Effect of defects on ballistic transport in a bilayer SnS2 based junction with Co intercalated electrodes

IF 2.9 3区 化学 Q3 CHEMISTRY, PHYSICAL Physical Chemistry Chemical Physics Pub Date : 2025-01-02 DOI:10.1039/d4cp03605k
Miao Liu, Huan Wang, Xiaojie Liu, Yin Wang, Haitao Yin
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Abstract

This study theoretically investigates the defect-related electronic structure and transport properties in a device where a semiconductor bilayer SnS2 (BL-SnS2) serves as the central scattering region and bilayer SnS2 with cobalt atoms intercalation (Co-SnS2) as metallic electrodes. The Co-SnS2/BL-SnS2 junction forms an ohmic contact, which is robust to defects. Low contact resistance of 52.1 Ω·μm and 56.2 Ω·μm are obtained in the zigzag (ZZ) and armchair (AC) transport directions, respectively. Defects, whether near the interface or in the middle of the central region, reduce the barrier between metal and semiconductor and the contact resistance. In particular, defects in the middle of the central region introduce impurity states and may result in resonant tunneling processes. It causes leakage current in the AC direction but not in the ZZ direction because impurity-associated transmission peaks in the latter are always outside the bias window.
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来源期刊
Physical Chemistry Chemical Physics
Physical Chemistry Chemical Physics 化学-物理:原子、分子和化学物理
CiteScore
5.50
自引率
9.10%
发文量
2675
审稿时长
2.0 months
期刊介绍: Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.
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