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具有异构电介质的InGaAs/GaAsSb异构连接无兴奋剂道FET的性能分析和优化
JunJie Huang1, HongXia Liu1, Shupeng Chen1
1Key Laboratory for Wide Band Gap Semiconductor Materials and Devices of Education, School of Microelectronics, Xidian University, Xi'an 710071, China.
Micromachines
|December 31, 2025
概括
一个新的无兴奋剂道FET使用InGaAs/GaAsSb异质连接和异质介电器,以提高低功耗性能. 这种设计实现了高启动电流和的切换,非常适合先进的电子设备.
科学领域:
- 半导体设备物理 半导体设备物理
- 材料科学 材料科学 材料科学
- 纳米电子学纳米电子学
背景情况:
- 传统的道场效应晶体管 (TFET) 在实现高性能和低功耗方面面临着挑战.
- 无兴奋剂TFET通过简化制造和减少泄漏电流提供了一个有希望的替代方案.
- 优化异质连接和网关结构对于增强TFET特性至关重要.
研究的目的:
- 提出并研究一种具有异质介质的新型InGaAs/GaAsSb异质连接无兴奋道FET (HDL-TFET).
- 为了提高道效率和低功耗应用的现状电流 (ION).
- 为了抑制非状态电流 (IOFF),减少双极行为,并提高射频 (RF) 性能.
主要方法:
- 采用InGaAs/GaAsSb异构连接,具有准断裂间隙能量带结构.
- 使用双电极结构来优化载波分布和道化.
- 引入异质介电结构以减轻状态外泄漏和寄生电容.
主要成果:
- HDL-TFET实现了8.33 × 10-5 A/μm的高ION和0.5V的10.18 mV/dec的的平均下值波动 (SSavg).
- 3.42 × 10-15 A/μm的极低的IOFF导致了令人印象深刻的ION/IOFF比率为2.44 × 1010,两极电流可以忽略不计.
- 观察到射频性能显著改善,包括333μS/μm的峰值传导率 (Gm),64 GHz的峰值切断频率 (fT) 和49 GHz的增强带宽乘积 (GBP).
结论:
- 拟议的HDL-TFET与现有设备相比表现出优越的性能,使其适用于低功耗电子设备.
- 异构介电和双电极结构的整合有效地增强了直流和射频特征.
- 这种先进的TFET设计为下一代高性能,节能电子设备提供了有前途的途径.
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