高性能WSe2顶端设备具有强大的间隔器兴奋剂
Po-Hsun Ho1, Yu-Ying Yang2, Sui-An Chou1
1Corporate Research, Taiwan Semiconductor Manufacturing Company, Hsinchu 300091, Taiwan.
Nano letters
|October 31, 2023
概括
研究人员使用酸 (HAuCl4) 开发了一种用于二维 (2D) 晶体管的新兴剂方法. 这种技术显著降低了接触阻力,并使高性能,通常关闭的设备没有复杂的门结构.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 固态物理 固态物理
背景情况:
- 高性能二维 (2D) 晶体管通常需要复杂的结构,因为接触和间隔器的限制.
- 现有的二维设备制造方法在实现高效的兴奋剂方面面临挑战,影响设备性能和可扩展性.
研究的目的:
- 为了研究酸 (HAuCl4) 作为晶体管中化 (WSe2) 单层的p-dopant 的功效.
- 探索2D晶体管的新兴兴奋剂策略,以克服制造挑战并增强设备特性.
主要方法:
- 利用酸 (HAuCl4) 作为WSe2单层的强大的p-dopant.
- 制造和特征化晶体管,包括HAuCl4合剂和研究载体扩散现象.
- 针对兴奋剂的优化间隔长度,以实现设备正常关闭的操作.
主要成果:
- 在1.76 × 10^13 cm^-2.2的兴奋剂度下,达到0.7 kΩ·μm的创纪录的低接触电阻.
- 在HAuCl4-WSe2系统中发现了一个外部载体扩散现象.
- 证明了成功制造一个正常关闭的,高性能底层顶端门装置,在接触/间隔区域没有额外的门.
结论:
- 酸 (HAuCl4) 是WSe2单层的有效p-dopant,显著提高了接触电阻.
- 发现的载体扩散现象为设备设计和优化提供了新的可能性.
- 这种兴奋剂方法可以创建具有简化结构的先进的高性能2D晶体管.
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