使用BCl3等离子体衍生基的三维表面处理MoS2使用BCl3
Heesoo Lee1, Hoijoon Kim1, Kihyun Kim1
1School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea.
ACS applied materials & interfaces
|September 20, 2023
概括
这项研究引入了用于二硫化 (MoS2) 表面的新型BCl3等离子处理,使高级场效应晶体管 (FET) 的高k介电物的均原子层沉积成为可能. 该方法确保损坏最小,对于下一代电子产品至关重要.
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:
- 下一代门式全方位场效应晶体管 (FET) 需要在二维过渡金属二甲基化物 (TMDC) 半导体上使用均的高k介电薄膜.
- 现有的表面处理方法往往会造成损坏或不适合三维 (3D) 结构,阻碍了在惰性TMDC表面上均的原子层沉积 (ALD).
- 二硫化物 (MoS2) 是一个有前途的TMDC材料,用于先进的FET通道.
研究的目的:
- 为MoS2.2开发一种3D兼容,无损的表面处理方法.
- 在功能化MoS2表面上实现超薄高k介电薄膜的均ALD.
- 为了证明预处理在制造功能性FET设备时的有效性.
主要方法:
- 使用BCl3等离子体衍生基处理对MoS2表面的功能化.
- 一个超薄的Al2O3薄膜的原子层沉积 (ALD) 在经过处理的MoS2.3上.
- 微结构分析 (例如TEM),光谱学 (OES,XPS) 和设备电气测量 (FET).
主要成果:
- 在平面MoS2表面上实现了~2nmAl2O3膜的完整覆盖.
- 在使用悬浮的MoS2通道对3D结构的证明适用性.
- 通过拉曼,PL和电气测量确认了MoS2的微不足道损伤.
- 成功制造并运行了一种顶级的FET,具有5nm的Al2O3介电.
结论:
- 血衍生的BCl3激素有效地功能化了MoS2表面,以实现均的ALD核化.
- 开发的激进处理是一种无损的方法,适用于2D和3DTMDC结构.
- 这种预处理对于使用TMDC通道和ALD高k介电材料实现高性能FET至关重要.
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