在短通道IGZO场效应晶体管中构成和通道长度依赖的短暂特征的建模
Donguk Kim1, Dayeon Lee1, Wonjung Kim1
1School of Electrical Engineering, Kookmin University, Seoul 02707, Republic of Korea.
ACS applied materials & interfaces
|January 16, 2025
概括
本研究检查了氧化 (IGZO) 场效应晶体管 (FET) 中的快速过渡性排水电流 (I_D). 具有特定Ga成分的设备G显示了对短通道中超速电流的提高免疫力,提高了可靠性.
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:
- 在氧化 (IGZO) 场效应晶体管 (FET) 中的快速过渡性排水电流 (I_D) 可能导致设备退化.
- 超越电流与电子在快速过渡过程中被困在能量带中有关.
研究的目的:
- 分析基于IGZO的FET中具有不同组成比率的快速过渡性排水电流 (I_D) 的特征.
- 研究侧向电场 (E_lat) 和通道长度 (L) 对超速电流 (ΔI_OS) 的影响.
- 了解Ga成分在减轻短通道对短暂行为影响中的作用.
主要方法:
- 基于IGZO的FET具有不同的In:Ga:Zn比率的实验分析 (设备O:1:1:1,设备G:0.307:0.39:0.303).
- 在变化的侧向电场 (E_lat) 和通道长度 (L) 下测量排水电流 (I_D) 过渡.
- 技术 计算机辅助设计 (TCAD) 模拟以建模影响超标电流的物理参数 (n_OS,E_ver,N_OT).
主要成果:
- 超标排水电流差异 (ΔI_OS) 随着两种设备的侧向电场 (E_lat) 的增加而增加.
- 与设备O相比,设备G的 ΔI_OS 增加与频道长度 (L) 的减少相比较少.
- 装置G在短通道 (L=0.5,1μm) 中显示较小的 ΔI_OS,但在长通道 (L=5,10μm) 中显示较大的 ΔI_OS.
- 装置G中较低的氧气空隙度抑制了兴奋剂扩散,增强了短通道免疫力.
结论:
- 控制IGZO中的Ga组成比率对于改善短通道对快速过渡性排水电流 (I_D) 的影响至关重要.
- 设备G在短通道区域表现出超越电流的优越免疫力,这表明更可靠的IGZO FET操作的潜力.
- 这项研究提供了关于IGZO FETs中暂时行为和短通道效应的物理机制的见解.
相关概念视频
Characteristics of MOSFET
335
Metal-oxide-semiconductor field-effect Transistors, or MOSFETs, play a critical role in electronic circuits. They are primarily utilized for amplifying and switching signals.
Various vital parameters influence their functionality, which is crucial for theory and electronics applications. First, channel dimensions, precisely length, and width, are pivotal. The size of these channels affects the transistor's ability to carry current and switching speeds; shorter channels typically enable...
Various vital parameters influence their functionality, which is crucial for theory and electronics applications. First, channel dimensions, precisely length, and width, are pivotal. The size of these channels affects the transistor's ability to carry current and switching speeds; shorter channels typically enable...
335
Biasing of Metal-Semiconductor Junctions
204
Biasing metal-semiconductor junctions involves applying a voltage across the junction. Specifically, the metal is connected to a voltage source, while the semiconductor is grounded. This technique is essential for controlling the direction and magnitude of current flow in electronic devices, including diodes, transistors, and photovoltaic cells.
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
204
Modeling of Diode Reverse Characteristics
228
In electronic circuits, reverse-biased diode configurations are critical for regulating voltage levels. Zener diodes exploit the reverse breakdown phenomenon and exhibit a controlled breakdown at a specific Zener voltage (VZ). They are designed to maintain a constant voltage across their terminals and are commonly used for voltage regulation in circuits.
When a reverse voltage applied to a Zener diode exceeds its breakdown voltage, the diode enters the breakdown region. At this point, the...
When a reverse voltage applied to a Zener diode exceeds its breakdown voltage, the diode enters the breakdown region. At this point, the...
228
Modeling of Diode Forward Characteristics
471
Understanding the behavior of diodes when forward-biased is a fundamental aspect of electronic circuit design and analysis. This analysis primarily utilizes two models: the exponential diode model and the constant-voltage-drop model. The exponential model comes into play when the source voltage exceeds 0.5 volts, pushing the diode current to rise exponentially above the saturation current. This relationship is graphically depicted in the current-voltage (I-V) curve, illustrating the diode's...
471
MOSFET: Enhancement Mode
281
Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no...
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no...
281
MOSFET: Depletion Mode
313
Depletion-mode MOSFETs represent a unique subset of MOSFET technology, functioning fundamentally differently from their enhancement-mode counterparts. Unlike enhancement MOSFETs, which require a positive gate-source voltage (Vgs) to turn on, depletion-mode MOSFETs are inherently conductive and "normally on" devices.
The primary characteristic of depletion-mode MOSFETs is their ability to conduct current between the drain and source terminals without gate bias. This inherent conductivity...
The primary characteristic of depletion-mode MOSFETs is their ability to conduct current between the drain and source terminals without gate bias. This inherent conductivity...
313


