范德瓦尔斯介电剂用于在二维场效应晶体管中的值工程
Dipanjan Sen1, Harikrishnan Ravichandran1, Safdar Imam2
1Engineering Science and Mechanics, Penn State University, University Park, PA, USA.
Nature communications
|February 16, 2026
概括
本研究介绍了用于2D场效应晶体管 (FET) 中可编程值电压 (Vt) 调节的双金属硫酸. 这一创新在2D CMOS逻辑中显著降低了功耗,从而实现了高效的功率封锁.
科学领域:
- 材料科学 材料科学 材料科学
- 半导体物理 半导体物理
- 纳米技术纳米技术
背景情况:
- 二维 (2D) 半导体是下一代场效应晶体管 (FET) 的关键.
- 当前的2D FET集成到互补金属氧化物半导体 (CMOS) 逻辑中面临着由于不适当的门电压 (Vt) 的挑战,导致高功耗.
- 现有的研究专注于门电静电学和下值摆动 (SS),忽视了系统的Vt工程.
研究的目的:
- 为了研究2D FET中值电压 (Vt) 调节的高κ范德瓦尔斯 (vdW) 介电材料.
- 探索用于可编程和不可挥发的Vt调的双金属硫酸盐.
- 实现高效的2D CMOS逻辑,降低功耗.
主要方法:
- 研究的高-κ vdW电介质是:金属氧化物 (LaOBr,BiOBr,BiOCl) 和双金属硫酸 (LiInP2S6 (LIPS),LiInP2Se6 (LIPSe),CuInP2S6 (CIPS)) 等.
- 在使用双金属酸盐的n型单层MoS2和p型双层WSe2FET中展示了可编程和不可挥发的Vt调整.
- 实现了2D CMOS逆变器的离子介导Vt调整,并将实验结果与SPICE建模结合起来.
主要成果:
- 双金属硫酸盐使n型MoS2和p型WSe2FET中的可编程和不可挥发的Vt调整成为可能.
- 在保持高开关速度的同时,为2D CMOS 逆变器实现了近三次大小的静态功率减少.
- 确定了一个最佳的Vt窗口,可以在微不足道的延迟下最大限度地减少功率,从而实现内置的功率门.
结论:
- 双金属硫酸盐为2D FETs的有效Vt工程提供了一种新方法.
- 使用这些材料的离子介导Vt调整在2D CMOS逻辑中显著提高了功率效率.
- 这些发现为在未来没有额外休眠晶体管的电子设备中改进功率性能区域指标铺平了道路.
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