相关实验视频

Updated: Jul 1, 2025

Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations

Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations

Published on: October 12, 2019

第一原则研究基于双烯,净烯,烯+和T-烯的纳米带的电子特性

Wensheng Zhou¹, Cheng Luo¹, Yun Chao¹

¹Energy Materials Computing Center, Jiangxi University of Science and Technology Nanchang 330013 PR China 279916153@qq.com.

|March 8, 2024

概括

研究人员探索了像网石墨烯这样的新二维碳材料,发现它们表现出金属性质和电子纳米设备的潜力. 一些纳米丝带显示半导体行为,可根据宽度调节带间隙.

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
计算化学计算化学

背景情况:

石墨烯的发现刺激了人们对新的二维碳材料的兴趣.
探索独特的电子结构和传输特性对于先进的电子技术至关重要.

研究的目的:

系统地研究双烯,净石墨烯,石墨烯+和T石墨烯的电子结构.
在非对称调节下揭示网石墨烯纳米设备的电子传输特性.
分析结构变化的影响碳纳米带的电子特性.

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.
电子运输纳米设备模型的模拟.

主要成果:

双烯,净石墨烯,石墨烯+和T石墨烯具有金属性质.
在双烯和净石墨烯中观察到异性otropic行为;在石墨烯+和T-石墨烯中观察到异性otropic行为.
一些纳米丝带显示半导体特性与可调节的带间隙,而其他仍然是金属的.
在净石墨烯纳米器件中发现的负差分电阻 (NDR) 特性.

结论:

研究的二维碳全方位具有独特的电子性质.
网石墨烯纳米设备显示出有前途的负差电阻,适合电子应用.
这些新型碳材料对未来的电子纳米设备具有重大潜力.

更多相关视频

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Published on: July 24, 2015

Fabrication of Three-Dimensional Graphene-Based Polyhedrons via Origami-Like Self-Folding

Fabrication of Three-Dimensional Graphene-Based Polyhedrons via Origami-Like Self-Folding

Published on: September 23, 2018

相关概念视频

Network Covalent Solids

Network Covalent Solids

Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...