顶门式P-MOSFET与CVD培养的WSe2道通过自行对齐的WO转换用于间隔器兴奋剂
Meng-Zhan Li1,2, Terry Y T Hung2, Wei-Sheng Yun2
1Department of Physics, National Taiwan University, Taipei 10617, Taiwan.
Nano letters
|April 15, 2025
概括
氧化 (WO) 的转换有效地使得 tungsten diselenide (WSe2) 场效应晶体管 (FET) 变得无效. 这种方法提高了由CVD培养的薄膜制成的设备的电流和移动性,适用于未来的逻辑电路.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 半导体设备物理 半导体设备物理
背景情况:
- Tungsten Diselenide (WSe2) 场效应晶体管 (FET) 对于下一代电子产品至关重要.
- 以前的兴奋剂策略通常依赖于去皮的WSe2片,限制了可扩展性.
- 了解CVD培养的WSe2中对通道移动性和接触电阻的兴奋剂影响至关重要.
研究的目的:
- 研究氧化物 (WO) 转化作为CVD培养的WSe2薄膜的兴奋剂方法.
- 评估WO转化兴奋剂对设备性能的影响,包括移动性和抵抗力.
- 为了证明WO转换在各种低维的FET中调整值电压的一般适用性.
主要方法:
- 使用化学蒸汽沉积 (CVD) 来生长WSe2膜.
- 应用WO转换用于兴奋剂WSe2设备.
- 使用技术计算机辅助设计 (TCAD) 模拟来建模兴奋剂机制.
主要成果:
- 三层WSe2设备在WO转换后实现了65cm2/V·s的中位方场效应移动性.
- 使用自行调整的WO转换证明了顶级的p型金属氧化物半导体场效应晶体管 (p-MOSFETs).
- 在WSe2 p-MOSFET中,在当前电流中实现了250倍的增强,在WSe2 p-MOSFET中,下值波动为80 mV/dec.
结论:
- WO转换是CVD培养的WSe2的有效兴奋剂技术,提高了设备的性能.
- 该方法允许在n型和p型FET中精确调节值电压.
- 这种方法为开发未来使用低维材料的逻辑设备提供了可行的途径.
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