一个全面的大信号,小信号和噪声模型用于IGZO薄膜晶体管电路
Ritwik Vatsyayan1, Shadi A Dayeh1
1Integrated Electronics and Biointerfaces Laboratory, Department of Electrical and Computer Engineering, University of California San Diego, La Jolla, CA 92092 USA.
概括
一个新的基于物理的模型,用于无形印氧化 (a-IGZO) 薄膜晶体管 (TFT) 准确地捕获所有操作模式的设备特征. 这种验证的模型对于设计高精度生物传感电路至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 电气工程 电气工程
- 半导体物理 半导体物理
背景情况:
- 无形印氧化 (a-IGZO) 薄膜晶体管 (TFT) 是现代电子产品中的关键组件.
- 准确的设备建模对于高性能电子电路的设计至关重要,特别是在生物传感等敏感应用中.
研究的目的:
- 为双门a-IGZO TFTs开发和验证一种新的基于物理的模型.
- 准确地捕捉所有操作模式的TFT特性,包括下值电流和接触电阻.
- 为了证明模型在设计和模拟生物传感应用的高精度电路中的实用性.
主要方法:
- 具有不同尺寸的a-IGZO TFTs的制造和表征.
- 基于物理学的模型的开发,包括经验数据的调整.
- 作为偏差,通道面积和温度的函数的接触电阻的建模.
- 模型的验证使用DC,小信号和噪声特征.
- 模拟和制造一个双阶段的通用源放大器电路.
主要成果:
- 开发的模型准确地捕捉了a-IGZO TFT的特征,包括双极子值电流,分级间偏移电流变化和值电压.
- 接触电阻被有效地建模为偏差,通道面积和温度的函数.
- 模拟和测量两级放大器的性能在10kHz-10MHz频率范围内显示出极好的一致性.
- 该模型成功预测了直流,小信号和噪声参数.
结论:
- 针对双门a-IGZO TFTs的强大的基于物理的模型已成功开发并经过实验验证.
- 该模型在所有操作模式中的准确性及其预测电路性能的能力使其适合设计高精度生物传感应用.
- 这项工作为研究人员和工程师使用a-IGZO TFT技术提供了宝贵的工具.
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