在5nm以下节点的值电压下使用无连接的多纳米板FETs进行压应变增强灵敏度
Nitish Kumar1, Khanjan Joshi1, Ankur Gupta1
1Centre for Applied Research in Electronics, Indian Institute of Technology, Delhi, India.
Nanotechnology
|May 17, 2024
概括
这项研究通过对多纳米板通道施加机械应力来增强纳米级晶体管的压力感应. 优化的低门偏差和通道宽度显著提高了灵敏度,特别是在下值模式中.
科学领域:
- 半导体设备物理学 半导体设备物理
- 材料科学是一种材料科学.
背景情况:
- 压电阻传感器对于压力检测至关重要.
- 提高纳米级晶体管的灵敏度仍然是一个挑战.
研究的目的:
- 为了提高5nm以下无连接场效应晶体管 (JLFETs) 的压缩感应度.
- 研究机械应力 (MS) 对多纳米板 (NS) 通道的影响.
- 探索设备设计参数,以优化压力传感.
主要方法:
- 在5nm以下的JLFET中对多纳米板通道施加均的机械应力.
- 通过低门偏差调节通道导电性并减少物理通道宽度.
- 使用横向的多纳米板堆叠来实现统一的应力分布.
主要成果:
- 与ON状态相比,在子值状态下达到大约6倍的最大灵敏度增强.
- 观察到在多NS堆叠时,在值电压附近进一步增加了~30.3%的灵敏度.
- 由于减少散射,更好的热稳定性和更低的电子噪声,在反转模式设备上表现出优越的性能.
结论:
- 多纳米板通道的均机械应力显著提高了JLFET中的压力阻抗灵敏度.
- 在无连接式多通道设备中可调节的灵敏度为压力传感应用提供了优势.
- 这些发现为高度敏感和稳定的纳米压力传感器铺平了道路.
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