Electrical contact between 2D material NbS2 and WSSe

IF 2.9 3区物理与天体物理 Q3 NANOSCIENCE & NANOTECHNOLOGY

Physica E-low-dimensional Systems & Nanostructures Pub Date : 2025-01-03 DOI:10.1016/j.physe.2025.116179

Jingjun Chen, Zelong Ma, Danni Wang, Xu Li, Songyang Li, Baoan Bian

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引用次数: 0

Abstract

Achieving Ohmic contact at the metal-semiconductor interface is a key technological issue for miniaturization and high performance of nanoelectronic devices. In this study, we design a metal-semiconductor heterostructure consisting of cold metal NbS₂ and semiconductor WSSe, and study the properties of the electric contact by first-principles calculations. SWSe/NbS₂ and SeWS/NbS₂ both show p-type Schottky contact with different Schottky barrier heights and high charge injection efficiency. The heterojunctions can achieve the Ohmic contacts under the modulation of the interlayer distance, strain and electric field. In addition, the electric field causes changed contact type from p-type Schottky contact to n-type Schottky contact for both heterojunctions. Different interface contact for WSSe/NbS₂ induces different electronic properties. The results provide the theoretical guidance for the application of WSSe/NbS₂ heterojunction in the development of next-generation electronic and optoelectronic devices.

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来源期刊

Physica E-low-dimensional Systems & Nanostructures 物理-纳米科技

CiteScore

7.30

自引率

6.10%

发文量

356

审稿时长

65 days

期刊介绍： Physica E: Low-dimensional systems and nanostructures contains papers and invited review articles on the fundamental and applied aspects of physics in low-dimensional electron systems, in semiconductor heterostructures, oxide interfaces, quantum wells and superlattices, quantum wires and dots, novel quantum states of matter such as topological insulators, and Weyl semimetals. Both theoretical and experimental contributions are invited. Topics suitable for publication in this journal include spin related phenomena, optical and transport properties, many-body effects, integer and fractional quantum Hall effects, quantum spin Hall effect, single electron effects and devices, Majorana fermions, and other novel phenomena. Keywords: • topological insulators/superconductors, majorana fermions, Wyel semimetals; • quantum and neuromorphic computing/quantum information physics and devices based on low dimensional systems; • layered superconductivity, low dimensional systems with superconducting proximity effect; • 2D materials such as transition metal dichalcogenides; • oxide heterostructures including ZnO, SrTiO3 etc; • carbon nanostructures (graphene, carbon nanotubes, diamond NV center, etc.) • quantum wells and superlattices; • quantum Hall effect, quantum spin Hall effect, quantum anomalous Hall effect; • optical- and phonons-related phenomena; • magnetic-semiconductor structures; • charge/spin-, magnon-, skyrmion-, Cooper pair- and majorana fermion- transport and tunneling; • ultra-fast nonlinear optical phenomena; • novel devices and applications (such as high performance sensor, solar cell, etc); • novel growth and fabrication techniques for nanostructures