在2D FeFET中通过极化调节的载体分布的纳米尺度映射
Shengyao Su1,2, Yingli Zhang1,2, Fengyuan Zhang1,2
1Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, Guangdong, China.
Nano letters
|November 15, 2024
概括
这项研究揭示了使用先进显微镜在二维铁电场效应晶体管 (2D FeFET) 中的载体再分配. 它增强了对铁电半导体相互作用的理解,以提高设备性能.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 纳米技术纳米技术
背景情况:
- 二维铁电和铁电半导体扩大了2DFeFET在内存和神经形态计算中的应用.
- 了解铁电半导体相互作用和纳米级载体动态是至关重要的,但缺乏.
研究的目的:
- 为了研究二维FeFET中的铁电半导体异质连接的微观行为.
- 开发和应用与载体和极化动态相关的特征化方法.
主要方法:
- 在现场扫描微波阻抗显微镜 (sMIM).
- 在现场压响应力显微镜 (PFM).
- 使用了基于Pb(Zr0.2Ti0.8) O3/MoS2的2D FeFET设备.
主要成果:
- 在2D FeFET中微观载体再分配的高分辨率可视化.
- 详细了解纳米级铁电极化和半导体载体之间的相互作用.
结论:
- 这项研究揭示了铁电半导体异质连接的微观行为.
- 为了解二维FeFET中的铁电门效应和保留问题提供了基础.
相关概念视频
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The generation of electrical current in semiconductors is fundamentally driven by two mechanisms: drift and diffusion. These processes are essential for the functionality and performance of semiconductor-based devices.
Drift Current:
The drift of charge carriers is started by an external electric field (E). Charged particles, such as electrons and holes, experience an acceleration between collisions with lattice atoms. For electrons, this results in a drift velocity (vd) given by:
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