灵活的高温MoS2场效应晶体管和逻辑门
Yixuan Zou1, Peng Li2, Caizhen Su3
1Department of Precision Instruments, Tsinghua University, Beijing 100084, China.
ACS nano
|March 15, 2024
概括
与六角化 (h-BN) 封装的柔性二硫化 (MoS2) 场效应晶体管 (FET) 显示出高温耐受性,最高可达550°C. 石墨烯电极进一步提高性能,使灵活的集成电路适用于恶劣的环境.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 电子工程 电子工程
背景情况:
- 高温电子对于航空航天和其他苛刻的应用至关重要.
- 传统的碳化 (SiC) 晶体管在灵活性和功耗方面面临限制.
- 二维 (2D) 二硫化物 (MoS) 提供灵活性和低功率,但在200°C以上降解.
研究的目的:
- 开发使用2D MoS2的耐高温柔性晶体管.
- 在高温下研究MoS设备的电气性能和工作机制.
- 为了证明在恶劣环境中运行的灵活集成电路的可行性.
主要方法:
- 制造具有上/下六角化 (h-BN) 封装的MoS2场效应晶体管 (FET).
- 集成石墨烯电极以提高设备性能.
- 在高达550°C的空气温度下测试设备的稳定性和电气特性.
- 实现一个灵活的补充金属氧化物半导体 (CMOS) NOT 门.
主要成果:
- 封装的h-BN/h-BN MoS2 FETs在温度≥500°C时表现出稳定性,明显超过了之前的报道.
- 与金属电极相比,带有石墨烯电极的MoS2FET显示出优越的高温性能,包括更大的开/关比和较小的下值摆动和值电压转移.
- 由于热排放载体,在高温下观察到开/关比和下值波动的剧烈变化.
- 一个功能灵活的CMOS NOT门能够在550°C时进行逻辑计算的成功演示.
结论:
- 六角化封装使MoS2晶体管能够在显著更高的温度下工作.
- 石墨烯电极在高温环境中为MoS2FET提供了卓越的性能.
- 这项技术为下一代灵活的集成电路铺平了道路,这些集成电路可以抵抗恶劣的条件.
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