Manipulation of field-effect transistors by flexoelectric effect

IF 3.6 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-01-13 DOI:10.1063/5.0231603

Yuxin Zuo, Ying Yu, Haoran Wang, Hailong Lu, Yaya Zhang, Chuncheng Zuo, Yong Lv, Yang Yang

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引用次数: 0

Abstract

Flexoelectric field-effect transistors (FE-FETs) hold significant potential for applications in biomedical and healthcare sensing fields. While existing piezoelectric FETs sense physiological signals based on pressure or compressive strain, movements such as bending of the elbow or knee joints are more common in physiological activities than external pressure. To address this, this study innovatively introduces FE-FETs that are regulated through the flexoelectric effect induced by bending. In this study, MoS2 with flexoelectric properties is utilized as the channel region. By bending the FE-FETs, the flexoelectric effect is induced, generating a flexoelectric response voltage that alters the Schottky barrier. The results confirm that varying the bending angle of the FE-FETs effectively modulates their transconductance and carrier mobility. Remarkably, the combination of traditional gate voltage and the flexoelectric effect results in a maximum carrier mobility of 49.63 cm2/V · s within a drain voltage range of 0–1 V, which is approximately 10.6 times higher than the carrier mobility of 4.68 cm2/V·s under traditional gate voltage alone. This study provides an effective approach to regulating FE-FETs and expands the possibilities for their application in wearable technology.

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利用挠性电效应操纵场效应晶体管

柔性电场效应晶体管（fe - fet）在生物医学和医疗传感领域具有巨大的应用潜力。虽然现有的压电场效应管基于压力或压缩应变来感知生理信号，但在生理活动中，肘关节或膝关节的弯曲等运动比外部压力更常见。为了解决这个问题，本研究创新性地引入了通过弯曲引起的挠曲电效应来调节的fe - fet。在本研究中，利用具有柔性电特性的二硫化钼作为沟道区域。通过弯曲fe - fet，可以诱导挠性电效应，产生改变肖特基势垒的挠性电响应电压。结果证实，改变fe - fet的弯曲角度可以有效地调节其跨导性和载流子迁移率。值得注意的是，在漏极电压0-1 V范围内，传统栅极电压和柔性电效应的结合使载流子迁移率达到49.63 cm2/V·s，是传统栅极电压单独作用下载流子迁移率4.68 cm2/V·s的10.6倍。本研究提供了一种有效的方法来调节fe - fet，并扩展了其在可穿戴技术中的应用可能性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.