在MoSe2/WSe2异构结构中,Moiré工程诱导的热和电传输的反动控制
Haidong Wang1, Yaohong Zhou1, Siqi Xie1
1Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China.
ACS applied materials & interfaces
|October 4, 2025
概括
在MoSe2/WSe2异构中,Moiré工程允许独立控制电气和热传输. 不同的扭转角度调整整正比,使新的原子尺度设备成为可能.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
背景情况:
- 莫伊尔工程提供控制电子运输在2D半导体.
- 在双层中调整界面导热率是通过层间距离可能的.
- 在moiré异构结构中同时控制电气和热传输是具有挑战性的.
研究的目的:
- 研究莫雷工程异构结构中电气和热传输的差异化调节.
- 阐明不同电气和热校正反应的潜在机制.
主要方法:
- 在MoSe2/WSe2异构中同时测量电导和热导.
- 系统地改变扭转角度以控制莫雷超级网格周期.
- 作为扭曲角度的函数的整正比率的分析.
主要成果:
- 随着扭转角度从0°增加到30°,热校正比率从65%降至30%.
- 随着扭转角度的增加,电气纠正比率从100%增加到200% .
- 在30°的扭转角度下,热校正最小化,而电力校正则从正向负逆转.
结论:
- 莫伊尔超直线诱导了声子和电子的明显整正反应.
- 减少moiré周期增强了状态不对称的电子密度,但由于层间合,抑制了热不对称.
- 结果提供了对莫雷控制效应的洞察力,并为原子尺度整形装置提供了基础.
相关概念视频
MOSFET: Enhancement Mode
785
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...
785
MOSFET
1.2K
The Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) plays a pivotal role in modern electronics thanks to its versatility and efficiency in controlling electrical currents. This device, also known as IGFET, MISFET, and MOSFET, has three main terminals: the Source, Drain, and Gate. MOSFETs are classified into n-channel or p-channel types based on the doping characteristics of their substrate and the source or drain regions.
In an n-MOSFET, the structure includes n-type source and drain...
In an n-MOSFET, the structure includes n-type source and drain...
1.2K
MOSFET: Depletion Mode
820
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...
820
Biasing of Metal-Semiconductor Junctions
554
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...
554
Characteristics of MOSFET
936
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...
936
Metal-Semiconductor Junctions
903
The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...
903


