properties of BP at the micrometer scale is extremely challenging. This study reports measurement results of the anisotropic thermal conductivity of BP along three primary crystalline orientations, using a novel time-resolved magneto-optical Kerr effect. The thermal conductivity along the zigzag crystalline direction is 84-101 W m(-1) K-1, nearly three times as large as that along the armchair direction (26-36 W m(-1) K-1). The through-plane thermal conductivity of BP ranges from 4.3 to 5.5 W m(-1) K-1. This study performs first-principles calculation to predict the phonon transport in BP along both in-plane through-plane directions, and identifies that the strong anisotropy of thermal transport in BP can be attributed to the structural-asymmetry-induced group velocity variations along different crystalline orientations, and the relaxation time variation induced by the direction of the applied temperature gradient. This work successfully unveils the fundamental mechanisms of anisotropic thermal transport along the three crystalline directions in BP, as demonstrated by the excellent agreement between the first-principles-based theoretical predictions and experimental characterizations on the anisotropic thermal conductivities of BP.
WOS标题词	Science & Technology ; Technology ; Physical Sciences
类目[WOS]	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
研究领域[WOS]	Science & Technology - Other Topics ; Materials Science ; Physics
关键词[WOS]	FIELD-EFFECT TRANSISTORS ; TRANSPORT ; GRAPHENE ; NANORIBBONS ; MOBILITY ; PHONONS ; ACCESS
收录类别	SCI
语种	英语
WOS记录号	WOS:000377583600011
内容类型	期刊论文
源URL	[http://ir.etp.ac.cn/handle/311046/112458]
专题	工程热物理研究所_中国科学院工程热物理所（论文库）_期刊论文（SCI）
作者单位	1.Univ Minnesota, Dept Mech Engn, 111 Church St SE, Minneapolis, MN 55455 USA 2.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China 3.Univ Minnesota, Dept Elect & Comp Engn, Minneapolis, MN 55455 USA 4.SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA 5.Univ Colorado, Dept Mech Engn, Boulder, CO 80309 USA 6.Xi An Jiao Tong Univ, Key Lab Thermofluid Sci & Engn MOE, Xian 710049, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Jie,Park, Haechan,Chen, Jun-Yang,et al. Revealing the Origins of 3D Anisotropic Thermal Conductivities of Black Phosphorus[J]. ADVANCED ELECTRONIC MATERIALS,2016,2(5).
APA	Zhu, Jie.,Park, Haechan.,Chen, Jun-Yang.,Gu, Xiaokun.,Zhang, Hu.,...&Wang, Xiaojia.(2016).Revealing the Origins of 3D Anisotropic Thermal Conductivities of Black Phosphorus.ADVANCED ELECTRONIC MATERIALS,2(5).
MLA	Zhu, Jie,et al."Revealing the Origins of 3D Anisotropic Thermal Conductivities of Black Phosphorus".ADVANCED ELECTRONIC MATERIALS 2.5(2016).