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Two-Dimensional IV-V Monolayers with Highly Anisotropic Carrier Mobility and Electric Transport Properties
Li, Pengfei1,2; Wu, Wenjun3; Xu, Yuehua3; Liu, Jun1,2; Wu, Shouliang1,2; Ye, Yixing1,2; Liang, Changhao1,2; Zeng, Xiao Cheng4
2021-01-28
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY LETTERS
ISSN1948-7185
Corresponding AuthorXu, Yuehua(yhxu@cczu.edu.cn) ; Liang, Changhao(chliang@issp.ac.cn) ; Zeng, Xiao Cheng(xzeng1@unl.edu)
AbstractTwo 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.
DOI10.1021/acs.jpclett.0c03656
Indexed BySCI
Language英语
Funding ProjectNational 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]
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; key research and development program of Anhui province ; National Natural Science Foundation of China
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical
WOS IDWOS:000614318900014
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/120210
Collection中国科学院合肥物质科学研究院
Corresponding AuthorXu, Yuehua; Liang, Changhao; Zeng, Xiao Cheng
Affiliation1.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
Recommended Citation
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).
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