解决短通道IGZO TFT中的移动性高估问题,使用Gated Van der Pauw方法
Woo-Seok Lee1,2, Jaeho Lee1,2, Amarja Katware1,2
1Department of Materials Science and Engineering, Inha University, Incheon 22212, Republic of Korea.
ACS applied materials & interfaces
|November 11, 2024
概括
精确测量短通道的氧化 (IGZO) 薄膜晶体管 (TFT) 中的场效应移动性是具有挑战性的,因为接触电阻. 封闭的范德波夫方法精确地提取了板材的阻力,从而能够准确地评估移动性.
科学领域:
- 材料科学 材料科学 材料科学
- 半导体物理 半导体物理
- 设备工程 设备工程
背景情况:
- 氧化 (IGZO) 薄膜晶体管 (TFT) 对于先进的电子产品至关重要.
- 精确的场效移动性测定对于优化IGZO TFT性能至关重要.
- 在IGZO TFT中,短通道长度 (<几微米) 由于显著的接触电阻效应,使移动性评估复杂化.
研究的目的:
- 开发一种精确的方法来提取短通道IGZO TFT中的板电阻.
- 为了克服接触阻力影响移动性测量的挑战.
- 为了能够准确评估内在通道特征和设备性能.
主要方法:
- 采用了封闭的范德波夫 (gVDP) 方法.
- 在gVDP方法允许接触电阻独立的提取板电阻.
- 适用于具有短通道长度的IGZO薄膜晶体管.
主要成果:
- 成功提取了独立于接触电阻的板电阻.
- 缓解了IGZO TFTs对电荷行为和移动性的高估.
- 为短通道设备提供准确的内在通道移动性值.
结论:
- 封闭的范德波夫方法对于在短通道IGZO TFT中精确提取板电阻至关重要.
- 这种方法可以防止不准确的参数高估,确保可靠的设备表征.
- 能够准确预测下一代短通道电子设备的最大性能.
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