Two-dimensional PdSe2-Pd2Se3 junctions can serve as nanowires

Zuluaga, Sebastian1; Lin, Junhao2,5; Suenaga, Kazu2,3; Pantelides, Sokrates T.1,4

2018-07

10.1088/2053-1583/aac34c

2D Materials   影响因子和分区

2053-1583

While the exfoliation of almost all layered materials results in a monolayer with the same atomic geometry as its bulk counterpart, the exfoliation of PdSe2 results in a monolayer with a different atomic geometry and a new stoichiometry, Pd2Se3, which is a fusion of two PdSe2 monolayers mediated by Se emission. Here we first report first-principles calculations of lateral junctions between a PdSe2 bilayer and a Pd2Se3 monolayer. We find that, while several distinct junction geometries are possible, they all exhibit empty interface states below the conduction band. As a result, light n-type doping of either or both sides, e.g. by halogen atoms replacing Se atoms, leads to a remotely-doped interface, i.e. a 1D conducting nanowire that runs along the junction, in between the two semiconductors. We have fabricated such junctions inside a scanning transmission electron microscope (STEM), but doping and transport measurements are not currently practical.

lateral junction PdSe2 bilayer Pd2Se3 monolayer conducting nano wire empty interface states

SCI ; EI

英语

其他

Japan Society for the Promotion of Science (JSPS) KAKENHI[JP16H06333] ; Japan Society for the Promotion of Science (JSPS) KAKENHI[P16823]

Materials Science

Materials Science, Multidisciplinary

WOS:000433935100001

IOP PUBLISHING LTD

20182905568980

Atoms ; Calculations ; Geometry ; Interface states ; Monolayers ; Nanowires ; Semiconductor doping ; Semiconductor junctions ; Transmission electron microscopy

Semiconducting Materials:712.1 ; Semiconductor Devices and Integrated Circuits:714.2 ; Nanotechnology:761 ; Mathematics:921 ; Classical Physics; Quantum Theory; Relativity:931 ; Atomic and Molecular Physics:931.3 ; High Energy Physics; Nuclear Physics; Plasma Physics:932 ; Solid State Physics:933

Web of Science

1.Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA
2.Natl Inst Adv Ind Sci & Technol, AIST Cent 5, Tsukuba, Ibaraki 3058565, Japan
3.Univ Tokyo, Dept Mech Engn, Tokyo 1138656, Japan
4.Vanderbilt Univ, Dept Elect Engn & Comp Sci, 221 Kirkland Hall, Nashville, TN 37235 USA
5.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China

Zuluaga, Sebastian,Lin, Junhao,Suenaga, Kazu,et al. Two-dimensional PdSe2-Pd2Se3 junctions can serve as nanowires[J]. 2D Materials,2018,5(3).

Zuluaga, Sebastian,Lin, Junhao,Suenaga, Kazu,&Pantelides, Sokrates T..(2018).Two-dimensional PdSe2-Pd2Se3 junctions can serve as nanowires.2D Materials,5(3).

Zuluaga, Sebastian,et al."Two-dimensional PdSe2-Pd2Se3 junctions can serve as nanowires".2D Materials 5.3(2018).