空位缺陷对基于CoN4C2的2D设备的异构电子传输行为的影响:一项第一原则研究
Wenhao Yang1, Tong Chen1,2, Luzhen Xie1
1School of Energy and Mechanical Engineering, Energy Materials Computing Center, Jiangxi University of Science and Technology, Nanchang, 330013, People's Republic of China.
单原子厚的化碳化 (CoN4C2) 单层显示出强大的异构电子传输. 的空缺增强了这种异构和负差电阻 (NDR),显示了先进电子设备的潜力.
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:
- 一个原子厚的材料提供了独特的电子特性.
- 不同类型的电子运输对于先进的电子技术至关重要.
- 化碳化 (CoN4C2) 单层是一种有前途的二维材料.
研究的目的:
- 为了研究CON4C2单层的电子结构和传输特性.
- 分析单原子空位缺陷 (Co,N,C) 对电子运输的影响.
- 探索CoN4C2在开关和负差电阻 (NDR) 设备中的潜力.
主要方法:
- 密度函数理论 (DFT) 的计算.
- 非平衡的格林函数 (NEGF) 方法.
- 系统地研究原始和缺陷的CoN4C2单层模型.
主要成果:
- CoN4C2单层仍然是有或没有Co,N,C单原子空位的金属.
- 纯净和Co/N-vacancy设备在扶手椅上显示出较强的传输比齐克扎克方向,表现出异构和NDR.
- N-空缺缺陷产生了最强的异构性 (IZ/IA高达7.95),N-1234显示了最高的异构性 (IZ/IA=6.12) 和NDR效应.
结论:
- 具有N空位的CoN4C2单层显示出显著的电子异性质和NDR.
- 该材料显示了集成到开关设备和多功能纳米设备的巨大潜力.
- 对缺陷工程的进一步研究可以优化特定电子应用的性能.
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