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对二维半导体的拓范德瓦尔斯连接

Soheil Ghods^1,2, Hyunjin Lee², Jun-Hui Choi¹

¹Department of Materials Science and Engineering and Department of Energy Systems Research, Ajou University, Suwon 16499, Korea.

|September 12, 2024

概括

研究人员使用Sb$_{2}$Te$_{3}$开发了新的拓范德瓦尔斯接触,用于2D材料. 这些无损接触器显著降低了Schottky屏障高度,并提高了电子和光电子设备的性能.

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:

半导体技术的小型化在二维材料-金属接口方面面临着挑战.
金属诱导的间隙状态 (MIGS) 和Schottky屏障高度 (SBHs) 阻碍了设备的性能.

研究的目的:

介绍和演示Sb$_{2}$Te$_{3}$拓范德瓦尔斯 (T-vdW) 接触器作为2D材料的终极电极.
为了克服MIGS和SBH在二维电子设备中的局限性.

主要方法:

使用单层和多层WSe$_{2}$与Sb$_{2}$Te$_{3}$接触的p型和n型晶体管的制造.
接触电阻的表征,Schottky屏障高度和设备性能.
计算模拟以了解拓表面状态的作用.

主要成果:

在 WSe$_{2}$ 晶体管中实现了超低的 SBH (∼24 meV) 和接触电阻 (∼0.71 kΩ·μm).
证明了具有特殊光响应度 (716 A/W) 和快速响应时间 (∼60 μs) 的半欧姆行为.
模拟证实,Sb$_{2}$Te$_{3}$的拓表面状态可以减轻MIGS,提高设备的效率.

结论:

Sb$_{2}$Te$_{3}$ T-vdW接口为2D材料接口提供了一个无损的,高性能的解决方案.
拓接触器是先进电子产品中传统金属接触器的优质替代品.
这项工作为微型电子和光电子设备的革命性改进铺平了道路.

关键词:

斯科特基屏障的高度是和甲化的使用情况接触电阻接触电阻接触电阻光电子产品是光电子产品.拓绝缘体拓绝缘体拓绝缘体 vdW联系方式联系方式

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