Two-Dimensional IV-V Monolayers with Highly Anisotropic Carrier Mobility and Electric Transport Properties

doi:10.1021/acs.jpclett.0c03656

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	Two-Dimensional IV-V Monolayers with Highly Anisotropic Carrier Mobility and Electric Transport Properties
	Li, Pengfei 1,2; Wu, Wenjun 3; Xu, Yuehua 3; Liu, Jun 1,2; Wu, Shouliang1,2 ; Ye, Yixing1,2 ; Liang, Changhao1,2 ; Zeng, Xiao Cheng 4
	2021-01-28
发表期刊	JOURNAL OF PHYSICAL CHEMISTRY LETTERS
ISSN	1948-7185
通讯作者	Xu, Yuehua(yhxu@cczu.edu.cn) ; Liang, Changhao(chliang@issp.ac.cn) ; Zeng, Xiao Cheng(xzeng1@unl.edu)
摘要	Two dimensional (2D) semiconductors with anisotropic properties (e.g., mechanical, optical, and electric transport anisotropy) have long been sought in materials research, especially 2D semiconducting sheets with strong anisotropy in carrier mobility, e.g., n-type in one direction and p-type in another direction. Here, we report a comprehensive study of the carrier mobility and electric transport anisotropy of a class of 2D IV-V monolayers, XAs (X = Si or Ge), by using density functional theory methods coupled with deformation potential theory and non-equilibrium Green's function method. We find that the polarity of room-temperature carrier mobility mu of the 2D XAs monolayer is highly dependent on the lattice direction. In particular, for the SiAs monolayer, the mu values of the electron (e) and hole (h) are 1.25 x 10(3) and 0.39 x 10(3) cm(2) V-1 s(-1), respectively, in the a direction and 0.31 x 10(3) and 1.12 x 10(3) cm(2) s(-1), respectively, for the b direction. The computed electric transport properties also show that the SiAs monolayer exhibits strong anisotropy in the biased voltage in the range of -1 to 1 V. In particular, the current reflects the ON state in the a direction but the OFF state in the b direction. In find that the uniaxial strain can significantly improve the electric transport performance and even lead to the negative differential conductance at 10% strain. The unique transport properties of the 2D XAs monolayers can be exploited for potential applications in nanoelectronics.
DOI	10.1021/acs.jpclett.0c03656
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China (NSFC)[11604320] ; National Natural Science Foundation of China (NSFC)[51571186] ; National Natural Science Foundation of China (NSFC)[11674321] ; National Natural Science Foundation of China (NSFC)[51801205] ; key research and development program of Anhui province[201904a05020049] ; National Natural Science Foundation of China[51772213]
项目资助者	National Natural Science Foundation of China (NSFC) ; key research and development program of Anhui province ; National Natural Science Foundation of China
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical
WOS记录号	WOS:000614318900014
出版者	AMER CHEMICAL SOC
引用统计	被引频次：22[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/120210
专题	中国科学院合肥物质科学研究院
通讯作者	Xu, Yuehua; Liang, Changhao; Zeng, Xiao Cheng
作者单位	1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China 2.Chinese Acad Sci, Inst Solid State Phys, Anhui Key Lab Nanomat & Nanotechnol, Hefei 230031, Peoples R China 3.Changzhou Univ, Sch Microelect & Control Engn, Changzhou 213164, Jiangsu, Peoples R China 4.Univ Nebraska Lincoln, Dept Chem, Lincoln, NE 68588 USA
推荐引用方式 GB/T 7714	Li, Pengfei,Wu, Wenjun,Xu, Yuehua,et al. Two-Dimensional IV-V Monolayers with Highly Anisotropic Carrier Mobility and Electric Transport Properties[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2021,12.
APA	Li, Pengfei.,Wu, Wenjun.,Xu, Yuehua.,Liu, Jun.,Wu, Shouliang.,...&Zeng, Xiao Cheng.(2021).Two-Dimensional IV-V Monolayers with Highly Anisotropic Carrier Mobility and Electric Transport Properties.JOURNAL OF PHYSICAL CHEMISTRY LETTERS,12.
MLA	Li, Pengfei,et al."Two-Dimensional IV-V Monolayers with Highly Anisotropic Carrier Mobility and Electric Transport Properties".JOURNAL OF PHYSICAL CHEMISTRY LETTERS 12(2021).