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説明:

Tunnel field-effect transistor (TFET) is emerging as a promising alternative to overcome the thermionic limit of 60 mV/dec in subthreshold swing (SS) inherent to Metal-Oxide-Semiconductor Field- Effect Transistor (MOSFET) through the band-to-band tunneling (BTBT) mechanism. TFET offers significant potential for applications in future industries, such as low-power sensors and wearable devices, where extreme energy efficiency is critical. Notably, due to the characteristic of the BTBT mechanism, TFET can maintain stable SS performance even at high temperature, enabling low-power operation under such condition. Although numerous theoretical predictions and simulations support this capability, experimental validation has not yet to be demonstrated. As electric and autonomous vehicles advance, the demand for automotive semiconductors has increased, highlighting the importance of transistor technology that remains stable at high temperatures and consumes less power. Here, we report high temperature TFETs showing SS < 60 mV/dec through vertical heterojunction of 2D semiconductors. n-TFET and p-TFET were successfully implemented via BP-MoS2 and WSe2-ReS2 heterojunction, respectively. Both TFETs reached SSmin under 50 mV/dec at room temperature and maintained SS1dec_avg under 60 mV/dec up to 400 K. These findings pave the way for low-power circuits capable of operation in harsh environments.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: Dirac semimetal
, Cd3As2
, molecular beam epitaxy (MBE)


刊行年月日: 2025-04-21

出版者: IOP Publishing

掲載誌:

• Nanotechnology (ISSN: 09574484) vol. 36 issue. 16 165001

研究助成金:

• Chung Yuan Christian University
• Ministry of Science and Technology
• KAKENHI 19H05790
• JSPS
• Chiba University
• Higher Education Sprout Project
• National Science and Technology Council (NSTC), Taiwan NSTC 110-2112-M-033-009-MY3

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1088/1361-6528/adbb74

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更新時刻: 2026-02-17 08:30:37 +0900

MDRでの公開時刻: 2026-02-16 18:00:53 +0900