缺陷对两层SnS2基结与Co交叉电极的弹道运输的影响
Miao Liu1, Huan Wang1,2, Xiaojie Liu1
1Key Laboratory for Photonic and Electronic Bandgap Materials of Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin, 150025, China. wlyht@126.com.
Physical chemistry chemical physics : PCCP
|January 14, 2025
概括
本研究探讨了Co-SnS2/BL-SnS2设备中缺陷对电子结构和传输的影响. 缺陷降低了接触阻力,但可以导致扶手椅方向的泄漏电流.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 纳米技术 纳米技术
背景情况:
- 了解像双层锡二硫化物 (BL-SnS2) 等层级材料的电子特性对于下一代电子设备至关重要.
- 由于其独特的电子特性,二层二硫化物 (Co-SnS2) 具有作为金属电极的潜力.
研究的目的:
- 从理论上研究缺陷对Co-SnS2/BL-SnS2异质连接的电子结构和传输特性的影响.
- 分析缺陷位置 (接口与中心区域) 对接触电阻和设备性能的影响.
主要方法:
- 使用第一原则计算的理论调查.
- 分析电子带结构和传输频谱的分析.
- 在不同的缺陷条件下模拟电荷运输特性.
主要成果:
- Co-SnS2 / BL-SnS2 接口表现出欧姆接触行为,证明了对缺陷的稳定性.
- 实现了低接触电阻的52.1 Ω 微米 (齐格扎克) 和56.2 Ω 微米 (扶手椅).
- 缺陷通常通过降低金属半导体屏障来降低接触电阻.
- 中部区域的缺陷引入了杂质状态,可能导致共振道化和在扶手椅方向的泄漏电流.
结论:
- Co-SnS2 / BL-SnS2 接口是电子设备的有希望的候选者,提供低和耐缺陷的接触电阻.
- 缺陷工程提供了一个调整运输属性的途径,尽管需要仔细考虑,以减轻特定运输方向的不需要的泄漏电流.
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