完全打印的负电容场效应晶体管,具有超低的下值波动和高的逆变器信号增益
Jyoti Ranjan Pradhan1, Subho Dasgupta1
1Department of Materials Engineering, Indian Institute of Science (IISc), C V Raman Avenue, Bangalore 560012, Karnataka, India.
ACS applied materials & interfaces
|July 16, 2024
概括
研究人员使用新型材料开发了完全打印的负电容场效应晶体管 (nc-FET). 这些打印的nc-FET实现了创纪录的低下值斜率,使高效,低功耗的电子产品.
科学领域:
- 材料科学 材料科学 材料科学
- 电子工程 电子工程
- 固态物理 固态物理
背景情况:
- 传统的场效应晶体管 (FET) 由于博尔兹曼屏障而面临限制,阻碍了低功耗电子.
- 铁电/电解电堆中的负电容行为为克服这些限制提供了一条途径.
- 非传统的设备几何形状,如负电容场效应晶体管 (nc-FET),可以达到低于博尔兹曼极限的下值斜率.
研究的目的:
- 用可访问的材料和工艺展示完全打印的nc-FET.
- 为了在打印设备中实现比博尔兹曼极限显著低的下值斜率.
- 为了评估印制的nc-FET在逆变器电路中的信号增益的性能.
主要方法:
- 使用印制无形氧化 (a-IGZO) 半导体,Al2O3介电和PVDF-TrFE铁电层制造nc-FET.
- 印刷的nc-FETs在室温下的下值摆动和操作稳定性的表征.
- 将n型nc-FET集成到单极耗尽负载逆变器中,以测量信号增益.
主要成果:
- 实现了极低的下值斜率,约为2.3mV/十年,超过了博尔兹曼极限.
- 在排水电流的五个数量级上表现出稳定的60 mV/十年以下的性能.
- 带有印刷nc-FET的工程逆变器表现出一个特殊的信号增益2691.1.
结论:
- 完全打印的nc-FET为超低功耗电子提供了可行的途径.
- 使用a-IGZO和PVDF-TrFE等可打印材料,可实现可扩展和经济高效的制造.
- 印刷nc-FET逆变器所证明的高信号增益凸显了它们对先进集成电路的潜力.
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